Patent
US 9,337,481Electrode (anode and cathode) performance enhancement by composite formation with graphene oxide
Reinhard NESPER
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,337,481Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Figure 3: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.6.257.702.2110.749.svg 0.157 6.177 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.7.360.801.2022.842.svg 0.137 5.54 Drawing Black and white
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 5: Differential capacity plot from gal- vanostatic measurements at different cycles, taken at 50 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.14.356.1396.852.1437.svg 0.137 1.653 Drawing Black and white
Figure 6: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.16.236.1565.2140.1611.svg 0.153 6.347 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.17.360.1663.2082.1704.svg 0.137 5.74 Drawing Black and white
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 8: Discharge curve of the active electrode material prepared according to Example 2a at 200 A/kg.
Figure 9: Galvanostatic measurement of the active electrode material prepared according to Example 2a at 25 200A/kg.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 12: Galvanostatic measurement of the ac- tive electrode material prepared according to Example 2b at 200 A/kg.
Figure 13: Differential capacity plot of the ac- 5 ti v e electrode material prepared according to Example 2b from galvanostatic measurement at the 7th cycle, taken at SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.8.360.873.972.914.svg 0.137 2.04 Graph Black and white
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
Figure 15: Natural stabilization observed within SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.13.358.1290.1322.1339.svg 0.163 3.213 Graph Black and white
Figure 16: Natural shift of the 2V oxidation peak SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.15.357.1460.2108.1509.svg 0.163 5.837 Graph Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.16.236.1556.795.1598.svg 0.14 1.863 Graph Black and white
Figure 17: Artificial shift of the 2V oxidation peak with a 2 s teps charging (200 A/kg). Modes for Carrying Out the Invention 20 Several promising EAM for cathodes and anodes ex- ist. However, many of them have to be used in form of nano- particles due to low conductivity. One of the most promising …
Figure 1). SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136228.6.257.702.2053.744.svg 0.14 5.987 Chemistry Black and white yields are shown corresponding to the potentials with regard to metallic Li and Table 1 shows the corresponding lattice constants that in particular show significant changes …
Figure 11, a galvanostatic measurement in SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136234.29.357.2735.2160.2784.svg 0.163 6.01 Drawing Black and white 30
Figure 10 B). It was possible to suppress artificially the de- intercalation at 2V by programming a cyclovoltammetric (CV) step at the beginning of the discharge. The idea was to quickly polarize the electrode close to 2.7V and then pro- 15 ceed with the galvanostatic charge at a chosen current. A …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrode, for a rechargeable lithium battery, comprising and preferably consisting of electronically ac- SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.6.257.700.2050.742.svg 0.14 5.977 Drawing Black and white characterized in that, prior to the first charging or dis- charging, the EAM is Li XH₂-xV308, wherein at least 1 of the 3 V-atoms in the formula unit has the oxidation state 4+ and wherein x ranges from 0.1 to 1.5.
The electrode of claim 1 characterized in that said matrix consists of a pyrolization product with therein in- corporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.15.236.1450.2114.1492.svg 0.14 6.26 Graph Black and white of the matrix in the electrode is at most 10 % by weight, referred to the weight of the active electrode and/or the amorphous carbonaceous material to graphene ratio is from 2: 1 to 1 1.
A rechargeable battery comprising a cathode and/or an anode of claim 1.
A method for producing a battery wherein an elec- trode of claim 1 is placed in a cell and covered with at 35 least one separator, the cell is filled with electrolyte, the cell is completed with a lithium anode and tightly closed. 34
A method for improving the battery of claim 1, wherein the battery is stored under conditions corresponding to 3 to 4 days at 30 0C.
A method for charging a battery of claim 1, wherein a fast cyclovoltammetric step is performed between 1.6V and 2.8 V and a galvanostatic step between 2.8V and 4.1 V. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.9.236.1055.2148.1097.svg 0.14 6.373 Chemistry Black and white to 1.5.
The electrode of claim 1, wherein x is close to 1. 15
The electrode of claim 3, wherein the weight ratio of the matrix in the electrode is 5 ± 2 % by weight referred to the weight of the active electrode. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.20.231.2180.2029.2222.svg 0.14 5.993 Chemistry Black and white carbonaceous material to graphene ratio is about 3 2.
Layer stacks claimed or described, ordered top of device to substrate.
electrode for rechargeable lithium battery
rechargeable lithium battery
Materials described outside the worked examples.
LixH₂-xV₃O₈
electronically active material (EAM) in nanoparticulate form
pyrolization product (amorphous carbonaceous matrix)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 1.6–2.8 V | — |
Voltage |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,337,481Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Figure 3: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.6.257.702.2110.749.svg 0.157 6.177 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.7.360.801.2022.842.svg 0.137 5.54 Drawing Black and white
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 5: Differential capacity plot from gal- vanostatic measurements at different cycles, taken at 50 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.14.356.1396.852.1437.svg 0.137 1.653 Drawing Black and white
Figure 6: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.16.236.1565.2140.1611.svg 0.153 6.347 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.17.360.1663.2082.1704.svg 0.137 5.74 Drawing Black and white
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 8: Discharge curve of the active electrode material prepared according to Example 2a at 200 A/kg.
Figure 9: Galvanostatic measurement of the active electrode material prepared according to Example 2a at 25 200A/kg.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 12: Galvanostatic measurement of the ac- tive electrode material prepared according to Example 2b at 200 A/kg.
Figure 13: Differential capacity plot of the ac- 5 ti v e electrode material prepared according to Example 2b from galvanostatic measurement at the 7th cycle, taken at SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.8.360.873.972.914.svg 0.137 2.04 Graph Black and white
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
Figure 15: Natural stabilization observed within SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.13.358.1290.1322.1339.svg 0.163 3.213 Graph Black and white
Figure 16: Natural shift of the 2V oxidation peak SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.15.357.1460.2108.1509.svg 0.163 5.837 Graph Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.16.236.1556.795.1598.svg 0.14 1.863 Graph Black and white
Figure 17: Artificial shift of the 2V oxidation peak with a 2 s teps charging (200 A/kg). Modes for Carrying Out the Invention 20 Several promising EAM for cathodes and anodes ex- ist. However, many of them have to be used in form of nano- particles due to low conductivity. One of the most promising …
Figure 1). SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136228.6.257.702.2053.744.svg 0.14 5.987 Chemistry Black and white yields are shown corresponding to the potentials with regard to metallic Li and Table 1 shows the corresponding lattice constants that in particular show significant changes …
Figure 11, a galvanostatic measurement in SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136234.29.357.2735.2160.2784.svg 0.163 6.01 Drawing Black and white 30
Figure 10 B). It was possible to suppress artificially the de- intercalation at 2V by programming a cyclovoltammetric (CV) step at the beginning of the discharge. The idea was to quickly polarize the electrode close to 2.7V and then pro- 15 ceed with the galvanostatic charge at a chosen current. A …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrode, for a rechargeable lithium battery, comprising and preferably consisting of electronically ac- SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.6.257.700.2050.742.svg 0.14 5.977 Drawing Black and white characterized in that, prior to the first charging or dis- charging, the EAM is Li XH₂-xV308, wherein at least 1 of the 3 V-atoms in the formula unit has the oxidation state 4+ and wherein x ranges from 0.1 to 1.5.
The electrode of claim 1 characterized in that said matrix consists of a pyrolization product with therein in- corporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.15.236.1450.2114.1492.svg 0.14 6.26 Graph Black and white of the matrix in the electrode is at most 10 % by weight, referred to the weight of the active electrode and/or the amorphous carbonaceous material to graphene ratio is from 2: 1 to 1 1.
A rechargeable battery comprising a cathode and/or an anode of claim 1.
A method for producing a battery wherein an elec- trode of claim 1 is placed in a cell and covered with at 35 least one separator, the cell is filled with electrolyte, the cell is completed with a lithium anode and tightly closed. 34
A method for improving the battery of claim 1, wherein the battery is stored under conditions corresponding to 3 to 4 days at 30 0C.
A method for charging a battery of claim 1, wherein a fast cyclovoltammetric step is performed between 1.6V and 2.8 V and a galvanostatic step between 2.8V and 4.1 V. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.9.236.1055.2148.1097.svg 0.14 6.373 Chemistry Black and white to 1.5.
The electrode of claim 1, wherein x is close to 1. 15
The electrode of claim 3, wherein the weight ratio of the matrix in the electrode is 5 ± 2 % by weight referred to the weight of the active electrode. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.20.231.2180.2029.2222.svg 0.14 5.993 Chemistry Black and white carbonaceous material to graphene ratio is about 3 2.
Layer stacks claimed or described, ordered top of device to substrate.
electrode for rechargeable lithium battery
rechargeable lithium battery
Materials described outside the worked examples.
LixH₂-xV₃O₈
electronically active material (EAM) in nanoparticulate form
pyrolization product (amorphous carbonaceous matrix)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 1.6–2.8 V | — |
Voltage |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,337,481Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Figure 3: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.6.257.702.2110.749.svg 0.157 6.177 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.7.360.801.2022.842.svg 0.137 5.54 Drawing Black and white
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 5: Differential capacity plot from gal- vanostatic measurements at different cycles, taken at 50 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.14.356.1396.852.1437.svg 0.137 1.653 Drawing Black and white
Figure 6: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.16.236.1565.2140.1611.svg 0.153 6.347 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.17.360.1663.2082.1704.svg 0.137 5.74 Drawing Black and white
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 8: Discharge curve of the active electrode material prepared according to Example 2a at 200 A/kg.
Figure 9: Galvanostatic measurement of the active electrode material prepared according to Example 2a at 25 200A/kg.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 12: Galvanostatic measurement of the ac- tive electrode material prepared according to Example 2b at 200 A/kg.
Figure 13: Differential capacity plot of the ac- 5 ti v e electrode material prepared according to Example 2b from galvanostatic measurement at the 7th cycle, taken at SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.8.360.873.972.914.svg 0.137 2.04 Graph Black and white
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
Figure 15: Natural stabilization observed within SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.13.358.1290.1322.1339.svg 0.163 3.213 Graph Black and white
Figure 16: Natural shift of the 2V oxidation peak SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.15.357.1460.2108.1509.svg 0.163 5.837 Graph Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.16.236.1556.795.1598.svg 0.14 1.863 Graph Black and white
Figure 17: Artificial shift of the 2V oxidation peak with a 2 s teps charging (200 A/kg). Modes for Carrying Out the Invention 20 Several promising EAM for cathodes and anodes ex- ist. However, many of them have to be used in form of nano- particles due to low conductivity. One of the most promising …
Figure 1). SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136228.6.257.702.2053.744.svg 0.14 5.987 Chemistry Black and white yields are shown corresponding to the potentials with regard to metallic Li and Table 1 shows the corresponding lattice constants that in particular show significant changes …
Figure 11, a galvanostatic measurement in SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136234.29.357.2735.2160.2784.svg 0.163 6.01 Drawing Black and white 30
Figure 10 B). It was possible to suppress artificially the de- intercalation at 2V by programming a cyclovoltammetric (CV) step at the beginning of the discharge. The idea was to quickly polarize the electrode close to 2.7V and then pro- 15 ceed with the galvanostatic charge at a chosen current. A …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrode, for a rechargeable lithium battery, comprising and preferably consisting of electronically ac- SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.6.257.700.2050.742.svg 0.14 5.977 Drawing Black and white characterized in that, prior to the first charging or dis- charging, the EAM is Li XH₂-xV308, wherein at least 1 of the 3 V-atoms in the formula unit has the oxidation state 4+ and wherein x ranges from 0.1 to 1.5.
The electrode of claim 1 characterized in that said matrix consists of a pyrolization product with therein in- corporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.15.236.1450.2114.1492.svg 0.14 6.26 Graph Black and white of the matrix in the electrode is at most 10 % by weight, referred to the weight of the active electrode and/or the amorphous carbonaceous material to graphene ratio is from 2: 1 to 1 1.
A rechargeable battery comprising a cathode and/or an anode of claim 1.
A method for producing a battery wherein an elec- trode of claim 1 is placed in a cell and covered with at 35 least one separator, the cell is filled with electrolyte, the cell is completed with a lithium anode and tightly closed. 34
A method for improving the battery of claim 1, wherein the battery is stored under conditions corresponding to 3 to 4 days at 30 0C.
A method for charging a battery of claim 1, wherein a fast cyclovoltammetric step is performed between 1.6V and 2.8 V and a galvanostatic step between 2.8V and 4.1 V. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.9.236.1055.2148.1097.svg 0.14 6.373 Chemistry Black and white to 1.5.
The electrode of claim 1, wherein x is close to 1. 15
The electrode of claim 3, wherein the weight ratio of the matrix in the electrode is 5 ± 2 % by weight referred to the weight of the active electrode. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.20.231.2180.2029.2222.svg 0.14 5.993 Chemistry Black and white carbonaceous material to graphene ratio is about 3 2.
Layer stacks claimed or described, ordered top of device to substrate.
electrode for rechargeable lithium battery
rechargeable lithium battery
Materials described outside the worked examples.
LixH₂-xV₃O₈
electronically active material (EAM) in nanoparticulate form
pyrolization product (amorphous carbonaceous matrix)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 1.6–2.8 V | — |
Voltage |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,337,481Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Figure 3: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.6.257.702.2110.749.svg 0.157 6.177 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.7.360.801.2022.842.svg 0.137 5.54 Drawing Black and white
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 5: Differential capacity plot from gal- vanostatic measurements at different cycles, taken at 50 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.14.356.1396.852.1437.svg 0.137 1.653 Drawing Black and white
Figure 6: Comparison of galvanostatic measure- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.16.236.1565.2140.1611.svg 0.153 6.347 Drawing Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.17.360.1663.2082.1704.svg 0.137 5.74 Drawing Black and white
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 8: Discharge curve of the active electrode material prepared according to Example 2a at 200 A/kg.
Figure 9: Galvanostatic measurement of the active electrode material prepared according to Example 2a at 25 200A/kg.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 12: Galvanostatic measurement of the ac- tive electrode material prepared according to Example 2b at 200 A/kg.
Figure 13: Differential capacity plot of the ac- 5 ti v e electrode material prepared according to Example 2b from galvanostatic measurement at the 7th cycle, taken at SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.8.360.873.972.914.svg 0.137 2.04 Graph Black and white
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
Figure 15: Natural stabilization observed within SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.13.358.1290.1322.1339.svg 0.163 3.213 Graph Black and white
Figure 16: Natural shift of the 2V oxidation peak SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.15.357.1460.2108.1509.svg 0.163 5.837 Graph Black and white SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136227.16.236.1556.795.1598.svg 0.14 1.863 Graph Black and white
Figure 17: Artificial shift of the 2V oxidation peak with a 2 s teps charging (200 A/kg). Modes for Carrying Out the Invention 20 Several promising EAM for cathodes and anodes ex- ist. However, many of them have to be used in form of nano- particles due to low conductivity. One of the most promising …
Figure 1). SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136228.6.257.702.2053.744.svg 0.14 5.987 Chemistry Black and white yields are shown corresponding to the potentials with regard to metallic Li and Table 1 shows the corresponding lattice constants that in particular show significant changes …
Figure 11, a galvanostatic measurement in SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136234.29.357.2735.2160.2784.svg 0.163 6.01 Drawing Black and white 30
Figure 10 B). It was possible to suppress artificially the de- intercalation at 2V by programming a cyclovoltammetric (CV) step at the beginning of the discharge. The idea was to quickly polarize the electrode close to 2.7V and then pro- 15 ceed with the galvanostatic charge at a chosen current. A …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrode, for a rechargeable lithium battery, comprising and preferably consisting of electronically ac- SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.6.257.700.2050.742.svg 0.14 5.977 Drawing Black and white characterized in that, prior to the first charging or dis- charging, the EAM is Li XH₂-xV308, wherein at least 1 of the 3 V-atoms in the formula unit has the oxidation state 4+ and wherein x ranges from 0.1 to 1.5.
The electrode of claim 1 characterized in that said matrix consists of a pyrolization product with therein in- corporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136242.15.236.1450.2114.1492.svg 0.14 6.26 Graph Black and white of the matrix in the electrode is at most 10 % by weight, referred to the weight of the active electrode and/or the amorphous carbonaceous material to graphene ratio is from 2: 1 to 1 1.
A rechargeable battery comprising a cathode and/or an anode of claim 1.
A method for producing a battery wherein an elec- trode of claim 1 is placed in a cell and covered with at 35 least one separator, the cell is filled with electrolyte, the cell is completed with a lithium anode and tightly closed. 34
A method for improving the battery of claim 1, wherein the battery is stored under conditions corresponding to 3 to 4 days at 30 0C.
A method for charging a battery of claim 1, wherein a fast cyclovoltammetric step is performed between 1.6V and 2.8 V and a galvanostatic step between 2.8V and 4.1 V. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.9.236.1055.2148.1097.svg 0.14 6.373 Chemistry Black and white to 1.5.
The electrode of claim 1, wherein x is close to 1. 15
The electrode of claim 3, wherein the weight ratio of the matrix in the electrode is 5 ± 2 % by weight referred to the weight of the active electrode. SVG 14154275.01-14-2014.HQFCJYZLPXXIFW3.CLM11136243.20.231.2180.2029.2222.svg 0.14 5.993 Chemistry Black and white carbonaceous material to graphene ratio is about 3 2.
Layer stacks claimed or described, ordered top of device to substrate.
electrode for rechargeable lithium battery
rechargeable lithium battery
Materials described outside the worked examples.
LixH₂-xV₃O₈
electronically active material (EAM) in nanoparticulate form
pyrolization product (amorphous carbonaceous matrix)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 2: The XRD powder data of vanadate samples electrochemically treated with 5 g alvanostatic cycles (20 SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.4.356.534.2112.575.svg 0.137 5.853 Drawing Black and white
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 1.6–2.8 V | — |
Voltage |
Related documents with shared materials, methods, properties, or citations.
graphene flakes
electrolyte comprising carbonate with ethyl methyl carbonate and/or dimethylcarbonate
ionic lithium source
graphene oxide (GO)
H₂V₃O₈
lithium hydroxide
LiOH
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
| — |
Voltage | 2–2.5 V | — |
graphene flakes
electrolyte comprising carbonate with ethyl methyl carbonate and/or dimethylcarbonate
ionic lithium source
graphene oxide (GO)
H₂V₃O₈
lithium hydroxide
LiOH
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
| — |
Voltage | 2–2.5 V | — |
graphene flakes
electrolyte comprising carbonate with ethyl methyl carbonate and/or dimethylcarbonate
ionic lithium source
graphene oxide (GO)
H₂V₃O₈
lithium hydroxide
LiOH
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
| — |
Voltage | 2–2.5 V | — |
graphene flakes
electrolyte comprising carbonate with ethyl methyl carbonate and/or dimethylcarbonate
ionic lithium source
graphene oxide (GO)
H₂V₃O₈
lithium hydroxide
LiOH
Figure 4: Comparison of XRD data of samples re- sulting by a different number of galvanostatic cycles treat- SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.10.356.1056.2059.1097.svg 0.137 5.677 Drawing Black and white 10 end delithiated.
Figure 7: SEM microphotograph of an active elec- trode material prepared according to Example 2a, showing the microparticulate EAM, the pyrolized matrix and the therein 20 incorporated graphene flakes.
Figure 10: SEM microphotograph of an active elec- trode material prepared according to Example 2b, showing the microparticulate EAM, the pyrolized matrix and the therein incorporated graphene flakes. SVG 14154275.01-14-2014.HQFCJYZ₇PXXIFW3.SPEC11136226.31.232.2851.2084.2893.svg 0.14 6.173 Graph …
Figure 14: The XRD powder data of the active electrode material prepared according to Example 2b before 10 galvanostatic measurement.
| — |
Voltage | 2–2.5 V | — |