HIGHLY DISPERSIBLE GRAPHENE COMPOSITION, PREPARATION METHOD THEREOF, AND ELECTRODE FOR LITHIUM ION SECONDARY BATTERY CONTAINING HIGHLY DISPERSIBLE GRAPHENE COMPOSITION

Peiyu Sun

Patent

Atlas literature

Patent

US 9,812,712

HIGHLY DISPERSIBLE GRAPHENE COMPOSITION, PREPARATION METHOD THEREOF, AND ELECTRODE FOR LITHIUM ION SECONDARY BATTERY CONTAINING HIGHLY DISPERSIBLE GRAPHENE COMPOSITION

Peiyu Sun

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

3 independent · 3 dependent

1
IndependentgrapheneCH₄N₂SS
A graphene composition containing graphene, thiourea and elemental sulfur, the element rat i o of sulfur to carbon measured in X-ray photoelectron spectroscopy measurement being 0.04 or more and 0.12 or less and the elemental sulfur content in the graphene composition is 0.01 or more and 0.1 or less relative to the carbon component, wherein the thiourea is adsorbed on the surface of the graphene. Currently amended
1. 2
  Dependent← claim 1grapheneCH₄N₂SSelectrode active materialbinderelectrode for lithium ion battery
  An electrode for a lithium ion battery, comprising the graphene composition according to claim 1, an electrode active material and a binder. Original
2. 3
  Dependent← claim 1grapheneCH₄N₂SSgraphite oxide
  A method for producing the graphene composition according to claim 1, comprising a step of reducing a graphite oxide at 20 ° C or higher and Original
4
IndependentgrapheneCH₄N₂Sgraphite oxide
The method for producing graphene composition oxide is reduced at a weight ratio of thiourea to Original
5
IndependentgrapheneCH₄N₂SSelectrode active materialbinderelectrode for lithium ion battery
An electrode for a lithium ion battery, comprising method for producing graphene composition and a binder. Previously presented

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

electrode for lithium ion battery

binderbinder

graphene compositionconductive additive

electrode active materialactive material

Materials

Materials described outside the worked examples.

graphene

Claimed Conductive Additive

thiourea

CH₄N₂S

Claimed Dispersibility Agent Adsorbed On Graphene

Process steps

Additional fabrication and treatment steps described in the patent.

Chemical Reduction

Step 1

Temperature

20, 60°C

Process details

description:Reducing graphite oxide in the presence of thiourea to produce graphene composition with thiourea adsorbed on graphene surface

reducing agent:thiourea

temperature range:

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
S/C elemental ratio (XPS)	0.04–0.12 dimensionless	graphene composition
elemental sulfur content relative to carbon component	0.01–0.1 dimensionless

Tables

Table 1
Graphene conductivity (S/cm) Sulfur/Discharg e Before After Carbon ratio
The results are shown in Table 1.
p. 11

Why these are connected

Related documents with shared materials, methods, properties, or citations.

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