Graphene nanocomposites for electrochemical cell electrodes

Title: Graphene nanocomposites for electrochemical cell electrodes

A composite composition for electrochemical cell electrode applications, the composition comprising multiple solid particles, wherein (a) a solid particle is composed of graphene platelets dispersed in or bonded by a first matrix or binder material, wherein the graphene platelets are not obtained from graphitization of the first binder or matrix material; (b) the graphene platelets have a length or width in the range of 10 nm to 10 .mu.m; (c) the multiple solid particles are bonded by a second binder material; and (d) the first or second binder material is selected from a polymer, polymeric carbon, amorphous carbon, metal, glass, ceramic, oxide, organic material, or a combination thereof. For a lithium ion battery anode application, the first binder or matrix material is preferably amorphous carbon or polymeric carbon. Such a composite composition provides a high anode capacity and good cycling response. For a supercapacitor electrode application, the solid particles preferably have meso-scale pores therein to accommodate electrolyte.

Inventors:: Zhamu, Aruna; Jang, Bor Z.; Shi, Jinjun

Issue Date:: 2015-11-19

OSTI Identifier:: 1226231

Assignee:: Nanotek Instruments, Inc. DOESC

Patent Number(s):: 9,190,667

Application Number:: 12/220,651

Resource Relation:: Patent File Date: 2008 Jul 28

Research Org:: Nanotek Instruments, Inc, Dayton, OH (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 30 DIRECT ENERGY CONVERSION

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