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

Full Text
View Full Text

Other works cited in this record:

Ab Initio Molecular Dynamics Investigation of Singlet C₂H₂Li₂: Determination of the Ground State Structure and Observation of LiH Intermediates
journal, January 1995

Roethlisberger, Ursula; Klein, Michael L.
Journal of the American Chemical Society, Vol. 117, Issue 1, p. 42-48
DOI: 10.1021/ja00106a005

High reversible capacity carbon-lithium negative electrode in polymer electrolyte
journal, April 1995

Yazami, R.; Deschamps, M.
Journal of Power Sources, Vol. 54, Issue 2, p. 411-415
DOI: 10.1016/0378-7753(94)02113-H

Characterization of lithiated natural graphite before and after mild oxidation
journal, December 1998

Menachem, C.; Wang, Y.; Flowers, J.
Journal of Power Sources, Vol. 76, Issue 2, p. 180-185
DOI: 10.1016/S0378-7753(98)00167-0

Modified carbons for improved anodes in lithium ion cells
journal, July 2001

Buqa, H.; Golob, P.; Winter, M.
Journal of Power Sources, Vol. 97-98, p. 122-125
DOI: 10.1016/S0378-7753(01)00523-7

Effects of catalytic oxidation on the electrochemical performance of common natural graphite as an anode material for lithium ion batteries
journal, April 2000

Wu, Yuping; Jiang, Changyin; Wan, Chunrong
Electrochemistry Communications, Vol. 2, Issue 4, p. 272-275
DOI: 10.1016/S1388-2481(00)00022-9

Mild preparation of anode materials by a salt-free green method
journal, June 2002

Wu, Y. P.; Jiang, C.; Wan, C.
Electrochemistry Communications, Vol. 4, Issue 6, p. 483-487
DOI: 10.1016/S1388-2481(02)00356-9

Carbon anode materials for lithium ion batteries
journal, March 2003

Wu, Y. P.; Rahm, E.; Holze, R.
Journal of Power Sources, Vol. 114, Issue 2, p. 228-236
DOI: 10.1016/S0378-7753(02)00596-7

Similar records in DOepatents and OSTI.GOV collections:

Graphene-sulfur nanocomposites for rechargeable lithium-sulfur battery electrodes

Patent Liu, Jun ; Lemmon, John P ; Yang, Zhenguo ; Cao, Yuiliang ; Li, Xiaolin

Rechargeable lithium-sulfur batteries having a cathode that includes a graphene-sulfur nanocomposite can exhibit improved characteristics. The graphene-sulfur nanocomposite can be characterized by graphene sheets with particles of sulfur adsorbed to the graphene sheets. The sulfur particles have an average diameter less than 50 nm..
Full Text Available June 2014
Method of preparing graphene-sulfur nanocomposites for rechargeable lithium-sulfur battery electrodes

Patent Liu, Jun ; Lemmon, John P ; Yang, Zhenguo ; Cao, Yuliang ; Li, Xiaolin

A method of preparing a graphene-sulfur nanocomposite for a cathode in a rechargeable lithium-sulfur battery comprising thermally expanding graphite oxide to yield graphene layers, mixing the graphene layers with a first solution comprising sulfur and carbon disulfide, evaporating the carbon disulfide to yield a solid nanocomposite, and grinding the solid nanocomposite to yield the graphene-sulfur nanocomposite. Rechargeable-lithium-sulfur batteries having a cathode that includes a graphene-sulfur nanocomposite can exhibit improved characteristics. The graphene-sulfur nanocomposite can be characterized by graphene sheets with particles of sulfur adsorbed to the graphene sheets. The sulfur particles have an average diameter of less than 50 nm.
Full Text Available April 2015
Wick-and-pool electrodes for electrochemical cell

Patent Roche, Michael F. ; Faist, Suzan M. ; Eberhart, James G. ; Ross, Laurids E.

An electrode system includes a reservoir of liquid-metal reactant, and a wick extending from a submersed location within the reservoir into the molten electrolyte of an electrochemical cell structure. The wick is flooded with the liquid metal and thereby serves as one electrode within the cell. This electrode system has application in high-temperature batteries employing molten alkali metals or their alloys as active material within an electrode submersed within a molten salt electrolyte. It also can be used in electrochemical cells where the purification, separation or electrowinning of liquid metals is accomplished.
Full Text Available January 1977
Method of making electrodes for electrochemical cell

Patent Kaun, Thomas D. ; Kilsdonk, Dennis J.

A method of making an electrode for an electrochemical cell in which particulate electrode-active material is mixed with a liquid organic carrier chemically inert with respect to the electrode-active material, mixing the liquid carrier to form an extrudable slurry. The liquid carrier is present in an amount of from about 10 to about 50 percent by volume of the slurry, and then the carrier is removed from the slurry leaving the electrode-active material.
Full Text Available January 1983
Wick-and-pool electrodes for electrochemical cell

Patent Roche, Michael F. ; Faist, Suzan M. ; Eberhart, James G. ; Ross, Laurids E.

An electrode system includes a reservoir of liquid-metal reactant, and a wick extending from a submersed location within the reservoir into the molten electrolyte of an electrochemical cell structure. The wick is flooded with the liquid metal and thereby serves as one electrode within the cell. This electrode system has application in high-temperature batteries employing molten alkali metals or their alloys as active material within an electrode submersed within a molten salt electrolyte. It also can be used in electrochemical cells where the purification, separation or electrowinning of liquid metals is accomplished.
Full Text Available January 1980