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Title: Flexible asymmetric electrochemical cells using nano graphene platelet as an electrode material

Abstract

A flexible, asymmetric electrochemical cell comprising: (A) A sheet of graphene paper as first electrode comprising nano graphene platelets having a platelet thickness less than 1 nm, wherein the first electrode has electrolyte-accessible pores; (B) A thin-film or paper-like first separator and electrolyte; and (C) A thin-film or paper-like second electrode which is different in composition than the first electrode; wherein the separator is sandwiched between the first and second electrode to form a flexible laminate configuration. The asymmetric supercapacitor cells with different NGP-based electrodes exhibit an exceptionally high capacitance, specific energy, and stable and long cycle life.

Inventors:
;
Issue Date:
Research Org.:
Nanotek Instruments, Inc., Dayton, OH (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1532087
Patent Number(s):
9979060
Application Number:
15/463,531
Assignee:
Nanotek Instruments, Inc. (Dayton, OH)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Resource Type:
Patent
Resource Relation:
Patent File Date: 2017-03-20
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 42 ENGINEERING; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Zhamu, Aruna, and Jang, Bor Z. Flexible asymmetric electrochemical cells using nano graphene platelet as an electrode material. United States: N. p., 2018. Web.
Zhamu, Aruna, & Jang, Bor Z. Flexible asymmetric electrochemical cells using nano graphene platelet as an electrode material. United States.
Zhamu, Aruna, and Jang, Bor Z. Tue . "Flexible asymmetric electrochemical cells using nano graphene platelet as an electrode material". United States. https://www.osti.gov/servlets/purl/1532087.
@article{osti_1532087,
title = {Flexible asymmetric electrochemical cells using nano graphene platelet as an electrode material},
author = {Zhamu, Aruna and Jang, Bor Z.},
abstractNote = {A flexible, asymmetric electrochemical cell comprising: (A) A sheet of graphene paper as first electrode comprising nano graphene platelets having a platelet thickness less than 1 nm, wherein the first electrode has electrolyte-accessible pores; (B) A thin-film or paper-like first separator and electrolyte; and (C) A thin-film or paper-like second electrode which is different in composition than the first electrode; wherein the separator is sandwiched between the first and second electrode to form a flexible laminate configuration. The asymmetric supercapacitor cells with different NGP-based electrodes exhibit an exceptionally high capacitance, specific energy, and stable and long cycle life.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

Works referenced in this record:

Flexible energy storage devices based on nanocomposite paper
journal, August 2007


Graphene oxide doped polyaniline for supercapacitors
journal, June 2009


Asymmetric electrochemical capacitor and method of making
patent, April 2001


Supercapacitor Devices Based on Graphene Materials
journal, July 2009


Graphene-based electrochemical supercapacitors
journal, January 2008


Preparation of Graphitic Acid
patent, July 1957


Nano-scaled graphene plate nanocomposites for supercapacitor electrodes
patent, November 2009


Capacitive behavior of graphene–ZnO composite film for supercapacitors
journal, September 2009


Unequalisation of electrode capacitances for enhanced energy capacity in asymmetrical supercapacitors
journal, January 2010


Asymmetric Flexible Supercapacitor Stack
journal, April 2008


Carbon nanosheets as the electrode material in supercapacitors
journal, December 2009


Graphene-Based Ultracapacitors
journal, October 2008