Graphite foams for lithium-ion battery current collectors

N. J. Dudney, T. N. Tiegs, J. O. Kiggans, Y. I. Jang, J. W. Klett

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

Graphite open-cell foams, with their very high electronic and thermal conductivities, may serve as high surface area and corrosion resistant current collectors for lithium-ion batteries. As a proof of principle, cathodes were prepared by sintering carbon-coated LiFePO4 particles into the porous graphite foams. Cycling these cathodes in a liquid electrolyte cell showed promising performance even for materials and coatings that have not been optimized. The specific capacity is not limited by the foam structure, but by the cycling performance of the coated LiFePO4 particles. Upon extended cycling for more than 100 deep cycles, no loss of capacity is observed for rates of C/2 or less. The uncoated graphite foams will slowly intercalate lithium reversibly at potentials less than 0.2 volts versus lithium. copyright The Electrochemical Society.

Original languageEnglish
Title of host publicationECS Transactions - Lithium-Ion Batteries
Subtitle of host publicationMaterials and Devices
PublisherElectrochemical Society Inc.
Pages23-28
Number of pages6
Edition27
ISBN (Print)9781604239072
DOIs
StatePublished - 2006
EventLithium-Ion Batteries: Materials and Devices - 210th ECS Meeting - Cancun, Mexico
Duration: Oct 29 2006Nov 3 2006

Publication series

NameECS Transactions
Number27
Volume3
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceLithium-Ion Batteries: Materials and Devices - 210th ECS Meeting
Country/TerritoryMexico
CityCancun
Period10/29/0611/3/06

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