Effect of electrode dimensionality and morphology on the performance of Cu2Sb thin film electrodes for lithium-ion batteries

Lynn Trahey, Harold H Kung, Michael M. Thackeray, John T. Vaughey

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Although graphitic carbons have been commercially used in lithium-ion batteries for many years, their low crystallographic density limits their use in applications where space is at a premium. Among the alternative anode materials being considered for these applications are Zintl phases and intermetallic insertion anodes. Historically, main-group-metal-based anode materials have had problems with respect to volume expansion experienced on lithiation and its effect on cycle life. In this paper, we report the role of morphology and electrode dimensionality in extending the cycle life of the intermetallic insertion anode Cu2Sb. We have found that controlling the surface area of the active material and building internal volume into the electrode structure significantly decreases the capacity fade on cycling. The decrease in fade rate may be due to the active material gradient identified within the structure produced by the electrodeposition process. This enhancement in cycling can be attributed to keeping the displaced copper closer to the active particles and to reducing the diffusion distances within the electrode.

Original languageEnglish
Pages (from-to)3984-3988
Number of pages5
JournalEuropean Journal of Inorganic Chemistry
Issue number26
DOIs
Publication statusPublished - Sep 2011

Fingerprint

Anodes
Thin films
Electrodes
Intermetallics
Life cycle
Space applications
Electrodeposition
Copper
Carbon
Metals
Lithium-ion batteries

Keywords

  • Antimony
  • Copper
  • Electrochemistry
  • Intermetallic phases
  • Thin films

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Effect of electrode dimensionality and morphology on the performance of Cu2Sb thin film electrodes for lithium-ion batteries. / Trahey, Lynn; Kung, Harold H; Thackeray, Michael M.; Vaughey, John T.

In: European Journal of Inorganic Chemistry, No. 26, 09.2011, p. 3984-3988.

Research output: Contribution to journalArticle

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