Mechanical analysis and in situ structural and morphological evaluation of Ni-Sn alloy anodes for Li ion batteries

J. Chen, S. J. Bull, S. Roy, H. Mukaibo, Hiroki Nara, Toshiyuki Momma, Tetsuya Osaka, Y. Shacham-Diamand

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

In lithium ion batteries, it has previously been shown that Ni-Sn thin film anodes containing 62 at.% Sn show outstanding electrochemical characteristics, e.g. good capacity and endurance, during charge-discharge cycling. However, their mechanical response, which is likely related to their lifetime in service, has so far received relatively little attention. To address this, nanoindentation and nanowear techniques have been used to characterize the mechanical properties of thin Ni-Sn films electrodeposited on a copper substrate. In situ morphology analysis together with in situ stress measurement has been performed to assess the properties of Ni-Sn thin film anodes during electrochemical cycling. The change in mechanical properties, residual stress and fracture behaviour of the anodes is related to the phase changes which occur during charge-discharge cycling. The correlation between the mechanical properties of the films and their charge-discharge characteristics serves as a useful indicator for optimized design of a Sn-based intermetallic anode film for lithium ion secondary batteries.

Original languageEnglish
Article number025302
JournalJournal of Physics D: Applied Physics
Volume41
Issue number2
DOIs
Publication statusPublished - 2008 Jan 21

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electric batteries
Anodes
anodes
evaluation
mechanical properties
Mechanical properties
cycles
ions
lithium
Thin films
storage batteries
Secondary batteries
stress measurement
endurance
Stress measurement
Nanoindentation
thin films
nanoindentation
Lithium
Intermetallics

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Mechanical analysis and in situ structural and morphological evaluation of Ni-Sn alloy anodes for Li ion batteries. / Chen, J.; Bull, S. J.; Roy, S.; Mukaibo, H.; Nara, Hiroki; Momma, Toshiyuki; Osaka, Tetsuya; Shacham-Diamand, Y.

In: Journal of Physics D: Applied Physics, Vol. 41, No. 2, 025302, 21.01.2008.

Research output: Contribution to journalArticle

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