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Failure Modes of Silicon Powder Negative Electrode in Lithium Secondary Batteries
Cited 545 time in
Web of Science
Cited 566 time in Scopus
- Authors
- Issue Date
- 2004-09-03
- Publisher
- Electrochemical Society
- Citation
- Electrochem. Solid-State Lett., 7, A306 (2004)
- Abstract
- Si composite negative electrodes for lithium secondary batteries degrade in the dealloying period with an abrupt increase in
internal resistance that is caused by a breakdown of conductive network made between Si and carbon particles. This results from
a volume contraction of Si particles after expansion in the previous alloying process. Due to the large internal resistance, the
dealloying reaction is not completed while Si remains as a lithiated state. The anodic performance is greatly improved either by
applying a pressure on the cells or loading a larger amount of conductive carbon in the composite electrodes.
- ISSN
- 1099-0062
- Language
- English
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