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Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery

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Enhanced electrochemical properties of a Si-based anode using an electrochemically active polyamide imide binder

Cited 48 times inthomson ciCited 44 times inthomson ci
Title
Enhanced electrochemical properties of a Si-based anode using an electrochemically active polyamide imide binder
Author
Choi, Nam-SoonYew, Kyoung HanChoi, Wan-UkKim, Sung-Soo
Keywords
Binder; FT-IR; Polyamide imide; PVdF; Si-based electrode; Volume expansion
Issue Date
2008-03
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.177, no.2, pp.590 - 594
Abstract
Polyamide imide (PAI), one of the classes of copolyimides containing both high mechanical properties and processibility, is used as a polymeric binder of a Si particulate electrode. The initial coulombic efficiency is improved from 28.9% (Si-PVdF) to 74.9% (Si-PAI) by introducing a PAI binder into a Si-based electrode. Variations in thickness measured at various states of charge (SOCs) and depths of discharge (DODs) indicate that the PAI binder is a much more effective restraint on volume expansion in active Si materials during the charging process than poly(vinylidene fluoride) (PVdF) binder. The discharge capacity of Si-PAI electrodes is approximately 1700 mAh g(-1) after 20 cycles, which is attributed to the excellent maintenance of an electrical-conducting network during cycling.
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DOI
10.1016/j.jpowsour.2007.11.082
ISSN
0378-7753
Appears in Collections:
ECHE_Journal Papers
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