期刊
ELECTROCHIMICA ACTA
卷 54, 期 24, 页码 5937-5941出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.05.070
关键词
Thin-film lithium-ion batteries; Silicon negative electrodes; Liquid and solid electrolytes; Electrode/electrolyte interface activation; Charge transfer kinetics; Activation energies
资金
- Dutch Science Foundation SenterNovem
Silicon is a promising negative electrode material candidate for lithium-ion thin-film batteries because of its very high theoretical storage capacity. Assuming full conversion of Si into Li(15)Si(4), a theoretical capacity of 3579 mAh g(-1) or 8303 mAh cm(-3) is expected. However, the interaction between silicon thin-film electrodes and various electrolytes (both liquid and solid) is, up until now, not well understood. The interface between the electrode and electrolyte plays a crucial role in the Li-(de)insertion reaction as here the actual charge transfer reaction takes places. To this end, some important issues on the activation of the electrode/electrolyte interface will be addressed in this paper. Moreover, new results on the temperature dependence of the charge transfer kinetics of evaporated silicon thin-film electrodes combined with four different liquid and solid electrolytes will be presented. (C) 2009 Elsevier Ltd. All rights reserved.
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