Effect of organic electrolytes on performance of alloy negative materials for Li-ion battery

WANG Lianbang; KANG Huqiang; YANG Zhenzhen; XU Tugen; MAO Xinbiao; MA Chun’an

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Effect of organic electrolytes on performance of alloy negative materials for Li-ion battery

更新时间：2025-12-10

- Effect of organic electrolytes on performance of alloy negative materials for Li-ion battery
- CIESC Journal Issue S1, Pages: 6-10(2008)
- 作者机构：
  
  浙江工业大学化学工程与材料学院,绿色化学合成技术国家重点实验室培育基地
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：30 June 2008，
  
  Published：30 June 2008
- 稿件说明：
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WANG Lianbang, KANG Huqiang, YANG Zhenzhen, et al. Effect of organic electrolytes on performance of alloy negative materials for Li-ion battery[J]. CIESC Journal, 2008, (S1): 6-10.
DOI：

WANG Lianbang, KANG Huqiang, YANG Zhenzhen, et al. Effect of organic electrolytes on performance of alloy negative materials for Li-ion battery[J]. CIESC Journal, 2008, (S1): 6-10. DOI：

摘要

锂离子电池合金型负极材料的研究得到了广泛的关注，但是合金电极与电解液相互作用的研究非常少。本文采用电镀和热处理相结合的方法制备出Cu6Sn5合金薄膜电极，研究了各种电解液对电极性能的影响。研究结果表明，合金电极在LiN(CF2SO2)2(LITFSI)为溶质的电解液中表现出比在常用的以LiPF6作为溶质的电解液中更高的容量和更好的循环性能。合金薄膜电极在1mol·L-1 LITFSI/EC∶DEC(1∶2)电解液中具有更小的反应电阻和更大的反应电流密度，锂离子在电极上插入和脱嵌的可逆性良好，反应电阻只有在1mol·L-1 LiPF6/PC电解液中的1/10。研究结果表明，乙烯碳酸酯(EC)由于在充放电过程中会形成固体电解质界面（SEI）膜，能大幅度提高材料的电化学性能，在锂离子电池中是不可或缺的。

Abstract

Alloy negative materials for Li-ion batteries have been paid much attention because of high specific capacity and safety

but the research between alloy negative materials and the electrolytes was very fewIn this work

Cu6Sn5 alloy film electrode has been prepared by electroplating and heat-treatmentResearch result showed that alloy film electrode in LiN(CF2SO2)2(LITFSI) electrolyte presented higher discharge capacity and better cyclic capability than that in LiPF6 electrolyteCompared to 1mol·L-1 LiPF6/PC electrolyte

alloy film electrode in 1mol·L-1 LITFSI/EC∶DEC(1∶2) electrolyte had lower reaction resistance

larger reaction peak current density and good reversibility for Li+ insertion/desertionThe addition of EC could improve the electrochemical properties of alloy electrode due to the formation of solid electrolyte interface (SEI) film

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