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范慧林,王宥宏,虞明香,张俊婷,王康康,刘忆恩,马琳,张鹏,赵嘉,胡鹏程.纳米硅合金负极材料[J].稀有金属材料与工程(英文),2019,48(9):2899~2904.[FAN Hui-lin,WANG You-hong,YU Ming-xiang,ZHANG Jun-ting,WANG Kang-kang,LIU Yi-en,MA Lin,ZHANG Peng,ZHAO Jia and HU Peng-cheng.Nano-silicon alloy anode material[J].Rare Metal Materials and Engineering,2019,48(9):2899~2904.]
Nano-silicon alloy anode material
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Received:April 17, 2018  Revised:May 30, 2018
DOI:
Key words: Lithium-ion battery  nanomaterial  anode material  copper-aluminum-silicon alloy
Foundation item:山西省重点研发计划重点项目(201603D112002)
Author NameAffiliation
FAN Hui-lin,WANG You-hong,YU Ming-xiang,ZHANG Jun-ting,WANG Kang-kang,LIU Yi-en,MA Lin,ZHANG Peng,ZHAO Jia and HU Peng-cheng  
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Abstract:
      The microstructure and electrochemical property of nano-silicon alloy anode material are studied in this paper. The research shows that the outline of the nano-silicon particle is basically circular, and two copper-rich phases with different silicon contents are detected in the particle, and both phases with nanostructure are observed in its surface layer. The nano-silicon alloy negative electrode material needs to be used in a certain proportion with graphite, binder and conductive agent, and the stirring process also has an important influence on its electrochemical performance. The first-cycle coulombic efficiency of the material is improved to about 90%, and the specific capacity is still higher than 500 mAh/g after 100 cycles. The battery manufacturing process is similar to the graphite negative electrode, so it is easy to be applyed.