1.School of Materials Science and Engineering,Taiyuan University of Science and Technology;2.Taiyuan University of Science and Technology;3.Shanxi Wortheimer New Material Technology Co., Ltd.
Clc Number:
TM912
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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.
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[FAN Hui-lin, WANG You-hong, YU Ming-xiang, ZHANG Jun-ting, WANG Kang-kang, LIU Yi-en, MA Lin, ZHANG Peng, ZHAO Jia, HU Peng-cheng. Nano-silicon alloy anode material[J]. Rare Metal Materials and Engineering,2019,48(9):2899~2904.] DOI:[doi]