Three-dimensional porous Sn–Cu alloy anode for lithium-ion batteries
Three-dimensional porous Sn–Cu alloy anode for lithium-ion batteries
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DOI：
10.1016/j.electacta.2010.07.015
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发表时间：
2010-10
影响因子：
6.6
通讯作者：
Leigang Xue;Zhenghao Fu;Yueh-Yun Yao;Tao Huang;A. Yu
中科院分区：
文献类型：
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作者：
Leigang Xue;Zhenghao Fu;Yueh-Yun Yao;Tao Huang;A. Yu
制备了一种用于锂离子电池的无粘合剂三维（3D）多孔Cu 6Sn 5阳极。在这种新的方法中，锡沉积在泡沫铜作为阳极集流体，以及铜源的Cu 6Sn 5合金形成的化学镀。通过优化后处理工艺，在泡沫铜网络表面形成了厚度为1.2μm的Cu 6Sn 5合金。同时制备了三维多孔Sn-Cu_6Sn_5和Cu_3Sn-Cu_（10）Sn_3-Cu_6Sn_5复合阳极。电化学测试表明，3D多孔Cu 6Sn 5阳极在比电容和循环性能方面表现出最佳的电化学性能，在100次循环中可提供404 mAhg − 1的可充电容量。
A binder-free three-dimensional (3D) porous Cu6Sn5anode was prepared for lithium-ion batteries. In this novel approach, tin was deposited by electroless-plating on copper foam which was served as anode current collector as well as the source of copper for Cu6Sn5alloy formation. With optimized post-treatment condition, Cu6Sn5alloy with thickness of 1.2μm was formed on the surface of copper foam network. 3D porous Sn–Cu6Sn5and Cu3Sn–Cu10Sn3–Cu6Sn5composite anodes were also prepared for comparison. Electrochemical tests showed that 3D porous Cu6Sn5anode exhibits the best electrochemical performance in terms of specific capacitance and cycleability, which delivers a rechargeable capacity of 404mAhg−1over 100 cycles.