集电器
材料科学
锂(药物)
电池(电)
铜
纳米孔
硅
锂离子电池
电化学
电流(流体)
多孔性
化学工程
纳米技术
电极
复合材料
冶金
电气工程
化学
内分泌学
物理化学
功率(物理)
工程类
物理
医学
量子力学
作者
Yuan Chen,Huajun Feng,Yihua Wang,Zhe Tang,Daniel H. C. Chua
标识
DOI:10.1016/j.matlet.2018.05.019
摘要
A low-cost and scalable ultrasonic synthetic method to produce copper metal current collector with uniform nanopores on the surface is achieved for the first time. A layer of silicon active material was sputtered on the surface of as-prepared metal current collector (vs. metal lithium) as an innovative current collecting material for lithium ion battery. The assembled battery with this current collector showed an areal capacity of 2.2 mAh/cm2, comparable to that of commercially available lithium ion batteries. Due to the nano-porous structure of current collector, the silicon active material electrochemical capacity retention and cycling stability also improved significantly.
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