中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 23 No. 6 June 2013 |
（1. Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes,School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;2. Quality Control Division, GAC Toyota Motor Co. Ltd., Guangzhou 511455, China）
Abstract:To enhance the electrochemical performance of silicon-based anode, a Cu current collector with blind holes (CCBH) was fabricated by laser machining. The electrodes were composed of CCBH and smooth current collector, and cells assembled with electrodes were tested by charge-discharge cycling. In comparison with smooth current collector, the CCBH exhibits performance superiority. The curves of voltage—capacity indicate that CCBH can keep electrode structure to offer low contact resistance. The results show that CCBH can improve the cycle performance and coulomb efficiency of silicon-based anode.
Key words: lithium ion battery; current collector; silicon; cycle performance
