Copper nanorods supported phosphorus-doped silicon for lithium storage application

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• 作者：Zhibo Yang ; Desheng Wang ; Fei Li ; Hongwei Yue ; Dequan Liu ; Xiuwan Li ; Li Qiao ; Deyan He
• 关键词：Functional ; Deposition ; Microstructure ; Silicon ; Energy storage.
• 刊名：Materials Letters
• 出版年：15 February, 2014
• 年：2014
• 卷：117
• 期：Complete
• 页码：58-61
• 全文大小：1863 K

文摘

Functional Cu nanorods supported P-doped Si anode was designed to improve the performance of lithium-ion batteries for high-power applications. The binder-free anode consists of an electrochemical etched Cu nanorod network coated with P-doped Si. The obtained electrode exhibits excellent rate capability and superior cyclability. At a rate of 2 A/g, the anode presents a capacity of 2010 mA h/g even after 80 cycles with a capacity retention of above 80%. The anode also presents a stable rate performance even at a high rate of 10 A/g. The enhanced performance can be mainly ascribed to the Cu nanorod network which could result in a nanocable structure on the micro-level and play a role of scaffolding on the macro-level, as well as the nature of high conductivity and amorphism of the heavy P-doped Si coating.