Copper nanowires based current collector for light-weight and flexible composite silicon anode with high stability and specific capacity

被引：17

作者：

Lin, Ruoxu ^{[1
]}

Zhang, Shichao ^{[1
]}

Du, Zhijia ^{[1
]}

Fang, Hua ^{[1
]}

Ren, Yanbiao ^{[1
]}

Wu, Xiaomeng ^{[1
]}

机构：

[1] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 106期

基金：

中国国家自然科学基金;

关键词：

LITHIUM-ION BATTERIES; RECHARGEABLE BATTERIES; THIN-FILM; ELECTROCHEMICAL PROPERTIES; COATED SILICON; ALLOY ANODES; SI; LI; INSERTION; ELECTRODE;

D O I：

10.1039/c5ra13568k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A metal network fabricated by copper nanowires (CuNWs), synthesized in a facile way, is introduced to silicon composite anode as current collector for lithium-ion battery. The light and flexible sheet can act as the collector and the substrate, and improve the kinetic electron transport and the stability of composite anode. In this configuration, the composite anode exhibits a better capacity retention of 89.4% and a coulombic efficiency of similar to 93% after 60 cycles (rate = 0.2C) compared to conventional composite thin film anode in which CuNWs are beneficial for electrochemical performances. There appears to be a promising improvement that the light-weighted anode can also be applied to meet the commercial requirement.

引用

页码：87090 / 87097

页数：8

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