High rate performance of virus enabled 3D n-type Si anodes for lithium-ion batteries

被引：43

作者：

Chen, Xilin ^{[1
]}

Gerasopoulos, Konstantinos ^{[2
]}

Guo, Juchen ^{[1
]}

Brown, Adam ^{[3
]}

Ghodssi, Reza ^{[2
]}

Culver, James N. ^{[3
]}

Wang, Chunsheng ^{[1
]}

机构：

[1] Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA

[2] Univ Maryland, Dept Elect & Comp Engn, Syst Res Inst, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[3] Univ Maryland, Dept Plant Sci & Landscape Architecture, Inst Biosci & Biotechol Res, College Pk, MD 20742 USA

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 14期

基金：

美国国家科学基金会;

关键词：

N-type Si; Lithium-ion battery; Tobacco mosaic virus; Rate performance; 3D structure; CARBON-COATED SILICON; CORE-SHELL NANOWIRES; HIGH-CAPACITY; ELECTRICAL-PROPERTIES; DEPOSITION; STORAGE; ELECTRODE;

D O I：

10.1016/j.electacta.2011.03.037

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A patterned 3D Si anode is fabricated by physical vapor deposition of n-type Si on a self-assembled TMV1cys-structured nickel current collector. The combination of the large surface area conferred by the virus-enabled 3D Ni/TMV1cys current collector with the high electric conductivity of n-type Si rods results in excellent cyclic stability and rate capability for the core-shell n-type Si/Ni/TMV1cys anodes. Electrochemical impedance spectroscopy reveals that the high electronic conductivity of n-type Si significantly reduces charge transfer resistance, thus even at high current densities the capacity of the n-type Si is increased to almost 630 mAh/g compared to undoped Si. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5210 / 5213

页数：4

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