Issue 12, 2014
From the journal:

Nanoscale

Synthesis and electrochemical properties of silicon nanosheets by DC arc discharge for lithium-ion batteries†

Xiuhong Yu,a   Fanghong Xue,*a   Hao Huang,a   Chunjing Liu,a   Jieyi Yu,a   Yuejun Sun,a   Xinglong Dong,*a   Guozhong Caoab  and  Youngguan Jungc  

* Corresponding authors

a School of Materials Science and Engineering, Dalian University of Technology, Dalian 116023, P.R.China
E-mail: fhxue@dlut.edu.cn, dongxl@dlut.edu.cn

b Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA

c Department of Mechanical Engineering, Kumoh National Institute of Technology, Daehakro 53, Gumi, Gyeong-Buk, Republic of Korea

Abstract

Two-dimensional (2D) ultrathin silicon nanosheets (Si NSs) were synthesized by DC arc discharge method and investigated as anode material for Li-ion batteries. The 2D ultrathin characteristics of Si NSs is confirmed by means of transmission electron microscopy (TEM) and atomic force microscopy (AFM). The average size of Si NSs is about 20 nm, with thickness less than 2.5 nm. The characteristic Raman peak of Si NSs is found to have an appreciable (20 nm) shift to low frequency, presumably due to the size effect. The synergistic effects of Ar+ and H+ lead to 2D growth of Si NSs under high temperature and energy. Electrochemical analyses reveal that Si NSs anode possesses stable cycling performance and fast diffusion of Li-ions with insertion/extraction processes. Such Si NSs might be a promising candidate for anode of Li-ion batteries.

Graphical abstract: Synthesis and electrochemical properties of silicon nanosheets by DC arc discharge for lithium-ion batteries

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Article information

DOI
https://doi.org/10.1039/C3NR06418B
Article type
Paper
Submitted
03 Dec 2013
Accepted
15 Mar 2014
First published
21 Mar 2014

Nanoscale, 2014,6, 6860-6865

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Synthesis and electrochemical properties of silicon nanosheets by DC arc discharge for lithium-ion batteries

X. Yu, F. Xue, H. Huang, C. Liu, J. Yu, Y. Sun, X. Dong, G. Cao and Y. Jung, Nanoscale, 2014, 6, 6860 DOI: 10.1039/C3NR06418B

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