title: Nanoporous silicon prepared through air-oxidation demagnesiation of Mg2Si and properties of its lithium ion batteries.
abstract: Nanoporous silicon has been prepared through the air-oxidation demagnesiation of Mg2Si at 600 °C for 10 hours (Mg2Si + O2 → Si + MgO), followed by HCl washing. Mg2Si was prepared from 200 mesh commercial Si at 500 °C for 5 h in an autoclave. The as-prepared Si exhibits a reversible capacity of 1000 mA h g(-1) at 36 A g(-1) and ∼1200 mA h g(-1) at 1.8 A g(-1) over 400 cycles.
authors: Hefei National Laboratory for Physical Science at Micro-scale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China. ytqian@ustc.edu.cn ychzhu@ustc.edu.cn.
authors: Jianwen
authors: J
authors: Liang
authors: Xiaona
authors: X
authors: Li
authors: Zhiguo
authors: Z
authors: Hou
authors: Cong
authors: C
authors: Guo
authors: Yongchun
authors: Y
authors: Zhu
authors: Yitai
authors: Y
authors: Qian