A Deep Reduction and Partial Oxidation Strategy for Fabrication of Mesoporous Si Anode for Lithium Ion Batteries

Jianwen Liang; Xiaona Li; Zhiguo Hou; Wanqun Zhang; Yongchun Zhu; Yitai Qian

doi:10.1021/acsnano.5b06995

A Deep Reduction and Partial Oxidation Strategy for Fabrication of Mesoporous Si Anode for Lithium Ion Batteries

ACS Nano. 2016 Feb 23;10(2):2295-304. doi: 10.1021/acsnano.5b06995. Epub 2016 Jan 25.

Authors

Jianwen Liang^{1

2}, Xiaona Li¹, Zhiguo Hou¹, Wanqun Zhang¹, Yongchun Zhu¹, Yitai Qian^{1

2}

Affiliations

¹ Hefei National Laboratory for Physical Science at Microscale, Department of Chemistry, University of Science and Technology of China , 96 JinZhai Road, Hefei 230026, China.
² School of Chemistry and Chemical Engineering, Shandong University , Jinan, Shandong 250100, P. R. China.

PMID: 26789625
DOI: 10.1021/acsnano.5b06995

Abstract

A deep reduction and partial oxidation strategy to convert low-cost SiO2 into mesoporous Si anode with the yield higher than 90% is provided. This strategy has advantage in efficient mesoporous silicon production and in situ formation of several nanometers SiO2 layer on the surface of silicon particles. Thus, the resulted silicon anode provides extremely high reversible capacity of 1772 mAh g(-1), superior cycling stability with more than 873 mAh g(-1) at 1.8 A g(-1) after 1400 cycles (corresponding to the capacity decay rate of 0.035% per cycle), and good rate capability (∼710 mAh g(-1) at 18A g(-1)). These promising results suggest that such strategy for mesoporous Si anode can be potentially commercialized for high energy Li-ion batteries.

Keywords: general strategy; high stabilization; lithium ion batteries; mesoporous; silicon.

Publication types

Research Support, Non-U.S. Gov't