Research articles
ScienceAsia 49 (2023):ID 706-709 |doi:
10.2306/scienceasia1513-1874.2023.064
Enhanced cycle-capacity of micron scale silicon anode
materials for lithium-ion batteries using embedded
nanoparticles
Zhiheng Wanga,†, Fengxiang Guob,†, Xiaoli Hua, Jinqi Wanga, Wei Wanga,*, Caiyun Genga, Guangyuan Xub, Yao Wanga, Laurence A. Belfiorec, Jianguo Tanga,*
ABSTRACT: Micron scale Silicon (Si) powders embedded with nanoparticles were fabricated by dealloying methods
and extracted from antimony (Sb)-inoculated Aluminum-10 wt.% Silicon (Al-10Si) alloys. From TEM observation,
most of these nanoparticles were not connected with adjacent ones, with radii ranging from 3 to 10 nm. The cycling
performance of Si powders with nanoparticles delivered a specific capacity of 105.2 mAh/g after 30 cycles at a current
density of 0.05 mA/g, which was 40% higher than those without nanoparticles, due to the formation of preferential
channels for electrolytes. Therefore, the micron size Si structures with nanoparticles have shown a potential as highperformance anode materials for lithium-ion batteries.
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| a |
Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National
Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao
University, Qingdao 266071 China |
| b |
Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences),
Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology, Qingdao 266001 China
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| c |
Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523 USA |
* Corresponding author, E-mail: wangwei040901@163.com, tang@qdu.edu.cn
Received 29 Dec 2021, Accepted 8 Jun 2023
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