B-doped SiOx composite with three dimensional conductive network for high performance lithium-ion battery anode

Wenjie He; Tengfei Zhang; Zhiwei Li; Jiangmin Jiang; Chenglong Chen; Nan Liu; Hui Dou; Xiao Gang Zhang

Journal of Materiomics (Jul 2021)

B-doped SiOx composite with three dimensional conductive network for high performance lithium-ion battery anode

Wenjie He,
Tengfei Zhang,
Zhiwei Li,
Jiangmin Jiang,
Chenglong Chen,
Nan Liu,
Hui Dou,
Xiao Gang Zhang

Affiliations

Wenjie He: Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
Tengfei Zhang: Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Key Laboratory of Preparation and Applications of Environmental Friendly Material of the Ministry of Education, Jilin Normal University, Changchun, 130103, China
Zhiwei Li: Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
Jiangmin Jiang: Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
Chenglong Chen: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
Nan Liu: Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
Hui Dou: Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Corresponding author.
Xiao Gang Zhang: Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Corresponding author.

Journal volume & issue: Vol. 7, no. 4
pp. 802 – 809

Abstract

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Currently, the practical application of SiOx still has a huge hindrance in the area of lithium ion battery, because it is unable to achieve an effective contact with surrounding conducting materials, resulting in failure to form lithium ion migration tunnels. In this work, we presented a facile method to synthesize the B-doped SiOx composite by adhering SiOx particles with MWCNT (multi-walled carbon nanotube) under the assistance of lithium metaborate (LiBO2). LiBO2, as a sintering aid, not only can react with SiOx to form a compacted framework, but also build a three-dimensional (3D) conductive network for ions transportation. Furthermore, B-SiOx@CNT@LBO anode delivers a remarkable lithium storage performance in terms of long cycles and high rate capability. A full cell coupled with NCM622 cathode achieves a high energy density of 429.5 Wh kg−1 based on the total mass of cathode.

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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