期刊
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷 32, 期 3, 页码 195-199出版社
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2015.12.019
关键词
Polymer-derived ceramics; Silsesquiazane; Lithium ion battery; Lithium ion conductivity
资金
- Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Knowledge Economy, Republic of Korea [20124030200070]
Herein, we developed novel silicon-carbon-nitrogen (SiCN) composites synthesized by pyrolyzing silsesquiazane polymer as an anode material for rechargeable lithium-ion batteries. Among variable pyrolysis temperatures of 700 degrees C, 1000 degrees C and 1300 degrees C, the SiCN composites prepared at 1000 degrees C showed the highest capacity with outstanding battery cycle life by cyclic voltammetry and electrochemical impedance spectroscopy. Such good battery and electrochemical performances should be attributed to a proper ratio of carbon and nitrogen or oxygen in the SiCN composites. Furthermore, our SiCN electrode possessed better lithium ion conductivity than pure silicon nanoparticles. This work demonstrates that polymer-derived composites are among the promising strategies to achieve highly stable silicon anodes for rechargeable batteries. Copyright (C) 2015, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved.
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