期刊
MATERIALS LETTERS
卷 229, 期 -, 页码 134-137出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.06.104
关键词
Particle size; Edge structure; Lithium ion batteries; Electrical properties; Energy storage and conversion
资金
- Science and Technology Department of Sichuan Province [2017JZ0021, 2017SZ0039]
- Education Department of Sichuan Province [17ZA0298]
Ultrafine layered graphite was prepared by jet impinging apparatus to reduce the size of graphite. The results showed that graphite formed a unique assembled structure with more exposed gaps and defects. As the anode material for lithium ion batteries, the ultrafine layered graphite showed a lower diffusion resistance compared with traditional graphite. In addition, ultrafine layered graphite electrodes displayed a higher reversible capacity of 393 mAh g(-1 )compared to the 345 mAh g(-1) of traditional graphite electrodes and offered better cycling performance, retaining 78% of the initial reversible capacity after 800 cycles at rate 5 C. This exciting discovery based on decreasing graphite particle diameter may provide some novel ideas for improving the performance of graphite electrodes. (C) 2018 Elsevier B.V. All rights reserved.
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