期刊
ELECTROCHIMICA ACTA
卷 184, 期 -, 页码 24-31出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.10.026
关键词
Codoped graphene; heteroatom-containing polymer; anode; lithium ion batteries
资金
- National Natural Science Foundation of China [21404014]
- Jilin Science & Technology Department (the development plan project of science and technology) [20150520002JH]
- Training Programs of Innovation and Entrepreneurship for Undergraduates [2014S034]
Novel nitrogen and sulfur dual-doped graphene sheets are synthesized via carbonization of poly(2,5-dimercapto-1,3,4-thiadiazole) (PDMcT) functionalized graphene oxides. Here, PDMcT, polymerized by the commercially available 2,5-dimercapto-1,3,4-thiadiazole (DMcT) monomer is chosen as the nitrogen and sulfur precursor, which plays a key role in the formation of nitrogen and sulfur dual-doped graphene. When evaluated as anode materials for lithium ion batteries, the nitrogen and sulfur dual-doped graphene sheets show high initial specific capacity of 1428.8 mAh g(-1), excellent cycling stability over 5000 cycles, and good rate capability (107 mAh g(-1) even at a current density of 10 A g(-1)), which can be attributed to the unique structure and dual-heteroatom doping. (C) 2015 Elsevier Ltd. All rights reserved.
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