期刊
CARBON
卷 109, 期 -, 页码 1-6出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2016.07.062
关键词
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资金
- National Basic Research Program of China [2014CB932400]
- National Natural Science Foundation of China [51525204, 51372167, U1401243]
- Shenzhen Basic Research Project [ZDSYS20140509172959981, JCYJ20150529164918734, JCYJ20150331151358140, JCYJ20150331151358136]
Nitrogen-doped microporous carbon spheres (NPCSs) with a high surface area (1958 m(2) g(-1)), large micropore volume and a high nitrogen content were synthesized by a simple one-step polymerization and subsequent ZnCl2 activation. The NPCSs can host a large number of small sulfur molecules, and restrict the reaction between the carbonate-based electrolytes and polysulfides. As a result, the NPCSs-sulfur (NPCS-S) cathode exhibits excellent cyclic stability (initial capacity of 1382 mAh g(-1) and 1002 mAh g(-1) after 200 cycles at 0.3 C) and high rate performance (645 mAh g(-1) at 3 C) even using the conventional carbonate-based electrolytes, demonstrating its potential use in long-life, safe lithium sulfur batteries. (C) 2016 Elsevier Ltd. All rights reserved.
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