期刊
JOURNAL OF POWER SOURCES
卷 302, 期 -, 页码 174-179出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.10.049
关键词
Metal organic framework; Metal organic framework derived carbon; Tunable porous structure; Li-S batteries; Small sulfur molecule
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chair Program (CRC)
- Canada Foundation for Innovation (CFI)
- Ontario Research Fund (ORF)
- University of Western Ontario
For the first time, we report a facile approach to fabricate metal organic framework derived carbon (MOF-C) with tunable porous structure. Different from direct pyrolysis of MOFs and blind attempt in application, the in-situ ammonia treatment enables MOF-C with desired porous structure from enriched microporous structure to hierarchically mesoporous structure. Further, NH3 treated MOF-C as carbon host for sulfur loading performing as the cathode for Li-S batteries results in twice higher capacity retention than that of pristine MOF-C. Besides, different Li-S electrochemical mechanisms regarding the different porous structures of carbon are also revealed and investigated in this paper. (C) 2015 Elsevier B.V. All rights reserved.
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