期刊
JOURNAL OF POWER SOURCES
卷 248, 期 -, 页码 570-576出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.09.132
关键词
Lithium sulfur battery; Sulfur cathode; Multi-walled carbon nanotubes; Carbonization
资金
- Strategic Emerging Industries Program of Shenzhen, China [JCYJ201206 18164543322]
- National Natural Science Foundation of China [20803095]
- Engineering Research Center of Advanced Battery Materials, the Ministry of Education, China
We present a design and synthesis of a hierarchical architecture of multi-walled carbon nanotubes @ mesoporous carbon (MWCNT@Meso-C) using unique multi-walled carbon nanotubes @ metal-organic framework (MWCNT@MOF-5) as both template and precursor. Active sulfur is encapsulated into the MWCNT@Meso-C matrix prepared via carbonizing MWCNT@MOF-5 polyhedrons for high performance lithium sulfur battery. The initial and 50th cycle discharge capacity of MWCNT@Meso-CIS sulfur cathode are as high as 1343 mAh g(-1) and 540 mAh g(-1) at a high current rate of 0.5 C. CV and EIS tests indicate that the MWCNT@Meso-CIS sulfur cathode has smaller resistance and better kinetics characteristics than that of the MWCNT@MOF-5 sulfur cathode. Test results indicate that the MWCNT@Meso-C is a promising host material for the sulfur cathode in the lithium sulfur battery applications. (C) 2013 Elsevier B.V. All rights reserved.
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