Nitrogen-doped CMK-3@ graphene hybrids as a sulfur host material for use in lithium-sulfur batteries

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	Nitrogen-doped CMK-3@ graphene hybrids as a sulfur host material for use in lithium-sulfur batteries
	Tang Xiao-nan 1,2; Sun Zhen-hua 2; Zhuo Shu-ping 1; Li Feng 2
刊名	NEW CARBON MATERIALS
	2017-12-01
卷号	32 期号:6 页码:535-541
关键词	Complementary functions CMK-3 Graphene Physical adsorption Chemical adsorption
ISSN号	1007-8827
通讯作者	Zhuo Shu-ping(zhuosp@sdut.edu.cn) ; Li Feng(fli@imr.ac.cn)
英文摘要	Sulfur as a cathode material has the advantages of low cost, high theoretical energy density and safety. However, the capacity decay and a shuttle effect are major problems that cause poor coulombic efficiency and a short cycling life. An ordered mesoporous carbon, CMK-3 was oxidized by 67% HNO3, added to a graphene oxide suspension, sonicated, freeze. dried and annealed in NH3 to obtain a nitrogen-doped CMK-3@ graphene hybrid, which was melt-infiltrated with sulfur to prepare a cathode material for lithium-sulfur batteries. Results indicate that the CMK-3 particles are uniformly dispersed in graphene sheets and their surfaces are coated with graphene. The N-(CMK-3@ G)/S has a reversible discharge capacity of 867. 3 mAh center dot g(-1) after 300 cycles at a current density of 335 mA center dot g-1 with a capacity retention of 82%. Compared with N-CMK-3/S and N-G/S cathodes, the rate performance and polarization characteristics are also improved. The graphene coating on CMK-3 traps soluble polysulfides during the charge/discharge process and nitrogen doping facilitates chemical adsorption of polysulfides to inhibit the shuttle effect, which together improve the performance of the battery.
资助项目	Natural Science Foundation of Shandong Province[2015ZRB01765]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000423505900006
资助机构	Natural Science Foundation of Shandong Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/125641]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhuo Shu-ping; Li Feng
作者单位	1.Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Tang Xiao-nan,Sun Zhen-hua,Zhuo Shu-ping,et al. Nitrogen-doped CMK-3@ graphene hybrids as a sulfur host material for use in lithium-sulfur batteries[J]. NEW CARBON MATERIALS,2017,32(6):535-541.
APA	Tang Xiao-nan,Sun Zhen-hua,Zhuo Shu-ping,&Li Feng.(2017).Nitrogen-doped CMK-3@ graphene hybrids as a sulfur host material for use in lithium-sulfur batteries.NEW CARBON MATERIALS,32(6),535-541.
MLA	Tang Xiao-nan,et al."Nitrogen-doped CMK-3@ graphene hybrids as a sulfur host material for use in lithium-sulfur batteries".NEW CARBON MATERIALS 32.6(2017):535-541.