Facile Synthesis of Ultrasmall CoS2 Nanoparticles within Thin N-Doped Porous Carbon Shell for High Performance Lithium-Ion Batteries

doi:10.1002/smll.201403579

CORC > 北京大学 > 工学院

	Facile Synthesis of Ultrasmall CoS2 Nanoparticles within Thin N-Doped Porous Carbon Shell for High Performance Lithium-Ion Batteries
	Wang Qingfei ; Zou Ruqiang ; Xia Wei ; Ma Jin ; Qiu Bin ; Mahmood Asif ; Zhao Ruo ; Yang Yangyuchen ; Xia Dingguo ; Xu Qiang
刊名	small weinheim an der bergstrasse germany
	2015
关键词	cobalt sulfide,hybrid composites,lithium ion batteries,nanometal-organic frameworks,nanoparticles
DOI	10.1002/smll.201403579
英文摘要	Cobalt sulfide (CoS2 ) is considered one of the most promising alternative anode materials for high-performance lithium-ion batteries (LIBs) by virtue of its remarkable electrical conductivity, high theoretical capacity, and low cost. However, it suffers from a poor cycling stability and low rate capability because of its volume expansion and dissolution of the polysulfide intermediates in the organic electrolytes during the battery charge/discharge process. In this study, a novel porous carbon/CoS2 composite is prepared by using nano metal-organic framework (MOF) templates for high-preformance LIBs. The as-made ultrasmall CoS2 (15 nm) nanoparticles in N-rich carbon exhibit promising lithium storage properties with negligible loss of capacity at high charge/discharge rate. At a current density of 100 mA g(-1) , a capacity of 560 mA h g(-1) is maintained after 50 cycles. Even at a current density as high as 2500 mA g(-1) , a reversible capacity of 410 mA h g(-1) is obtained. The excellent and highly stable battery performance should be attributed to the synergism of the ultrasmall CoS2 particles and the thin N-rich porous carbon shells derieved from nanosized MOF precusors.? 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000355647600006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); EI; PubMed; 52; ARTICLE; rzou@pku.edu.cn
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/153792]
专题	工学院
推荐引用方式 GB/T 7714	Wang Qingfei,Zou Ruqiang,Xia Wei,et al. Facile Synthesis of Ultrasmall CoS2 Nanoparticles within Thin N-Doped Porous Carbon Shell for High Performance Lithium-Ion Batteries[J]. small weinheim an der bergstrasse germany,2015.
APA	Wang Qingfei.,Zou Ruqiang.,Xia Wei.,Ma Jin.,Qiu Bin.,...&Xu Qiang.(2015).Facile Synthesis of Ultrasmall CoS2 Nanoparticles within Thin N-Doped Porous Carbon Shell for High Performance Lithium-Ion Batteries.small weinheim an der bergstrasse germany.
MLA	Wang Qingfei,et al."Facile Synthesis of Ultrasmall CoS2 Nanoparticles within Thin N-Doped Porous Carbon Shell for High Performance Lithium-Ion Batteries".small weinheim an der bergstrasse germany (2015).