Cobalt Sulfide Confined in N-Doped Porous Branched Carbon Nanotubes for Lithium-Ion Batteries

doi:10.1007/s40820-019-0259-z

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	Cobalt Sulfide Confined in N-Doped Porous Branched Carbon Nanotubes for Lithium-Ion Batteries
	Zhou, Yongsheng; Zhu, Yingchun; Xu, Bingshe; Zhang, Xueji; Al-Ghanim, Khalid A.; Mahboob, Shahid
	2019-03-29
Source Publication	NANO-MICRO LETTERS
ISSN	2311-6706
Volume	11 Issue:1
Subtype	Article
Abstract	HighlightsA novel hierarchical structure constructed by encapsulating cobalt sulfide nanowires within nitrogen-doped porous branched carbon nanotubes (NBNTs) is designed for lithium-ion batteries.The unique hierarchical Co9S8@NBNT electrode displayed a reversible specific capacity of 1310mAhg(-1) at a current density of 0.1Ag(-1). AbstractLithium-ion batteries (LIBs) are considered new generation of large-scale energy-storage devices. However, LIBs suffer from a lack of desirable anode materials with excellent specific capacity and cycling stability. In this work, we design a novel hierarchical structure constructed by encapsulating cobalt sulfide nanowires within nitrogen-doped porous branched carbon nanotubes (NBNTs) for LIBs. The unique hierarchical Co9S8@NBNT electrode displayed a reversible specific capacity of 1310mAhg(-1) at a current density of 0.1Ag(-1), and was able to maintain a stable reversible discharge capacity of 1109mAhg(-1) at a current density of 0.5Ag(-1) with coulombic efficiency reaching almost 100% for 200 cycles. The excellent rate and cycling capabilities can be ascribed to the hierarchical porosity of the one-dimensional Co9S8@NBNT internetworks, the incorporation of nitrogen doping, and the carbon nanotube confinement of the active cobalt sulfide nanowires offering a proximate electron pathway for the isolated nanoparticles and shielding of the cobalt sulfide nanowires from pulverization over long cycling periods.
Keyword	Lithium-ion batteries Nitrogen doping Cobalt sulfide Branched carbon nanotubes
DOI	10.1007/s40820-019-0259-z
Language	英语
WOS Research Area	Science & Technology - Other Topics ; Materials Science ; Physics
Publisher	SHANGHAI JIAO TONG UNIV PRESS
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27255
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Zhou, Yongsheng,Zhu, Yingchun,Xu, Bingshe,et al. Cobalt Sulfide Confined in N-Doped Porous Branched Carbon Nanotubes for Lithium-Ion Batteries[J]. NANO-MICRO LETTERS,2019,11(1).
APA	Zhou, Yongsheng,Zhu, Yingchun,Xu, Bingshe,Zhang, Xueji,Al-Ghanim, Khalid A.,&Mahboob, Shahid.(2019).Cobalt Sulfide Confined in N-Doped Porous Branched Carbon Nanotubes for Lithium-Ion Batteries.NANO-MICRO LETTERS,11(1).
MLA	Zhou, Yongsheng,et al."Cobalt Sulfide Confined in N-Doped Porous Branched Carbon Nanotubes for Lithium-Ion Batteries".NANO-MICRO LETTERS 11.1(2019).

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