CNTs@S composite as cathode for all-solid-state lithium-sulfur batteries with ultralong cycle life

doi:10.1016/j.jechem.2019.03.006

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	CNTs@S composite as cathode for all-solid-state lithium-sulfur batteries with ultralong cycle life
	Zhang, Qiang ; Huang, Ning ; Huang, Zhen ; Cai, Liangting ; Wu, Jinghua ; Yao, Xiayin
刊名	JOURNAL OF ENERGY CHEMISTRY
	2020
卷号	40 页码:151-155
关键词	ELECTRODE
DOI	10.1016/j.jechem.2019.03.006
英文摘要	The main challenges in development of traditional liquid lithium-sulfur batteries are the shuttle effect at the cathode caused by the polysulfide and the safety concern at the Li metal anode arose from the dendrite formation. All-solid-state lithium-sulfur batteries have been proposed to solve the shuttle effect and prevent short circuits. However, solid-solid contacts between the electrodes and the electrolyte increase the interface resistance and stress/strain, which could result in the limited electrochemical performances. In this work, the cathode of all-solid-state lithium-sulfur batteries is prepared by depositing sulfur on the surface of the carbon nanotubes (CNTs@S) and further mixing with Li10GeP2S12 electrolyte and acetylene black agents. At 60 degrees C, CNTs@S electrode exhibits superior electrochemical performance, delivering the reversible discharge capacities of 1193.3, 959.5, 813.1, 569.6 and 395.5 mAh g(-1) at the rate of 0.1, 0.5, 1, 2 and 5 C, respectively. Moreover, the CNTs@S is able to demonstrate superior high-rate capability of 660.3 mAh g(-1) and cycling stability of 400 cycles at a high rate of 1.0 C. Such uniform distribution of the CNTs, S and Li10GeP2S12 electrolyte increase the electronic and ionic conductivity between the cathode and the electrolyte hence improves the rate performance and capacity retention. (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
学科主题	Chemistry ; Energy & Fuels ; Engineering
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20281]
专题	2020专题
作者单位	1.Wu, JH 2.Yao, XY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, Qiang,Huang, Ning,Huang, Zhen,et al. CNTs@S composite as cathode for all-solid-state lithium-sulfur batteries with ultralong cycle life[J]. JOURNAL OF ENERGY CHEMISTRY,2020,40:151-155.
APA	Zhang, Qiang,Huang, Ning,Huang, Zhen,Cai, Liangting,Wu, Jinghua,&Yao, Xiayin.(2020).CNTs@S composite as cathode for all-solid-state lithium-sulfur batteries with ultralong cycle life.JOURNAL OF ENERGY CHEMISTRY,40,151-155.
MLA	Zhang, Qiang,et al."CNTs@S composite as cathode for all-solid-state lithium-sulfur batteries with ultralong cycle life".JOURNAL OF ENERGY CHEMISTRY 40(2020):151-155.