Efficient polysulfide blocker from conductive niobium nitride@graphene for Li-S batteries

doi:10.1016/j.jechem.2019.10.018

IMR OpenIR

	Efficient polysulfide blocker from conductive niobium nitride@graphene for Li-S batteries
	Shi, Huifa; Sun, Zhenhua; Lv, Wei; Xiao, Shujie; Yang, Huicong; Shi, Ying; Chen, Ke; Wang, Shaogang; Zhang, Bingsen; Yang, Quan-Hong; Li, Feng
	2020-06-01
Source Publication	JOURNAL OF ENERGY CHEMISTRY
Volume	45 Pages:135-141
Abstract	Lithium sulfur batteries are one of the most promising alternative electrochemical systems, but their practical applications are largely hindered by the serious shuttling problems and sluggish redox kinetics. Here, the conductive and polar niobium nitride (NbN) is in-situ introduced onto graphene with ultrasmall size and high dispersion, and their composite is used to construct an efficient lithium polysulfide blocking layer. The graphene helps to construct highly conductive pathways, and niobium nitride serves as the sulfiphilic sites to chemically adsorb the migrating lithium polysulfides and catalyze their redox conversion. Hence, the cells with the NbN/G interlayers exhibit a long cycle life with a lower capacity decay of 0.096%/cycle at 1 C for 300 cycles and high rate capability of 937 mAh g(-1) at 2 C. Further coupling with a sulfur/carbon nanofiber electrode, the cell with an ultra-high sulfur loading of 10.8 mg cm(-2) delivers an areal capacity of 12.5 mAh cm(-2) at 0.1 C. (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.
DOI	10.1016/j.jechem.2019.10.018
WOS ID	WOS:000520405600020
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82793
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Shi, Huifa,Sun, Zhenhua,Lv, Wei,et al. Efficient polysulfide blocker from conductive niobium nitride@graphene for Li-S batteries[J]. JOURNAL OF ENERGY CHEMISTRY,2020,45:135-141.
APA	Shi, Huifa.,Sun, Zhenhua.,Lv, Wei.,Xiao, Shujie.,Yang, Huicong.,...&Li, Feng.(2020).Efficient polysulfide blocker from conductive niobium nitride@graphene for Li-S batteries.JOURNAL OF ENERGY CHEMISTRY,45,135-141.
MLA	Shi, Huifa,et al."Efficient polysulfide blocker from conductive niobium nitride@graphene for Li-S batteries".JOURNAL OF ENERGY CHEMISTRY 45(2020):135-141.

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