Metal-organic-framework-derived N-C-Co film as a shuttle-suppressing interlayer for lithium sulfur battery

doi:10.1016/j.cej.2017.11.180

	Metal-organic-framework-derived N-C-Co film as a shuttle-suppressing interlayer for lithium sulfur battery
	Wang, Jianing 1; Wu, Tian 1; Zhang, Sanpei 1; Gu, Sui 1; Jin, Jun ; Wen, Zhaoyin
刊名	CHEMICAL ENGINEERING JOURNAL
	2018
卷号	334 页码:2356
关键词	Metal-organic-framework-derived Porous nitrogen-carbon-cobalt interlayer Physical blocking Physical and chemical adsorption Lithium sulfur battery
ISSN号	1385-8947
DOI	10.1016/j.cej.2017.11.180
英文摘要	Owing to its high theoretical capacity and energy density, lithium sulfur battery represents one of the most promising candidates for future energy storage. However, the dissolution of polysulfide in the electrodes results in shuttle effect and rapid fading of capacity, which impedes practical application of lithium sulfur battery. To inhibit the shuttle effect, in this work, an integrated, highly conductive metal-organic-framework-derived porous nitrogen-carbon-cobalt (N-C-Co) interlayer is designed and prepared to suppress polysulfides lost in electrolyte. Owing to the novel MOFs precursor, N-C-Co composite possesses hierarchical pores, pyridinic and pyrrolic nitrogen groups. This coating interlayer acts effectively through three aspects: as a physical blocking layer to prevent most polysulfides from dissolving out of the cathode, physical and chemical adsorption to confine free polysulfides in the electrolyte, and a second pseudo-upper current collector to enhance the utilization of sulfur. As a result, the improvement of battery performance is achieved by the well-designed interlayer. The initial discharge capacity of composite cathode with the interlayer is 1216.9 mAh g(-1) at 1C and can retain capacity of 660.3 mAh g(-1) after 250 cycles at the sulfur loading of 1.5 mg cm(-2). At the same time, the Coulombic efficiency maintains above 99% during cycling, demonstrating an effective inhibition of the shuttle effect. Even at a high sulfur mass loading of 5.2 mg cm(-2), the battery can still deliver 678.8 mAh g(-1) after 50 cycles and an areal discharge capacity is of above 3.53 mAh cm(-2).
学科主题	Engineering, Environmental ; Engineering, Chemical
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000418533400236
资助机构	This work was supported by the National Natural Science Foundation of China (Project No. 51402330, 51772315, 51472261 and 51372262) and Key Fundamental Project from Science and Technology Commission of Shanghai Municipality (Project No. 15DZ2281200). ; This work was supported by the National Natural Science Foundation of China (Project No. 51402330, 51772315, 51472261 and 51372262) and Key Fundamental Project from Science and Technology Commission of Shanghai Municipality (Project No. 15DZ2281200).
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24483]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianing,Wu, Tian,Zhang, Sanpei,et al. Metal-organic-framework-derived N-C-Co film as a shuttle-suppressing interlayer for lithium sulfur battery[J]. CHEMICAL ENGINEERING JOURNAL,2018,334:2356, 2362.
APA	Wang, Jianing,Wu, Tian,Zhang, Sanpei,Gu, Sui,Jin, Jun,&Wen, Zhaoyin.(2018).Metal-organic-framework-derived N-C-Co film as a shuttle-suppressing interlayer for lithium sulfur battery.CHEMICAL ENGINEERING JOURNAL,334,2356.
MLA	Wang, Jianing,et al."Metal-organic-framework-derived N-C-Co film as a shuttle-suppressing interlayer for lithium sulfur battery".CHEMICAL ENGINEERING JOURNAL 334(2018):2356.