Phosphorus modulated porous CeO2 nanocrystallines for accelerated polysulfide catalysis in advanced Li-S batteries

doi:10.1016/j.jmst.2022.06.004

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	Phosphorus modulated porous CeO2 nanocrystallines for accelerated polysulfide catalysis in advanced Li-S batteries
	Tao, Xuefeng 2; Yang, Zhao 1; Cheng, Menghao 2; Yan, Rui 2; Chen, Fan 2; Cao, Sujiao 2,3; Li, Shuang 2; Ma, Tian 2,3; Cheng, Chong 2; Yang, Wei 2
刊名	Journal of Materials Science and Technology
	2022-12-20
卷号	131 页码:212-220
关键词	Catalysis Cathodes Cerium oxide Kinetics Lithium batteries Lithium compounds Metals Morphology Nanocrystals Polysulfides Precipitation (chemical) Reaction intermediates Reaction kinetics Catalytic materials CeO 2 Lithium/sulfur batteries Metal-oxide Nanocrystallines P-modulated porous CeO2 Polysulphide catalytic material Polysulphides Redox process Shuttle effect
ISSN号	1005-0302
DOI	10.1016/j.jmst.2022.06.004
英文摘要	The insulating nature of sulfur species, sluggish reaction kinetics, and uncontrolled dissolution of lithium polysulfide (LiPS) intermediates during the complex and multiphase sulfur redox process, have severely inhibited the applications of Li-S batteries. In this study, we report a rational strategy to accelerate the polysulfide catalysis via constructing phosphorus modulated porous CeO2 (P-CeO2) for advanced Li-S batteries. The morphology and surface analysis demonstrate that the P-CeO2 consists of abundant P-modulated porous CeO2 nanocrystallines. The battery performance reveals that the introduction of P will lead to an improved initial capacity of 1027 mA h g−1 than that of bare CeO2 (895.7 mA h g−1) at 0.2 C. In addition, the P-CeO2 cathode can maintain a low capacity decay ratio of 0.10% per cycle after 500 cycles at 1.0 C. The coin battery tests suggest that the P-CeO2 cathode presents faster oxidation-reduction kinetics of LiPS and quick diffusion of Li+ ions. Meanwhile, the studies of redox processes and chemical interactions of LiPS have demonstrated the P-CeO2 cathode displays stronger adsorption of Li2S6, higher redox peak current, and earlier precipitation of Li2S than the bare CeO2. This study demonstrates for the first time that the P-modulation of metal oxide surface can simultaneously promote the catalytic reaction kinetics and chemical interaction of LiPS. We anticipate that this P-modulation method can be extended to many other nanostructured metal catalytic sites for developing affordable advanced Li-S batteries. © 2022
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Chinese Society of Metals
WOS记录号	WOS:000827835900004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159399]
专题	兰州理工大学
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu; 610065, China; 3.Department of Ultrasound, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu; 610041, China
推荐引用方式 GB/T 7714	Tao, Xuefeng,Yang, Zhao,Cheng, Menghao,et al. Phosphorus modulated porous CeO2 nanocrystallines for accelerated polysulfide catalysis in advanced Li-S batteries[J]. Journal of Materials Science and Technology,2022,131:212-220.
APA	Tao, Xuefeng.,Yang, Zhao.,Cheng, Menghao.,Yan, Rui.,Chen, Fan.,...&Yang, Wei.(2022).Phosphorus modulated porous CeO2 nanocrystallines for accelerated polysulfide catalysis in advanced Li-S batteries.Journal of Materials Science and Technology,131,212-220.
MLA	Tao, Xuefeng,et al."Phosphorus modulated porous CeO2 nanocrystallines for accelerated polysulfide catalysis in advanced Li-S batteries".Journal of Materials Science and Technology 131(2022):212-220.