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Ni2P electrocatalysts decorated hollow carbon spheres as bi-functional mediator against shuttle effect and Li dendrite for Li-S batteries

文献类型：期刊论文

作者Yang, Shan2,3; Xiao, Ru3,4; Hu, Tianzhao3,5; Fan, Xialu3,4; Xu, Ruogu3,4; Sun, Zhenhua3,4; Zhong, Benhe2; Guo, Xiaodong2; Li, Feng1,3,4
刊名NANO ENERGY
出版日期2021-12-01
卷号90页码:12
ISSN号2211-2855
关键词Lithium-sulfur battery Bi-functional mediator Nickel phosphide Shuttle effect Lithium dendrite
DOI10.1016/j.nanoen.2021.106584
通讯作者Sun, Zhenhua(zhsun@imr.ac.cn) ; Guo, Xiaodong(xiaodong2009@scu.edu.cn) ; Li, Feng(fli@imr.ac.cn)
英文摘要Lithium-sulfur (Li-S) batteries are promising candidates for next-generation energy storage devices, while shuttle effect and Li dendrite growth severely obstruct the practical applications. Herein, well-dispersed Ni2P electrocatalysts decorated hollow carbon spheres (Ni2P-HCS) are constructed as high-efficiency bi-functional mediator for Li-S batteries. Benefiting from polar surface and high electrical conductivity, Ni2P-HCS possesses strong interaction and efficient electrocatalysis toward polysulfides. Moreover, regulated Li deposition behavior is realized on lithiated Ni2P-HCS surface ascribed to its lithiophilicity and as-formed mixed ion-electron conducting host composed of Li3P and Ni. As a result, the assembled Li-S full cells with Ni2P-HCS used as interlayer and Li host exhibit excellent rate capability (755.5 mAh g(-1) at 2 C) and long-term cycling stability (capacity fading rate of 0.05% per cycle at 1 C after 500 cycles). Importantly, high areal capacity (6.67 mAh cm(-2)) with high sulfur loading of 5.9 mg cm(-2) at low E/S ratio (6.8 mu L mg(-1)) is achieved. The loading coefficient and catalytic effectiveness value (CEV) are proposed to evaluate catalytic efficiency of electrocatalysts. This work exploits the potential of metal phosphides in concurrently solving challenges for S cathode and Li anode, and offers insight into developing high-efficiency electrocatalysts for advanced Li-S batteries.
资助项目National Natural Science Foundation of China[51972313] ; National Natural Science Foundation of China[52020105010] ; National Natural Science Foundation of China[51927803] ; National Key R&D Program of China[2016YFA0200100] ; National Key R&D Program of China[2016YFB0100100] ; Strategic Priority Research Program of Chinese Academy of Science[XDA22010602] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[Y201942] ; Liaoning Revitalization Talents Program[XLYC1908015] ; Liaoning Revitalization Talents Program[XLYC2007080] ; DNL Cooperation Fund, CAS[DNL202019]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者ELSEVIER
WOS记录号WOS:000708813000002
资助机构National Natural Science Foundation of China ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Science ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Liaoning Revitalization Talents Program ; DNL Cooperation Fund, CAS
源URL[http://ir.imr.ac.cn/handle/321006/166592]  
专题金属研究所_中国科学院金属研究所
通讯作者Sun, Zhenhua; Guo, Xiaodong; Li, Feng
作者单位1.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Sichuan Univ, Sch Chem Engn, Chengdu 610065, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
5.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Shan,Xiao, Ru,Hu, Tianzhao,et al. Ni2P electrocatalysts decorated hollow carbon spheres as bi-functional mediator against shuttle effect and Li dendrite for Li-S batteries[J]. NANO ENERGY,2021,90:12.
APA Yang, Shan.,Xiao, Ru.,Hu, Tianzhao.,Fan, Xialu.,Xu, Ruogu.,...&Li, Feng.(2021).Ni2P electrocatalysts decorated hollow carbon spheres as bi-functional mediator against shuttle effect and Li dendrite for Li-S batteries.NANO ENERGY,90,12.
MLA Yang, Shan,et al."Ni2P electrocatalysts decorated hollow carbon spheres as bi-functional mediator against shuttle effect and Li dendrite for Li-S batteries".NANO ENERGY 90(2021):12.

入库方式： OAI收割

来源：金属研究所

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