Circumferential Li metal deposition at high rates enabled by the synergistic effect of a lithiophilic and ionic conductive network

doi:10.1039/d1ta10257e

	Circumferential Li metal deposition at high rates enabled by the synergistic effect of a lithiophilic and ionic conductive network
	Zheng, Nan 1,2,3; Liang, Chao2 ; Wu, Cong2 ; Zhang, Xun2 ; Zhai, Wenbo2 ; Liu, MingXian 1; Wei, Hengsheng 1; Zhang, Chang2 ; Dong, Lei2 ; Yu, Yi2 ; Liu, Wei2 ; Yao, Lei 1
	2022-02-04
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A (IF:10.7[JCR-2023],10.8[5-Year])
ISSN	2050-7488
EISSN	2050-7496
发表状态	已发表
DOI	10.1039/d1ta10257e
摘要	Combining Li-metal anodes with high-energy cathodes can hopefully produce high-energy-density batteries (similar to 500 W h kg(-1)). However, practical applications of Li-metal anodes are limited by irregular Li growth, which leads to a short cycling life and serious security risks. Herein, we report a flexible network consisting of Li0.33La0.56TiO3/carbon nanowires coated with an Au layer (LLTO/C@Au) to work as a Li metal host. The LLTO nanocrystals encapsulated in carbon increase the Li ion conductivity and flexibility of the network. Moreover, the lithiophilic Au layer leads to a feasible and homogeneous Li metal deposition at the surface, which further boosts the Li ion migration in the nanowires. As a result, the diffusion coefficient of the lithiophilic and ionic conductive network (LLTO/C@Au) is much higher than that of the only ionic conductive network (LLTO/C) and the only lithiophilic network (C@Au). Such synergistic effects of the lithiophilic and ionic conductive network on simultaneously optimizing the nucleation, transportation, and accumulation of Li enable circumferential Li metal plating/stripping at high rates. The LLTO/C@Au-Li symmetrical cell can run at a high rate of 20 mA cm(-2) for 150 cycles with a capacity of 2 mA h cm(-2) and at a rate of 2 mA cm(-2) for 500 h with a large capacity of 10 mA h cm(-2). This work sheds light on the synergistic mechanism of a lithiophilic and ionic conductive network on the Li metal deposition, which offers a new perspective for designing advanced Li-metal batteries with low negative/positive ratio.
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收录类别	SCI ; EI ; SCIE
语种	英语
资助项目	Shenzhen Government's Plan of Science and Technology[JCYJ20190808121407676] ; Natural Science Foundation of Guangdong[2020A1515011127] ; National Key Research and Development Program[2019YFA0210600] ; National Natural Science Foundation of China[21805185] ; Shanghai Rising Star Program[20QA1406600] ; Center for High Resolution Electron Microscopy (CEM), SPST of ShanghaiTech University[EM02161943]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000755234600001
出版者	ROYAL SOC CHEMISTRY
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/159555
专题	物质科学与技术学院_博士生物质科学与技术学院_PI研究组_于奕组物质科学与技术学院_PI研究组_刘巍组
通讯作者	Yao, Lei
作者单位	1.Shenzhen Univ, Coll Mat Sci & Engn, Guangdong Res Ctr Interfacial Engn Funct Mat, Shenzhen Key Lab Special Funct Mat,Shenzhen Engn, Shenzhen 518060, Peoples R China 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 3.Hanshan Normal Univ, Chaozhou 521041, Peoples R China
第一作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Zheng, Nan,Liang, Chao,Wu, Cong,et al. Circumferential Li metal deposition at high rates enabled by the synergistic effect of a lithiophilic and ionic conductive network[J]. JOURNAL OF MATERIALS CHEMISTRY A,2022.
APA	Zheng, Nan.,Liang, Chao.,Wu, Cong.,Zhang, Xun.,Zhai, Wenbo.,...&Yao, Lei.(2022).Circumferential Li metal deposition at high rates enabled by the synergistic effect of a lithiophilic and ionic conductive network.JOURNAL OF MATERIALS CHEMISTRY A.
MLA	Zheng, Nan,et al."Circumferential Li metal deposition at high rates enabled by the synergistic effect of a lithiophilic and ionic conductive network".JOURNAL OF MATERIALS CHEMISTRY A (2022).