In situ formation of a bifunctional interlayer enabled by a conversion reaction to initiatively prevent lithium dendrites in a garnet solid electrolyte

doi:10.1039/c8ee03390k

	In situ formation of a bifunctional interlayer enabled by a conversion reaction to initiatively prevent lithium dendrites in a garnet solid electrolyte
	Fu, Jiamin1,2,3 ; Yu, Pengfei 1; Zhang, Nian 1; Ren, GuoXi 1,3; Zheng, Shun 1,3; Huang, Wencheng 1,3; Long, Xinghui 1,3; Li, Hong 4,5; Liu, Xiaosong1,2,5
	2019-04
发表期刊	ENERGY & ENVIRONMENTAL SCIENCE (IF:32.4[JCR-2023],34.5[5-Year])
ISSN	1754-5692
卷号	12 期号:4 页码:1404-1412
发表状态	已发表
DOI	10.1039/c8ee03390k
摘要	Adopting inorganic solid electrolytes (ISEs) is a promising approach to assemble batteries using Li metal anodes because of their superior Li-ion conductivity and high mechanical strength. This approach greatly improves the energy density and the safety of batteries. However, lithium dendrites still can pierce the bare ISE because of inhomogeneous current distributions at interfaces, leading to serious short circuits. This work proposes to reduce the interfacial resistance and prevent lithium dendrite growth simultaneously through in situ formation of interlayers enabled by a conversion reaction of MoS2 layers coated on a bare Li6.5La3Zr1.5Ta0.5O12 (LLZO) pellet. The interfacial resistance is reduced to only 14 cm(2), with the overpotential decreasing notably. The critical current density of cells is improved from 0.7 mA cm(-2) to 2.2 mA cm(-2). Furthermore, short circuits are significantly suppressed above the critical current density with the potential diverging quickly. The cell can be recovered to some extent by applying an inverse potential for a short time. The comparison between XPS and XAS measurements reveals that the nanoscale thin MoS2 layer in contact with the Li anode can be converted into an interlayer composed of Mo and Li2S through the conversion reaction. The sluggish kinetics of the conversion reaction resulting from the poor electronic conductivity makes the in situ-formed interlayer kinetically stable, which can hinder further reaction of MoS2 with Li effectively. Moreover, the in situ reaction could suppress the local tip electric field effect efficiently and make the current distribution more even. This study provides a new strategy to optimize the interface of anodes by screening for more candidates which undergo a conversion reaction.
收录类别	SCI ; SCIE ; EI
语种	英语
资助项目	National Natural Science Foundation of China[21473235] ; National Natural Science Foundation of China[11227902] ; National Natural Science Foundation of China[21503263] ; National Natural Science Foundation of China[U1632269]
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
WOS类目	Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
WOS记录号	WOS:000465275800020
出版者	ROYAL SOC CHEMISTRY
EI入藏号	20191606798330
EI主题词	Anodes ; Electric current distribution measurement ; Electric field effects ; Lanthanum compounds ; Layered semiconductors ; Lithium compounds ; Lithium-ion batteries ; Molybdenum compounds ; Potentiometric sensors ; Reaction kinetics ; Solid electrolytes ; Solid-State Batteries ; Tantalum compounds ; Zirconium compounds
EI分类号	Lithium and Alloys:542.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Electron Tubes:714.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Electric Variables Measurements:942.2
WOS关键词	MOS2 ; INTERFACE ; STABILITY ; GROWTH ; LAYER ; LI7LA3ZR2O12 ; INTERPHASE ; MECHANISMS ; RESISTANCE ; CONDUCTION
原始文献类型	Article
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/37517
专题	物质科学与技术学院_硕士生物质科学与技术学院_特聘教授组_刘啸嵩组
通讯作者	Zhang, Nian; Liu, Xiaosong
作者单位	1.Chinese Acad Sci, SIMIT, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 5.Tianmu Lake Inst Adv Energy Storage Technol, Liyang City 213300, Jiangsu, Peoples R China
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Fu, Jiamin,Yu, Pengfei,Zhang, Nian,et al. In situ formation of a bifunctional interlayer enabled by a conversion reaction to initiatively prevent lithium dendrites in a garnet solid electrolyte[J]. ENERGY & ENVIRONMENTAL SCIENCE,2019,12(4):1404-1412.
APA	Fu, Jiamin.,Yu, Pengfei.,Zhang, Nian.,Ren, GuoXi.,Zheng, Shun.,...&Liu, Xiaosong.(2019).In situ formation of a bifunctional interlayer enabled by a conversion reaction to initiatively prevent lithium dendrites in a garnet solid electrolyte.ENERGY & ENVIRONMENTAL SCIENCE,12(4),1404-1412.
MLA	Fu, Jiamin,et al."In situ formation of a bifunctional interlayer enabled by a conversion reaction to initiatively prevent lithium dendrites in a garnet solid electrolyte".ENERGY & ENVIRONMENTAL SCIENCE 12.4(2019):1404-1412.