Mechanism Study on the Interfacial Stability of a Lithium Garnet-Type Oxide Electrolyte against Cathode Materials
Zhang, Nian1; Long, Xinghui1,5; Wang, Zhi2; Yu, Pengfei1; Han, Fudong3; Fu, Jiamin1,5; Ren, GuoXi1,5; Wu, Yanru1,5; Zheng, Shun1,5; Huang, Wencheng1,5; Wang, Chunsheng3; Li, Hong4,7; Liu, Xiaosong1,6,7
2018-11
Source PublicationACS APPLIED ENERGY MATERIALS
ISSN2574-0962
Volume1Issue:11Pages:5968-5976
Status已发表
DOI10.1021/acsaem.8b01035
AbstractAll-solid-state lithium-ion battery is considered to be one of the most promising next-generation battery technologies. Understanding the interfacial evolution of a solid electrolyte and a cathode electrode during mixing and sintering is of great importance and can provide guidance to avoid forming unwanted compounds and decrease the interfacial resistance. In this work, chemical compatibilities are investigated between a Ta-doped Li7La3Zr2O12 (LLZO) solid electrolyte and major commercial metal-oxide cathodes LiCoO2 (LCO) and Li(NiCoMn)(1/3)O-2 (NCM) through ball-milling and cosintering processes. As revealed by X-ray absorption spectroscopy and transmission electron microscopy, LLZO spontaneously covers the majority of the large LCO and NCM particles with a thickness of similar to 100 nm after ball milling. The thickness of LLZO layer on these cathodes decreases to about 10 nm after cosintering at 873 K, and an interfacial layer of approximately 3 nm is observed for NCM/LLZO. LCO shows a higher thermal stability than NCM. Density functional theory (DFT)-based simulations and electrochemical measurements suggest Ni-La and Ni-Li exchange could happen at the NCM/LLZO interface and Li can diffuse from the interface into NCM to occupy the Ni vacancy at high temperature. The Li depletion layer after diffusion at the interface induces the decomposition of LLZO and the formation of La2Zr2O7 and LaNiO3 interfacial layer.
KeywordGarnet-type oxide electrolyte Solid electrolyte Thermal stability Co-sintering Interface reaction
Indexed ByESCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[21473235] ; National Natural Science Foundation of China[11227902] ; National Natural Science Foundation of China[U1632269]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000458706700024
PublisherAMER CHEMICAL SOC
WOS KeywordSOLID-ELECTROLYTE ; ION BATTERY ; ELECTROCHEMICAL PERFORMANCE ; ARGYRODITE LI6PS5CL ; LICOO2 ; LI7LA3ZR2O12 ; 1ST-PRINCIPLES ; TEMPERATURE ; CHALLENGES ; MORPHOLOGY
Original Document TypeArticle
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/49013
Collection物质科学与技术学院_特聘教授组_刘啸嵩组
Corresponding AuthorLiu, Xiaosong
Affiliation1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Ctr Excellence Superconducting Elect, Shanghai 200050, Peoples R China
2.Univ Colorado, Renewable & Sustainable Energy Inst, Boulder, CO 80309 USA
3.Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA
4.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
7.Tianmu Lake Inst Adv Energy Storage Technol, Liyang City 213300, Jiangsu, Peoples R China
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Zhang, Nian,Long, Xinghui,Wang, Zhi,et al. Mechanism Study on the Interfacial Stability of a Lithium Garnet-Type Oxide Electrolyte against Cathode Materials[J]. ACS APPLIED ENERGY MATERIALS,2018,1(11):5968-5976.
APA Zhang, Nian.,Long, Xinghui.,Wang, Zhi.,Yu, Pengfei.,Han, Fudong.,...&Liu, Xiaosong.(2018).Mechanism Study on the Interfacial Stability of a Lithium Garnet-Type Oxide Electrolyte against Cathode Materials.ACS APPLIED ENERGY MATERIALS,1(11),5968-5976.
MLA Zhang, Nian,et al."Mechanism Study on the Interfacial Stability of a Lithium Garnet-Type Oxide Electrolyte against Cathode Materials".ACS APPLIED ENERGY MATERIALS 1.11(2018):5968-5976.
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