Ion Hopping: Design Principles for Strategies to Improve Ionic Conductivity for Inorganic Solid Electrolytes

Wang, Caiyun, Xu, Bin, Zhang, Xuan, Sun, Wenping, Chen, Jian, Pan, Hongge, Yan, Mi and Jiang, Yinzhu (2022) Ion Hopping: Design Principles for Strategies to Improve Ionic Conductivity for Inorganic Solid Electrolytes. Small, 18 (43). p. 2107064. ISSN 1613-6810

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Solid electrolyte has been considered as an ideal substitution of liquid electrolyte, by avoiding the potential hazards of volatilization, flammability and explosion for liquid electrolyte based rechargeable batteries. However, there are significant performance gaps to be bridged between solid electrolytes with liquid electrolytes, one with the particular importance is the ionic conductivity which is highly dependent on the material types and structures. In this review, we re-visit the general physical image of ion hopping in the crystalline structure, by highlighting two main kernels that impact ion migration: ion hopping pathways and skeletons interaction. We then systematically summarize the universal strategies to effectively improve ionic conductivity of inorganic solid electrolytes: (1) constructing rapid diffusion pathways for mobile ions; (2) reducing resistance of the surrounding potential field. The scoped strategies offer an exclusive view on the working principle of ions movements regardless of the ion species, thus providing a comprehensive guidance for the future exploitation of solid electrolytes.

Item Type: Article
Additional Information: Funding information: National Key Research and Development Program. Grant Number: 2019YFE0111200 National Natural Science Foundation of China. Grant Number: 51722105 Zhejiang Provincial Natural Science Foundation of China. Grant Number: LR18B030001 Fundamental Research Funds for the Central Universities. Grant Number: 2021FZZX001-09
Uncontrolled Keywords: batteries, ion hopping, ionic conductivity, ion transport mechanisms, solid electrolytes
Subjects: H300 Mechanical Engineering
H600 Electronic and Electrical Engineering
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 04 Apr 2022 11:13
Last Modified: 03 Apr 2023 03:30

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