Journal
ADVANCED ENERGY MATERIALS
Volume 11, Issue 2, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202000648
Keywords
garnet solid electrolytes; ionic conductivity; Li7La3Zr2O12; solid-state batteries
Categories
Funding
- National Key Research and Development Program of China [2017YFB0102000, 2018YFC1901605]
- National Postdoctoral Program for Innovative Talents [BX201600192]
- Central South University Postdoctoral Foundation [140050018]
- Hunan Provincial Science and Technology Plan [2017TP1001]
- National Natural Science Foundation of China [U19A2019, 51622406, 21673298, 51904342]
- Development and Reform Commission of Hunan Province [2017-01]
- China Postdoctoral International Postdoctoral Exchange Fellowship Program (Talent-Introduction Program)
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This article discusses the importance of all-solid-state lithium batteries in the field of energy storage, explores the challenges faced by garnet-type solid electrolytes, and proposes prospective developments and alternative approaches to solving the issues of solid-state electrolytes.
High-capacity cathodes and anodes in energy storage area are required for delivering high energy density due to the ever-increasing demands in the applications of electric vehicles and power grids, which suffer from significant safety concerns and poor cycling stability at the current stage. All-solid-state lithium batteries (ASSLBs) have been considered to be particularly promising within the new generation of energy storage, owing to the superiority of safety, wide potential window, and long cycling life. As the key component in ASSLBs, individual solid electrolytes that can meet practical application standards are very rare due to poor performance. To the present day, numerous research efforts have been expended to find applicable solid-state electrolytes and tremendous progress has been achieved, especially for garnet-type solid electrolytes. Nevertheless, the garnet-type solid electrolyte is still facing some crucial dilemmas. Hence, the issues of garnet electrolytes' ionic conductivity, the interfaces between electrodes and garnet solid electrolytes, and application of theoretical calculation on garnet electrolytes are focuses in this review. Furthermore, prospective developments and alternative approaches to the issues are presented, with an aim to improve understanding of garnet electrolytes and promote their practical applications in solid-state batteries.
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