With the emergence of exploration of non-conventional energy resources and development of energy storage devices, serious efforts on lithium (Li) based rechargeable solid electrolyte batteries (Li-SEBs) are attaining momentum due to their potential as a safe candidate to substitute state of the art conventionally existing flammable organic liquid electrolyte based Li-ion batteries (LIBs). However, Li-ion conduction in solid electrolytes (SEs) has been one of the major obstacles in large scale commercialization of next generation Li-SEBs. Here, in this Review, various challenges in realization of high performance Li-SEBs are highlighted and recent trends as well as strategies employed for the development of highly efficient SEs prepared via various synthesis routes, specifically focusing on ionic conductivity enhancement techniques for inorganic materials(including ceramics, glasses and glass-ceramics) and polymers based SEs are reviewed. The development of novel fabrication routes with controlled parameters and high performance temperature optimized SEs with stable electrolyte-electrode interfaces proposed for realizing highly efficient Li-SEBs.
Keywords: Solid electrolytes, Li-ion batteries, Solid state batteries, Ionic conductivity
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