Lithium batteries have been widely used in various fields of society.It is noted that the rapid de-velopment of the new energy vehicle industry puts forward higher requirements for the safety and energy density of lithium batteries.However,currently commercial lithium batteries generally use liquid electro-lytes composed of carbonate organic solvents and lithium salts,which exhibits potential safety hazards such as easy leakage,flammability and even explosion,seriously hindering the development of high-performance lithium batteries.Compared with liquid electrolytes,polymer solid electrolytes can effectively overcome the above-mentioned defects of liquid electrolytes,and possess the advantages of good safety and high battery energy density.The polymer matrix material is the key to polymer solid electrolytes,and the development of high-performance polymer solid electrolytes has became the focus of systematic study by re-searchers.Based on this,the history and classification of polymer solid electrolytes were reviewed in this paper,focusing on research status,advantages/disadvantages and modification strategies of matrix materi-als such as polyethylene oxide(PEO)and its derivatives,polycarbonate,polyacrylonitrile(PAN),polysi-loxane(PDMS),polyvinylidene difluoride(PVDF),polymethacrylate(PMMA)and others.In addition,the organic-inorganic composite solid electrolytes were expounded.Finally,the development trend of poly-mer solid electrolytes were prospected.
关键词
锂电池/固态电解质/聚合物电解质/复合固态电解质
Key words
Lithium battery/Solid state electrolyte/Polymer electrolyte/Composite solid state electrolyte
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