黏土矿物以特殊的形貌结构,丰富的矿产资源及低廉价格作为固态聚合物电解质隔膜(SPEs)的功能改善材料效果明显。因黏土矿物表面丰富的含氧官能团可与聚合物基体之间相互作用,能够促进锂离子传导率,增加界面相容性、机械性及抑制锂枝晶方面均表现出优异的效果,使其成为构筑固态聚合物电解质的新型材料。从黏土矿物作为隔膜填料、隔膜涂层,构建层间离子传导网络等层面,在提高锂离子电性能的原理及机制,机械强度等方面进行了综述分析,并对未来高性能固态聚合物电解质隔膜的发展方向进行了展望。
Clay minerals exhibit significant effects as functional improvement materials in solid polymer electrolyte separators (SPEs) due to their unique morphological structure,abundant mineral resources,and low cost.Clay mineral surfaces are rich in oxygen-containing functional groups,which can interact with the polymer matrix to promote lithium-ion conductivity,improve interfacial compatibility,enhance mechanical properties,and inhibit lithium dendrite growth,making them novel materials for constructing solid polymer electrolytes.This paper reviewed and analyzed the principles and mechanisms of improving lithium-ion electrochemical performance,mechanical strength,etc.,from the perspectives of using clay minerals as separator fillers and separator coatings,as well as constructing interlayer ion conduction networks.It also prospected the future development directions of high-performance solid polymer electrolyte separators.
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基金资助
国家自然科学基金(52474138)
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