In-Situ Intermolecular Interaction in Composite Polymer Electrolyte for Ultralong Life Quasi-Solid-State Lithium Metal Batteries

被引:158
作者
He, Kangqiang [1 ,2 ]
Cheng, Samson Ho-Sum [1 ]
Hu, Jieying [3 ]
Zhang, Yangqian [2 ]
Yang, Huiwen [1 ]
Liu, Yingying [5 ]
Liao, Wenchao [1 ,4 ]
Chen, Dazhu [1 ]
Liao, Chengzhu [4 ]
Cheng, Xin [4 ]
Lu, Zhouguang [4 ]
He, Jun [3 ]
Tang, Jiaoning [1 ]
Li, Robert K. Y. [2 ]
Liu, Chen [1 ]
机构
[1] Shenzhen Univ, Coll Mat Sci & Engn, Guangdong Res Ctr Interfacial Engn Funct Mat, Shenzhen Key Lab Polymer Sci & Technol, Shenzhen 518060, Peoples R China
[2] City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China
[3] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
[4] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Solid State Batteries, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Peoples R China
[5] Chinese Acad Sci, Inst Intelligent Machines, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
基金
中国国家自然科学基金;
关键词
batteries; electrochemistry; interfaces; lithium; ring-opening polymerization; IONIC-CONDUCTIVITY; DENDRITE-FREE; ELECTROCHEMICAL PERFORMANCE; ETHYLENE CARBONATE; MASS-SPECTROMETRY; PLASTICIZER; ANODE;
D O I
10.1002/anie.202103403
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Solid-state lithium metal batteries built with composite polymer electrolytes using cubic garnets as active fillers are particularly attractive owing to their high energy density, easy manufacturing and inherent safety. However, the uncontrollable formation of intractable contaminant on garnet surface usually aggravates poor interfacial contact with polymer matrix and deteriorates Li+ pathways. Here we report a rational designed intermolecular interaction in composite electrolytes that utilizing contaminants as reaction initiator to generate Li+ conducting ether oligomers, which further emerge as molecular cross-linkers between inorganic fillers and polymer matrix, creating dense and homogeneous interfacial Li+ immigration channels in the composite electrolytes. The delicate design results in a remarkable ionic conductivity of 1.43x10(-3) S cm(-1) and an unprecedented 1000 cycles with 90 % capacity retention at room temperature is achieved for the assembled solid-state batteries.
引用
收藏
页码:12116 / 12123
页数:8
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