Stable operation of polymer electrolyte-solid-state batteries via lonepair electron fillers  

作　　者：Hongbin Liu Qing Sun Jun Cheng Hongqiang Zhang Xiao Xu Yuanyuan Li Zhen Zeng Yue Zhao Deping Li Jingyu Lu Lijie Ci 

机构地区：[1]State Key Laboratory of Advanced Welding and Joining,School of Materials Science and Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China [2]School of Science,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China [3]Research Center for Carbon Nanomaterials,Key Laboratory for Liquid–Solid Structural Evolution&Processing of Materials(Ministry of Education),School of Materials Science and Engineering,Shandong University,Jinan 250061,China [4]College of Materials and Chemistry,China Jiliang University,Hangzhou 310018,China

出　　处：《Nano Research》2023年第11期12727-12737,共11页纳米研究（英文版）

基　　金：supported by School Research Startup Expenses of Harbin Institute of Technology(Shenzhen)(Nos.DD29100027 and DD45001022);the National Natural Science Foundation of China(No.52002094);Shenzhen Science and Technology Program(Nos.JCYJ20210324121411031,JSGG202108021253804014,and RCBS20210706092218040);the Open Fund of the Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials(No.asem202107).

摘　　要：Due to the increasing demand and wide applications of lithium-ion batteries,higher requirements have been placed on the energy density and safety.Polymer solid-state electrolytes have gained significant popularity due to their excellent interface compatibility and safety.However,their applications have been greatly restricted by the high crystallinity at room temperature,which hinders the transport of lithium ions.Herein,we utilize inorganic tubular fillers with abundant lone-pair atoms to reduce the crystallinity of the polyethylene oxide(PEO)solid-state electrolyte membrane and improve its ionic conductivity at room temperature,enabling stable operation of the battery.The tubular lone-pair-rich inorganic fillers play a key role in providing avenues for both internal and external charge transportation.The surface lone-pair electrons facilitate the dissociation and transport of lithium ions,while the internally tubular electron-rich layer attracts ions into the cavities,further enhancing the ion transport.After 100 cycles at room temperature,the lithium battery loaded with this solid-state electrolyte membrane delivers a specific capacity of 141.6 mAh·g−1,which is 51.3%higher compared to the membrane without the fillers.

关 键 词：nanotube filler polymer electrolyte ion transport room temperature(RT)operation 

分 类 号：TM912[电气工程—电力电子与电力传动]