A modified PVDF-HFP/PMMA crosslinked co-polymer for high-performance all-solid-state lithium metal batteries  

作　　者：Sijia Wang Liang He Mengting Wang Xingtong Guo Xiangyun Qiu Shoudong Xu Petr Senin Ting Bian Tao Wei 

机构地区：[1]School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang,212003,China [2]Power&Energy Storage System Research Center,College of Mechanical and Electrical Engineering,Qingdao University,Qingdao,266071,China [3]College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan,030024,China [4]Institute of Mechanics and Power Engineering,Ogarev Mordovia State University,Saransk,430005,Russia

出　　处：《Particuology》2024年第10期203-210,共8页颗粒学报（英文版）

基　　金：supported by National Natural Science Foundation of China(grant Nos.21701083,22179054);The Ministry of Science and Technology of the People's Republic of China(grant No.G2023014022L);Jiangsu Provincial Key Research and Development Program(grant No.BZ2023010).

摘　　要：For all-solid-state lithium batteries(ASSLBs),polymer-blended solid composite electrolytes(SCEs)have drawn wide interest owing to their significance in improving the interfacial solid-solid contacts and inhibiting the growth of lithium dendrites.In this work,SCEs based on PVDF-HFP/PMMA matrix containing MOFs(NH2-MIL-53(Al))and LiTFSI were designed and synthesized employing an easy solution casting method.The synthesized samples were examined by XRD,SEM,EDS,and electrochemical tests.It was found that MPP-2 SCE not only has excellent ionic conductivity at 60℃ of 5.54×10^(−4) S cm^(−1),but also exhibits superior interfacial compatibility in Li||Li symmetric batteries,which can constantly cycle for about 800 h at 0.1 mA cm^(−2) with no short-circuiting.The assembled Li|MPP-2|LiFePO4 cell exhibited a first discharge specific capacity of up to 157.1 mAh g^(−1) at 60℃ and 0.2 C.This work may help to further advance the progress of ASSLBs in the future.

关 键 词：NH_(2)-MIL-53(AI) All solid-state lithium batteries(ASSLBs) PMMA PVDF-HFP Solid composite electrolytes(SCEs) 

分 类 号：TM912[电气工程—电力电子与电力传动]