首页|A modified PVDF-HFP/PMMA crosslinked co-polymer for high-performance all-solid-state lithium metal batteries
A modified PVDF-HFP/PMMA crosslinked co-polymer for high-performance all-solid-state lithium metal batteries
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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 con-taining 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 x 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.
School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China
Power & Energy Storage System Research Center,College of Mechanical and Electrical Engineering,Qingdao University,Qingdao 266071,China
College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,China
Institute of Mechanics and Power Engineering,Ogarev Mordovia State University,Saransk,430005,Russia
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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaMinistry of Science and Technology of the People's Republic of ChinaJiangsu Provincial Key Research and Development Program
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