Sulfonated poly(aryl ether ketone sulfone)modified by polyoxometalates LaW_(10) clusters for proton exchange membranes with high proton conduction performance  

作　　者：Meng-Long Liu Xu Han Wen-Wen He Feng-Yu Jiang Fang Ji Wang-Wang Shen Tao Zhou Jing-Mei Xu Ya-Qian Lan 

机构地区：[1]School of Chemistry and Life Science,Changchun University of Technology,Changchun 130012,China [2]Advanced Institute of Materials Science,Changchun University of Technology,Changchun 130012,China [3]School of Chemistry,South China Normal University,Guangzhou 510006,China

出　　处：《Tungsten》2024年第2期454-464,共11页钨科技（英文）

基　　金：financially supported by the National Natural Science Foundation of China(No.22271022);the Natural Science Foundation of Jilin Province(No.YDZJ202201ZYTS342);supported by the China Scholarship Council(CSC No.201802335014).

摘　　要：Polyoxometalates(POMs)are classified as solid superacids which can exhibit notable proton conductivity,making them a promising functional inorganic filler for enhancing the proton conductivity of proton exchange membranes(PEMs).In this study,a series of hybrid membranes were obtained by molecular-level hybridization of Weakley-type POM Na_(7)H_(2)LaW_(10)O_(36)(LaW_(10))clusters into sulfonated poly(aryl ether ketone sulfone)(SPAEKS).All hybrid membranes exhibited greater proton conductivity than the pristine membrane in the 30–80℃temperature range.When the doping amount of LaW 10 reached 7 wt.%,the proton conductivity of M-LaW 10^(-7)achieved 64 mS·cm^(−1)at 80℃.Lanthanide ions'high coordination number property and variable coordination environment can aid to attract more water molecules from the environment.LaW 10 and these bound water can construct denser hydrogen bonds with–SO_(3)H of SPAEKS.These intensive hydrogen bonds will facilitate the constitution of more continuous proton transport channels,and improve the proton conductivity of the hybrid membrane.This work off ers a fresh approach to using POMs containing rare-earth components in PEMs.

关 键 词：POLYOXOMETALATES Rare-earth elements Sulfonated poly(arylene ether ketone sulfone) Proton exchange membranes 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TB383.2[一般工业技术—材料科学与工程]