Superprotonic Conductivity of Guanidinium Organosulfonate Hydrogen-Bonded Organic Frameworks with Nanotube-Shaped Proton Transport Channels  

作　　者：Xu-Yong Chen Li-Hui Cao Xiang-Tian Bai Xiao-Jie Cao Dan Yang Yi-Da Gao 

机构地区：[1]Shaanxi Key Laboratory of Chemical Additives for Industry,College of Chemistry and Chemical Engineering,Shaanxi University of Science and Technology,Xi’an 710021,P.R.China

出　　处：《Precision Chemistry》2023年第10期608-615,共8页精准化学（英文）

基　　金：supported by the National Natural Science Foundation of China(22075169);the Shaanxi Fundamental Science Research Project for Chemistry and Biology(22JHQ026);the Starting Grants from Shaanxi University of Science and Technology(2016QNBJ-11).

摘　　要：Grasping proton transport pathways and mecha-nisms is vital for the application of fuel cell technology.Herein,we screened four guanidinium organosulfonate charge-assisted hydro-gen-bonded organic frameworks(HOFs),namely,GBBS,G3TSPHB,G4TSP,and G6HSPB,which possess high hydrogen-bonded density proton transport networks shaped like nanotubes.These materials were prepared by self-assembly through charge-assisted interactions between guanidinium cations and organo-sulfonate anions,as well as by host-guest regulation.At 80℃ and 93%RH,the proton conductivity of GBBS,G3TSPHB,G4TSP,and G6HSPB can reach 4.56×10^(-2),2.55×10^(-2),4.01×10^(-2),and 10^(-1) cm^(-1),Doping G6HSPB into the Nafion matrix prepared composite membranes for testing the performance of fuel cells.At 80°C and 98%RH,the proton conductivity of 9%-G6HSPB@Nafion reached a maximum value of 1.14×10^(-1) S cm^(-1),which is 2.8 times higher than recast Nafion.The results showed that charge-assisted HOFs with high proton channel density have better proton transport properties,providing a reference for the design of highly proton-conducting materials.

关 键 词：hydrogen-bonded organic frameworks charge-assisted nanotubular proton conduction proton exchange membrane 

分 类 号：O57[理学—粒子物理与原子核物理]