Stepwise Fabrication of Proton-conducting Covalent Organic Frameworks for Hydrogen Fuel Cell Applications  

作　　者：JIA Shuping ZHAO Peng LIU Qi CHEN Yao CHENG Peng YANG Yi ZHANG Zhenjie 

机构地区：[1]College of Chemistry,Nankai University,Tianjin 300071,P.R.China [2]State Key Laboratory of Medicinal Chemical Biology,Nankai University,Tianjin 300071,P.R.China [3]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Renewable Energy Conversion and Storage Center,Frontiers Science Center for New Organic Matter,Nankai University,Tianjin 300071,P.R.China [4]Department of Physics,City University of Hong Kong,Hong Kong 999077,P.R.China

出　　处：《Chemical Research in Chinese Universities》2022年第2期461-467,共7页高等学校化学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.21971126);the 111 Projects of China(No.B12015);the Frontiers Science Center for New Organic Matter,China(No.63181206).

摘　　要：Exploring new materials to manufacture proton-conducting membranes(PEMs)for fuel cells is highly significant.In this work,we fabricated two robust and highly crystalline porous covalent organic frameworks(COFs)via a stepwise synthesis strategy.The synthesized COF structures are integrated into high-density azo and amino groups,which allow to anchor acids for accelerating proton conduction.Moreover,the COFs exhibit good chemical stability and high hydrophilicity.These features make them potential platforms for proton conduction applications.Upon loaded with H3PO4,the COFs(H3PO4@COFs)deliver a high proton conductivity of 3.15×10‒2 S/cm at 353 K under 95%relative humidity(RH).Furthermore,membrane electrode assemblies are fabricated using H3PO4@COF-26 as the solid electrolyte for a single fuel cell outputting a maximum power density of 18 mW/cm2.

关 键 词：Covalent organic framework Azo and amino group MEMBRANE Proton conduction Fuel cell 

分 类 号：O62[理学—有机化学]