典型文献
Reconstructing proton channels via Zr-MOFs realizes highly ion-selective and proton-conductive SPEEK-based hybrid membrane for vanadium flow battery
文献摘要：
There is an urgent need to break through the trade-off between proton conductivity and ion selectivity of proton exchange membrane(PEM)in vanadium flow battery(VFB).Proton channels in PEM are the key to controlling the ion sieving and proton conductivity in VFB.Herein,two types of proton channels are reconstructed in the hybrid membrane via introducing modified Zr-MOFs(IM-UIO-66-AS)into SPEEK matrix.Internal proton channels in IM-UIO-66-AS and interfacial proton channels between grafted imi-dazole groups on Zr-MOFs and SPEEK greatly improve the conductivity of the IM-UIO-66-AS/SPEEK hybrid membrane.More importantly,both reconstructed proton channels block the vanadium-ion per-meation to realize enhanced ion selectivity according to the size sieving and Donnan exclusion effects,respectively.Moreover,the hybrid membrane exhibits good mechanical property and dimensional stabil-ity.Benefiting from such rational design,a VFB loading with the optimized membrane exhibits enhanced voltage efficiency of 79.9％and outstanding energy efficiency of 79.6％at 200 mA cm-2,and keeps a nota-ble cycle stability for 300 cycles in the long-term cycling test.Therefore,this study provides inspiration for preparing next-generation PEMs with high ion selectivity and proton conductivity for VFB application.
文献关键词：
中图分类号：
作者姓名：
Denghua Zhang;Wenjie Yu;Yue Zhang;Sihan Cheng;Mingyu Zhu;Shuai Zeng;Xihao Zhang;Yifan Zhang;Chao Luan;Zishen Yu;Lansong Liu;Kaiyue Zhang;Jianguo Liu;Chuanwei Yan
作者机构：
Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,Liaoning,China
文献出处：
引用格式：
[1]Denghua Zhang;Wenjie Yu;Yue Zhang;Sihan Cheng;Mingyu Zhu;Shuai Zeng;Xihao Zhang;Yifan Zhang;Chao Luan;Zishen Yu;Lansong Liu;Kaiyue Zhang;Jianguo Liu;Chuanwei Yan-.Reconstructing proton channels via Zr-MOFs realizes highly ion-selective and proton-conductive SPEEK-based hybrid membrane for vanadium flow battery)[J].能源化学,2022(12):448-456
A类：
VFB,imi,dazole,meation,nota
B类：
Reconstructing,proton,channels,via,Zr,MOFs,realizes,highly,selective,conductive,SPEEK,hybrid,membrane,vanadium,flow,battery,urgent,need,break,through,trade,off,between,conductivity,selectivity,exchange,Proton,are,key,controlling,sieving,Herein,two,types,reconstructed,introducing,modified,IM,UIO,AS,into,matrix,Internal,interfacial,grafted,groups,greatly,improve,importantly,both,block,enhanced,according,size,Donnan,exclusion,effects,respectively,Moreover,exhibits,good,mechanical,property,dimensional,Benefiting,from,such,rational,design,loading,optimized,voltage,efficiency,outstanding,energy,mA,keeps,ble,stability,cycles,long,term,cycling,test,Therefore,this,study,provides,inspiration,preparing,next,generation,PEMs,application
AB值：
0.463319
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