典型文献
Patterned catalyst layer boosts the performance of proton exchange membrane fuel cells by optimizing water management
文献摘要：
Mass transport is crucial to the performance of proton exchange membrane fuel cells,especially at high current densities.Generally,the oxygen and the generated water share same transmission medium but move towards opposite direction,which leads to serious mass transfer problems.Herein,a series of pat-terned catalyst layer were prepared with a simple one-step impressing method using nylon sieves as templates.With grooves 100 μm in width and 8 μm in depth on the surface of cathode catalyst layer,the maximum power density of fuel cell increases by 10％without any additional durability loss while maintaining a similar electrochemical surface area.The concentration contours calculated by finite ele-ment analysis reveal that the grooves built on the surface of catalyst layer serve to accumulate the water nearby while oxygen tends to transfer through relatively convex region,which results from capillary pressure difference caused by the pore structure difference between the two regions.The separation of oxidant gas and generated water avoids mass confliction thus boosts mass transport efficiency.
文献关键词：
中图分类号：
作者姓名：
Yingjie Zhou;Wenhui Zhang;Shengwei Yu;Haibo Jiang;Chunzhong Li
作者机构：
Key Laboratory for Ultrafine Materials of Ministry of Education,Shanghai Engineering Research Center of Hierarchical Nanomaterials,School of Materials Science and Engineering,East China University of Science&Technology,Shanghai 200237,China
文献出处：
引用格式：
[1]Yingjie Zhou;Wenhui Zhang;Shengwei Yu;Haibo Jiang;Chunzhong Li-.Patterned catalyst layer boosts the performance of proton exchange membrane fuel cells by optimizing water management)[J].中国化学工程学报（英文版）,2022(04):246-252
A类：
terned,impressing,confliction
B类：
Patterned,catalyst,layer,boosts,performance,proton,exchange,membrane,fuel,cells,optimizing,water,management,Mass,transport,crucial,especially,high,current,densities,Generally,oxygen,generated,share,same,transmission,medium,but,move,towards,opposite,direction,which,leads,serious,mass,transfer,problems,Herein,series,pat,were,prepared,simple,one,step,method,using,nylon,sieves,templates,With,grooves,width,depth,surface,cathode,maximum,power,density,increases,without,any,additional,durability,loss,while,maintaining,similar,electrochemical,area,concentration,contours,calculated,finite,analysis,reveal,that,built,serve,accumulate,nearby,tends,through,relatively,convex,results,from,capillary,pressure,difference,caused,pore,structure,between,two,regions,separation,oxidant,gas,avoids,thus,efficiency
AB值：
0.642421
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
