化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2015年
1期
80-85,112
,共7页
质子交换膜燃料电池%自增湿%膜电极%复合膜%催化层%气体扩散层
質子交換膜燃料電池%自增濕%膜電極%複閤膜%催化層%氣體擴散層
질자교환막연료전지%자증습%막전겁%복합막%최화층%기체확산층
proton exchange membrane fuel cell%self-humidifying%membrane electrode assembly%composite membrane%catalyst layer%gas diffusion layer
使用自增湿膜电极可以减去燃料电池复杂的增湿系统，并使得膜电极的水热管理变得容易和简单，对于燃料电池的大规模商业化具有重要意义。本文主要从自增湿复合膜、自增湿催化层以及自增气体扩散层等几个方面介绍了近年来自增湿膜电极的一些重要研究进展和发展趋势。首先介绍了基于掺杂和复合机构的自增湿复合膜的发展状况，指出自增湿复合膜是最直接有效的自增湿方式；其次介绍了基于物理或化学方法构筑的自增湿催化层的研究现状，认为构筑自增湿催化层能够促进阴极侧电化学反应生成的水向阳极侧的反扩散，从而提高膜电极的低湿度性能；最后综述了自增湿气体扩散层，对这类电极的发展趋势及应用前景进行了展望。
使用自增濕膜電極可以減去燃料電池複雜的增濕繫統，併使得膜電極的水熱管理變得容易和簡單，對于燃料電池的大規模商業化具有重要意義。本文主要從自增濕複閤膜、自增濕催化層以及自增氣體擴散層等幾箇方麵介紹瞭近年來自增濕膜電極的一些重要研究進展和髮展趨勢。首先介紹瞭基于摻雜和複閤機構的自增濕複閤膜的髮展狀況，指齣自增濕複閤膜是最直接有效的自增濕方式；其次介紹瞭基于物理或化學方法構築的自增濕催化層的研究現狀，認為構築自增濕催化層能夠促進陰極側電化學反應生成的水嚮暘極側的反擴散，從而提高膜電極的低濕度性能；最後綜述瞭自增濕氣體擴散層，對這類電極的髮展趨勢及應用前景進行瞭展望。
사용자증습막전겁가이감거연료전지복잡적증습계통，병사득막전겁적수열관리변득용역화간단，대우연료전지적대규모상업화구유중요의의。본문주요종자증습복합막、자증습최화층이급자증기체확산층등궤개방면개소료근년래자증습막전겁적일사중요연구진전화발전추세。수선개소료기우참잡화복합궤구적자증습복합막적발전상황，지출자증습복합막시최직접유효적자증습방식；기차개소료기우물리혹화학방법구축적자증습최화층적연구현상，인위구축자증습최화층능구촉진음겁측전화학반응생성적수향양겁측적반확산，종이제고막전겁적저습도성능；최후종술료자증습기체확산층，대저류전겁적발전추세급응용전경진행료전망。
Application of self-humidifying membrane electrode assembly (SH-MEA) will result in elimination of complex humidifying system,and make hydro-thermal management of fuel cells easy,leading to decrease of cost and enhancement of power density and performance of fuel cells. All these will be beneficial to large scale commercialization of fuel cells. Actually,the research and development of SH-MEA have been one of the hottest topics in fuel cell field. In this paper,the main progress and achievement are introduced from self-humidifying composite membrane , self-humidifying catalyst layer,and self-humidifying gas diffusion layer. Firstly,the development in self-humidifying composite membrane is introduced including physical doping membrane or composite structure membrane. Secondly,the recent progress of self-humidifying catalyst layer based on the physical or chemical methods is introduced. Preparing self-humidifying catalyst layer would improve the low humidity performance of MEA by accelerating water back-diffusion from cathode to anode. Lastly , self-humidifying gas diffusion layer is reviewed. Furthermore , the progress trend and application of this type of SH-MEA are also prospected.
