PEM水电解器中阴极钛集电器、双极板的氢脆防护  

Hydrogen Embrittlement and Protection of Ti Current Collector/Bipolar Plate in PEM Water Electrolyser

作　　者：史言[1] 胡晓宏[2] 周元全[2] 

机构地区：[1]中国科学院广州能源研究所,广东广州510640 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《航天医学与医学工程》2015年第1期44-47,共4页Space Medicine & Medical Engineering

基　　金：中国载人航天工程基金资助

摘　　要：目的作为空间站制氧装置的PEM水电解器在长时间运行中,阴极的钛集电器、双极板会发生"氢脆"导致接触电阻增大,水电解器能耗升高。为保证水电解器的稳定运行,需要对阴极的钛组件进行表面处理来提高防"氢脆"的能力。方法通过使用热分解法在钛集电器、双极板表面制作了铂防护层,使用等离子溅射法制作了表面覆盖有金薄层的金/钛双极板。结果阴极使用防氢脆处理的组件后,水电解器在1 A/cm2,80℃下连续运行3500 h后槽电压依然稳定,集电器与双极板均未出现"氢脆"现象。结论采用合适的方法在钛组件表面制作铂、金保护层能够有效的防止阴极钛组件的"氢脆"。Objective The current collector and bipolar plate in the cathode of PEM water eletrolyser are susceptible to hydrogen embrittlement during long time operation,causing increased contact resistance and power consumption. To ensure the stable operation of the electrolyser,the resistant ability for hydrogen embrittlement of Ti current collector and bipolar plate in cathode must be improved. Methods Platinum layer were coated on Ti current collector and bipolar plate by thermolysis method and gold layer were deposited on Ti bipolar plate by plasma sputtering method. Results The voltage of electrolyser remained stable after 3500 h operation at 1A /cm^2 under 80 ℃ with surface modification. Conclusion Platinum and gold layer coated on the surface of Ti module exhibit an excellent resistant ability for hydrogen embrittlement.

关 键 词：空间站 制氧装置 PEM水电解器 钛集电器 氢脆 

分 类 号：R852.82[医药卫生—航空、航天与航海医学]