航天医学与医学工程

目的实现固体聚合物电解质水电解技术的工程化,解决这一技术在工程实施中存在的问题,使其满足密闭环境供氧设备的要求。方法电解池组采用阳极供水与压滤机组装的方式,针对水电解池供水与供电的要求,设计了电解池的极板以及集电板,并对极板进行了轻量化设计,组装了3套样机。结果在75℃、电流密度0.6A/cm2条件下,小池平均电解电压低于1.75V;在密闭舱内3人62d的试验考核中,水电解池堆运行稳定,产生的气体O2纯度高于99.5%;集成120个单电池的水电解器,能稳定输出压力为1MPa、流量为1 523L/h的O2。结论水电解器的设计合理、极板轻量化设计可行,基本解决固体聚合物电解质水电解技术工程化应用中的技术问题,满足密闭环境对水电解器的性能要求。

Objective To realize a solid polymer electrolyte(SPE) oxygen generation assembly(OGA) in order to supply oxygen for the stewards of a sealed cabin and to solve that may exist in the engineering process.Methods The cell stack was a kind of anode feed water electrolyzer in a bipolar arrangement between two compression end plates.The metal racks and the end plates were designed to be lighter and they were assembled by a pressing filter.Three sets of the electrolyzers were constructed.Results In the experiment of three persons living in a sealed cabin for 62 d,the ORS operated stably and the purity of generated oxygen was higher than 99.5% with the pressure of 1 MPa and flow rate of 1 523 L/h.Conclusion The electrolyzer specially designed is light and compact.The OGA constructed satisfies the requirements of providing oxygen in a sealed cabin for a long time with stable performance.