5MPa高压质子交换膜水电解装置的研制与试验

目的实现质子交换膜水电解技术的工程化,满足实际应用的需要。方法在完成大电流密度膜电极的基础上,针对质子膜水电解系统流程、工作压力进行工程设计,研制了氧气产量≥3000 SL/h的单模块电解槽及系统装置,对该装置进行了电化学性能测试,并研究了压力对电流密度、电解电压、气体纯度、电解效率等因素的影响。结果研制的高压水电解装置具备稳定制氧能力,输出压力为5.0 MPa、纯度为99.5%,工作电流密度1.0～1.3 A/cm2时单池电压≤1.9 V。结论研制的高压质子交换膜水电解系统能够满足实际应用的需要。

Development and Test of 5 MPa High Pressure Proton Exchange Membrane Water Electrolysis System

Objective To realize the engineering of proton exchange membrane(PEM) water electrolysis technology and satisfy the engineering application.Methods Based on the high current density membrane electrode,engineering design was carried out for the flow diagram and operating pressure of the PEM water electrolysis system.A high pressure water electrolysis system was manufactured with single electrolyzer which could produce 3000 L O2 per hour.Electrochemical performance of the high pressure PEM water electrolysis system was tested.The influence of operating pressure on parameters such as current density,electrolysis voltage,gas purity and electrolysis efficiency were studied.Results The high pressure water electrolysis system could stably output oxygen at 5 MPa pressure with the purity greater than 99.5%.The cell voltage was less than 1.9 V at 1.0~1.3 A/cm2.Conclusion The high pressure PEM water electrolysis system can meet the requirement of practical application.