Influence of Current Density and Operating Temperature on Energy Consumption of PEM Water Electrolysis Hydrogen Generation
Proton exchange membrane(PEM)water electrolysis for hydrogen production is a vital technology that acquires hydrogen with green electricity and achieves China's carbon peaking and carbon neutrality goals.It is a good way to reduce energy consumption for PEM water electrolysis system by optimizing operating parameters.In this study,an industrial-scale PEM electrolysis system is set up.The current density and operating temperature influence energy consumption are investigated based on local experiments.Methods are discussed to cut down the energy consumption by optimizing operating parameters.The system shows a decrease in the specific energy consumption when current density and operating temperature are increased from 0.2 to 1.4 A/cm2 and from 20 to 60 oC,respectively.A decline in average cell voltage and the specific direct current energy consumption is observed as the operating temperature is elevated.The specific direct current energy consumption is increased,and the specific alternate current energy consumption is decreased when the current density of the stack is improved in the system.
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万方数据
维普
