Solid oxide electrolysis cells for producing pure hydrogen from low calorie gas

摘要

Effect of low calorie gas on the electrolytic electricity consumption in solid oxide electrolysiscells (SOECs) is investigated. Testing cells which have a thin electrolyte membrane on aporous Ni-8YSZ tube are fabricated by using the wet process to reduce operating temperature.To measure amount of producing hydrogen precisely, a testing bench which has a quadrupolemass spectrometer and a Fourier transform infrared spectrometer is built. From the result ofthe experiment, it is clarified that the testing cells operated at 700 °C produce hydrogen atvery low electrolytic voltage of approximately -0.2V to 0.2V with current efficiency of 100%.