Hydrogen production from steam of alkaline solution by plasma electrolysis

Abstract

One of the CO₂-free hydrogen production methods is a system that produces hydrogen by the water electrolysis method using surplus electricity from renewable energy, but the hydrogen production efficiency itself is not high because the power consumption is very large. Therefore, the development of a device that can produce hydrogen from water with low power is desired. We have been developing a hydrogen production method that decomposes ammonia with atmospheric pressure plasma. We thought that atmospheric pressure plasma has a high electron temperature and can generate hydrogen by decomposing gaseous water (water vapor) with low power consumption. In this study, steam generated from distilled water and alkaline water (NH₃) was decomposed by electric discharge in a cylindrical plasma reactor, and the hydrogen generation behavior at that time was investigated.