Abstract:
The depletion of fossil fuels in the current world has been a major concern due to their role
as a primary source of energy for many countries. As non-renewable sources continue to deplete,
there is a need for more research and initiatives to reduce reliance on these sources and explore
better alternatives, such as renewable energy. Hydrogen is one of the most intriguing energy sources
for producing power from fuel cells and heat engines without releasing carbon dioxide or other
pollutants. The production of hydrogen via the electrolysis of water using renewable energy sources,
such as solar energy, is one of the possible uses for solid oxide electrolysis cells (SOECs). SOECs can
be classified as either oxygen-ion conducting or proton-conducting, depending on the electrolyte
materials used. This article aims to highlight broad and important aspects of the hybrid SOEC-based
solar hydrogen-generating technology, which utilizes a mixed-ion conductor capable of transporting
both oxygen ions and protons simultaneously. In addition to providing useful information on
the technological efficiency of hydrogen production in SOEC, this review aims to make hydrogen
production more efficient than any other water electrolysis system.
