In the temperature range of high co-electrolysis both steam and carbon dioxide, reverse water-gas shift reaction (RWGS) takes place. Prior studies were conducted with a narrow gas composition to investigate role RWGS during co-electrolysis. The results for electrolysis, CO 2 caused different conclusions regarding electrochemical H O conversion compared This work aims resolve as part in boundary...

Hydrogen is known to be the carbon-neutral alternative energy carrier with highest density. Currently, more than 95% of hydrogen production technologies rely on fossil fuels, resulting in greenhouse gas emissions. Water electrolysis one most widely used for generation. Nuclear power, a renewable source, can provide heat needed process steam clean production. This review paper analyses recent pr...

Waste heat recovery is common in high-temperature water electrolysis production, but the latent from hydrogen–water mixture not fully utilized, and electric heater to generate steam consumes much energy. In this research, a cascade pump proposed recover products steam. The can save as 65% energy compared with single heater. Although some cases, enough sufficient steam, it still 46.1% of Also, r...

Composite cathodes based on Sr0.94Ti0.9Nb0.1O3 (STNO) can be utilized for direct steam electrolysis; however, the insufficient electrocatalytic activity limits electrode performance and current efficiency. In this work, redox-reversible (Sr0.94)0.9(Ti0.9Nb0.1)0.9Ni0.1O3 (STNNO) with A-site deficiency and B-site excess has been designed as a cathode material in an oxide-ion-conducting solid oxid...

It was shown about 25 years ago that solid oxide fuel cells (SOFC) could also work in the solid oxide electrolyser cell (SOEC) mode. Electrolysis of both water (steam) and CO2 was demonstrated. During the 1990'ies very little electrolysis work was reported in the open literature, whereas an enormous amount of results on the SOFC R&D appeared. Recently, the increasing interest in hydrogen produc...

We present analyses of three families of compressed air energy storage (CAES) systems: conventional CAES, in which the heat released during air compression is not stored and natural gas is combusted to provide heat during discharge; adiabatic CAES, in which the compression heat is stored; and CAES in which the compression heat is used to assist water electrolysis for hydrogen storage. The latte...