| abstract |
The present invention relates to a method for generating hydrogen and oxygen adsorbates by steam electrolysis at 200 to 800° C. using an electrolysis cell ( 30 ) comprising a solid electrolyte ( 31 ) which is made of a proton-conducting ceramic and which is arranged between an anode ( 32 ) and a cathode ( 33 ), each of which comprises a proton-conducting ceramic, and the ratio of the electroactive surface to the geometric surface of each of which is equal to at least 10, said method comprising the following steps: circulating a current between the anode ( 32 ) and the cathode ( 33 ), wherein the density of the current is no less than 500 mA/cm 2 ; inserting water in the form of steam, which is fed under pressure to the anode ( 32 ); oxidizing said water in the form of steam at the anode ( 32 ), and generating highly reactive oxygen at the anode ( 32 ) after said oxidation; generating protonated species in the electrolyte ( 31 ) after said oxidation and migrating said protonated species in the electrolyte ( 31 ); and reducing said protonated species at the surface of the cathode ( 33 ) in the form of reactive hydrogen atoms. |