US 12,486,582 B2
Apparatus for generating hydrogen and oxygen through alkaline electrolysis, and corresponding process
Alberto Valli, Desenzano del Garda (IT); and Emanuele Castioni, Sommacampagna (IT)
Assigned to HYTER S.R.L., Desenzano del Garda (IT)
Appl. No. 17/919,869
Filed by HYTER S.R.L., Desenzano del Garda (IT)
PCT Filed Apr. 23, 2021, PCT No. PCT/EP2021/060723
§ 371(c)(1), (2) Date Oct. 19, 2022,
PCT Pub. No. WO2021/214318, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 102020000008785 (IT), filed on Apr. 23, 2020; and application No. 102021000010040 (IT), filed on Apr. 20, 2021.
Prior Publication US 2023/0160074 A1, May 25, 2023
Int. Cl. C25B 1/04 (2021.01); C25B 9/05 (2021.01); C25B 9/19 (2021.01); C25B 9/63 (2021.01); C25B 9/65 (2021.01); C25B 11/052 (2021.01); C25B 11/061 (2021.01); C25B 11/081 (2021.01); C25B 11/089 (2021.01); C25B 13/08 (2006.01)
CPC C25B 1/04 (2013.01) [C25B 9/05 (2021.01); C25B 9/19 (2021.01); C25B 9/63 (2021.01); C25B 9/65 (2021.01); C25B 11/052 (2021.01); C25B 11/061 (2021.01); C25B 11/081 (2021.01); C25B 11/089 (2021.01); C25B 13/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Apparatus for generating hydrogen (H2) and oxygen (O2) through alkaline electrolysis, the apparatus comprising
a pair of current-holder metal plates to which a direct electric current between 1 A and 250 A is applied;
a casing made of an electrically non-conductive material and able to bear an internal relative pressure of a gas ranging between 1 and 50 bar;
a pair of metal electrode-holders, each electrode-holder being porous and able to absorb an aqueous solution and having a compression mechanical resistance ranging between 1.5 and 8 MPa to resist deformation impressed by the internal relative pressure while maintaining flatness;
a pair of electrodes, each electrode being placed in contact with the corresponding electrode-holder and being made with nanometric powders of metal mixtures deposited on each corresponding electrode-holder;
a polymeric membrane made of an electrically non-conductive material, porous to the aqueous solution but not to the gas, wherein the pair of metal electrode-holders allows the aqueous solution to flow uniformly distributed over an entire surface of the electrodes and carries the electric current from the current-holder metal plates to the electrodes.