Lithium cation exchange membrane for water electrolysis, and water electrolysis system using same
AssigneeBoyaz Energy
InventorsSang-Beom Han, Yong-Hwan Mo, Yong-Soo Lee
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Abstract
The present invention relates to a lithium cation exchange membrane, for water electrolysis, having high lithium cation conductivity, and a water electrolysis system using same, and a water electrolysis system using a lithium cation exchange membrane (LEM) for water electrolysis according to the present invention, comprising a hydrophilic polymer solution and a monomer solution having a sulfonic acid group, is an economically feasible water electrolysis system achieving lower costs than conventional proton exchange membrane (PEM) water electrolysis and a higher current density than alkali water electrolysis.
Claims7
A lithium cation exchange membrane (LEM) water electrolysis system, comprising:
- a lithium cation exchange membrane including a perfluorosulfonic acid polymer having sulfonic acid groups and a hydrophilic polymer;
- an anode catalyst layer on one side of the cation exchange membrane, the anode catalyst layer comprising Ni3Co alloy nanoparticles, and
- a cathode catalyst layer on the opposite side of the cation exchange membrane, the cathode catalyst layer comprising nickel-based nanoparticles,
- wherein an aqueous lithium hydroxide electrolyte is supplied to the anode side and lithium hydroxide is produced at the cathode side during water electrolysis.
Dependencies are inferred from the claim text.