How to get to best oxygen evolution behavior from the electrolysis practice of the seawater

Direct seawater electrolysis is the main method of hydrogen energy production in the future. However, due to the competition of anode chlorine evolution and the phenomenon of cathode fouling, direct seawater electrolysis faces great challenges. Alkali treatment of seawater is the treatment method for most work at present, but there is currently no uniform standard for the amount of alkali. Obviously, excessive alkali treatment will increase operating costs. Here, the NiFe LDH material, which is considered to have the best catalytic OER performance, is grown on carbon cloth, and the optimal amount of alkali treatment seawater is explored. By determining the amount of alkali by the amount of precipitation, it can reduce the operating cost of industrial production. It can also prevent the impact of sedimentation on the life of the equipment. We believe that this treatment method will make a great contribution to the future standard seawater pretreatment method. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

Direct seawater electrolysis is the main method for future hydrogen energy production, facing challenges due to chlorine evolution at the anode and cathode fouling. Alkali treatment of seawater is currently common but lacks a uniform standard. Growing NiFe LDH material on carbon cloth to explore optimal alkali treatment of seawater can reduce operating costs and prevent sedimentation impacts on equipment lifespan.