2023-05-11 04:23:28
Hydrogen is attracting attention as a future energy source to reach carbon neutrality. A hydrogen fuel cell is a power generation device that produces electricity by reacting hydrogen and oxygen in the air, and is being developed as a power source for vehicles such as cars, buses, and ships as well as small and medium-sized power generation. However, platinum, a precious metal, is currently used as an electrode material, which is an obstacle to lowering the price.
KAIST announced on the 11th that Professor Eunae Cho’s research team in the Department of Materials Science and Engineering’s Energy Conversion and Storage Materials Lab succeeded in developing a low-cost but high-performance electrode material that can replace platinum.
KAIST Professor Eunae Cho’s research team developed a ‘nickel-molybdenum material’ with better performance than platinum as an electrode material for anion exchange membrane fuel cells, which are being developed as next-generation fuel cells.
When applying a newly developed catalyst to an actual fuel cell, there were many cases where actual performance was not obtained due to various variables, but the research team overcame this in this study and succeeded in applying the newly developed catalyst to an actual fuel cell.
Nickel has been attracting attention as a non-noble metal electrode material for anion exchange membrane fuel cells, but it has not been applied in practice because it is less than 1/100th of platinum’s performance. However, the nickel-molybdenum catalyst developed by the research team has better performance than platinum (platinum: 1.0 mA/cm2, nickel-molybdenum catalyst: 1.1 mA/cm2), and the price is only 1/80th of platinum, expected to be substituted.
The research team also succeeded in securing performance by applying a nickel-molybdenum catalyst to a fuel cell.
Professor Cho Eun-ae said, “Pure nickel has low performance, but by using molybdenum oxide to change the electronic structure of nickel, the performance has been dramatically improved.” I hope there will be,” he said.
The results of this research, in which Dr. Kwon Yong-geun of the Department of Materials Science and Engineering at KAIST participated as the first author, were published in the online edition of Applied Catalysis B: Environmental on April 5, 2023, a renowned international academic journal in the field of materials. .
Correspondent Changhyun Lee of Hellotti |
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