Silver nanocatalysts switch reaction sites between power generation and hydrogen production
For the first time, researchers have discovered that the same silver (Ag) nanocatalyst operates at different reaction sites depending on whether a solid oxide cell is generating electricity or producing hydrogen. This finding introduces a new design principle for improving the performance of next-generation solid oxide cells.
Researchers have discovered that silver nanocatalysts can switch between different reaction sites depending on whether a solid oxide cell is generating electricity or producing hydrogen. This finding could lead to improved performance of next-generation solid oxide cells, which are a key technology for expanding clean power generation and hydrogen use.
The study, led by researchers from Seoul National University, KAIST, and KBSI, used a model electrode system to precisely analyze the catalytic roles of silver nanoparticles in oxygen reactions. They found that silver nanocatalysts exhibit the strongest catalytic enhancement and that the reaction sites and mechanisms vary depending on the cell's operating mode.
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