Scientists discover a hidden switch inside silver nanocatalysts
Researchers have discovered that silver nanocatalysts in solid oxide cells change their reaction sites depending on whether the cell is generating electricity or hydrogen. This insight could lead to more efficient designs for clean energy and hydrogen production devices.
Why it matters
Optimizing catalyst performance is essential for advancing green hydrogen technology and improving the efficiency of renewable energy storage systems.
Researchers have discovered for the first time that the same silver (Ag) nanocatalyst can operate at different reaction sites depending on whether a solid oxide cell is producing electricity or generating hydrogen. The finding points to a new way of designing these next-generation energy devices for better performance.
The work was led by Professors WooChul Jung and Jeong Woo Han of the Department of Materials Science and Engineering at Seoul National University (SNU), together with Professor Sang Ouk Kim's team at KAIST and Dr. Beomgyun Jeong's team at the Korea Basic Science Institute (KBSI). Their results clarify how silver nanocatalysts improve solid oxide cell performance and show that both the location and mechanism of oxygen reactions change depending on how the cell is being used.
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