CO₂ treatment of carbon fibers improves adsorption of fuel cell platinum

초록

Platinum (Pt)-based catalysts have sparked intensive interest in fuel cell research. Activated carbon fibers are widely used for electrodes due to their high conductivity, yet their surface treatment commonly involves toxic reagents. Here we treated activated carbon fibers with CO(2)and H2O at 100 degrees C for 1 h under 20 bar. Results show that treated activated carbon fibers display a higher Pt(IV) adsorption capacity. Benefits may include lower amounts of costly Pt in fuels cells, and sequestrating CO(2)in solid materials to decrease global warming.

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