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Study Boosts Hope for Cheaper Fuel Cells

Rice researchers show how to optimize nanomaterials for fuel-cell cathodes. Nitrogen-doped carbon nanotubes or modified graphene nanoribbons may be suitable replacements for platinum for fast oxygen reduction, the key reaction in fuel cells that transform chemical energy into electricity, according to Rice University researchers. The findings are from computer simulations by Rice scientists who set

Ruthenium Rules for New Fuel Cells

Rice University scientists have fabricated a durable catalyst for high-performance fuel cells by attaching single ruthenium atoms to graphene. Catalysts that drive the oxygen reduction reaction that lets fuel cells turn chemical energy into electricity are usually made of platinum, which stands up to the acidic nature of the cell’s charge-carrying electrolyte. But platinum is