%0 Journal Article %A Laurie A King %A McKenzie A Hubert %A Christopher Capuano %A Judith Manco %A Nemanja Danilovic %A Eduardo Valle %A Thomas R Hellstern %A Katherine Ayers %A Thomas F Jaramillo %B Nature Nanotechnology %D 2019 %G eng %N 11 %P 1071 - 1074 %R 10.1038/s41565-019-0550-7 %T A non-precious metal hydrogen catalyst in a commercial polymer electrolyte membrane electrolyser %V 14 %8 10/2019 %! Nat. Nanotechnol. %X

We demonstrate the translation of a low-cost, non-precious metal cobalt phosphide (CoP) catalyst from 1 cm2 lab-scale experiments to a commercial-scale 86 cm2 polymer electrolyte membrane (PEM) electrolyser. A two-step bulk synthesis was adopted to produce CoP on a high-surface-area carbon support that was readily integrated into an industrial PEM electrolyser fabrication process. The performance of the CoP was compared head to head with a platinum-based PEM under the same operating conditions (400 psi, 50 °C). CoP was found to be active and stable, operating at 1.86 A cm−2 for >1,700 h of continuous hydrogen production while providing substantial material cost savings relative to platinum. This work illustrates a potential pathway for non-precious hydrogen evolution catalysts developed in past decades to translate to commercial applications.