Nanostructured Ni-Cu Electrocatalysts for the Oxygen Evolution Reaction.

ABSTRACT: Ni-based materials are promising electrocatalysts for the oxygen evolution reaction (OER) for water splitting in alkaline media. We report the synthesis and OER electrocatalysis of both Ni-Cu nanoparticles (20-50 nm in diameter) and Ni-Cu nanoclusters (<20 metal atoms). Analysis of mass spectral data from matrix-assisted laser desorption/ionization and electrospray ionization techniques demonstrates that discrete heterobimetallic Ni-Cu nanoclusters capped with glutathione ligands were successfully synthesized. Ni-Cu nanoclusters with a 52:48 mol % Ni:Cu metal composition display an OER onset overpotential of 50 mV and an overpotential of 150 mV at 10 mA cm^-2, which makes this catalyst one of the most efficient nonprecious metal OER catalysts. The durability of the nanocluster ca

SUBMITTER: Gautam RP 

PROVIDER: S-EPMC8009306 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature