Extended-Surface Thin-Film Platinum Electrocatalysts with Tunable Nanostructured Morphologies.

ABSTRACT: Reducing platinum group metal (PGM) loadings in fuel cells and electrolyzers is paramount for cost reductions and getting hydrogen to scale to help decarbonize the global economy. Conventional PGM nanoparticle-based ink-cast electrocatalysts lose performance at high current densities owing to mass transport resistances that arise due to the use of ionomer binders. Herein, we report the development of binder-free extended-surface thin-film platinum electrocatalysts with tunable nanoscale morphology and periodic spacing. The electrocatalysts are prepared by sputtering various loadings of platinum on Al₂O₃ nanostructures templated from self-assembled block copolymer (BCP) thin films on glassy carbon substrates. Testing for oxygen reduction on a rotating disk electrode se

SUBMITTER: Bhattacharya D 

PROVIDER: S-EPMC10466344 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature