Positively Charged Pt-Based Nanoreactor for Efficient and Stable Hydrogen Evolution.

ABSTRACT: Positively charged Pt can work as the active center for hydrogen evolution reaction (HER) but the corresponding design of state-of-the-art electrocatalysts at high current densities has never been realized. Here the application of positively charged Pt in an effective Fe-PtNiPO nanoreactor for highly efficient and stable HER is demonstrated. Synchrotron radiation X-ray absorption spectroscopy confirms the formation of internal positively charged Pt and the in situ experiments reveal the quick charge transfer in the nanoreactor. Ni-based materials around Pt are used to tune the electronic structure and promote the water dissociation to form locally enriched H⁺ , while a porous Fe shell can both prevent the loss of active material and allow the efficient material transport. All th

SUBMITTER: Feng K 

PROVIDER: S-EPMC9534975 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature