Heteroatom doping enables hydrogen spillover via H⁺/e^- diffusion pathways on a non-reducible metal oxide.

ABSTRACT: Hydrogen spillover, the simultaneous diffusion of protons (H⁺) and electrons (e^-) is considered to be applicable to ubiquitous technologies related to hydrogen but limited to over reducible metal oxides. The present work demonstrates that a non-reducible MgO with heteroatom Al dopants (Al-MgO) allows hydrogen spillover in the same way as reducible metal oxides. Furthermore, a H⁺ storage capacity of this material owing to hydrogen spillover is more than three times greater than those of various standard metal oxides based on H⁺ transport channels within its bulk region. Atomic hydrogen diffuses over the non-reducible Al-MgO produces active H⁺-e^- pairs, as also occurs on reducible metal oxides, to enhance the catalytic perform

SUBMITTER: Shun K 

PROVIDER: S-EPMC11291974 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature