A photovoltaic-electrolysis system with high solar-to-hydrogen efficiency under practical current densities.

ABSTRACT: The photovoltaic-alkaline water (PV-AW) electrolysis system offers an appealing approach for large-scale green hydrogen generation. However, current PV-AW systems suffer from low solar-to-hydrogen (STH) conversion efficiencies (e.g., <20%) at practical current densities (e.g., >100 mA cm^-2), rendering the produced H₂ not economical. Here, we designed and developed a highly efficient PV-AW system that mainly consists of a customized, state-of-the-art AW electrolyzer and concentrator photovoltaic (CPV) receiver. The highly efficient anodic oxygen evolving catalyst, consisting of an iron oxide/nickel (oxy)hydroxide (Fe₂O₃-NiO_xH_y) composite, enables the customized AW electrolyzer with unprecedented catalytic perfor

SUBMITTER: Zhang Q 

PROVIDER: S-EPMC11864181 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature