2026 年 94 巻 10 号 p. 101004
Electrocatalytic carbon dioxide reduction and oxygen evolution reactions are key reactions for renewable-energy-driven chemical conversion. The catalytic activity of electrocatalysts based on inorganic nanomaterials in these reactions is strongly governed by the coordination and electronic structures of the metal active centers. This paper summarizes the development of highly active electrocatalysts through structural control across multiple scales, including composition, electronic state, particle size and morphology. For electrochemical CO2 reduction, control of composition and nanostructure was used to regulate product selectivity. For the oxygen evolution reaction, valence-state modulation, multi-element oxide design, and particle size control were employed to enhance catalytic activity. These studies demonstrate that precise structural control of inorganic nanomaterials provides an effective strategy for improving electrocatalytic activity and selectivity in CO2 and water electrolysis.