Ampere-level reduction of pure nitrate by electron-deficient Ru with K⁺ ions repelling effect.

ABSTRACT: Electrochemical nitrate reduction reaction offers a sustainable and efficient pathway for ammonia synthesis. Maintaining satisfactory Faradaic efficiency for long-term nitrate reduction under ampere-level current density remains challenging due to the inevitable hydrogen evolution, particularly in pure nitrate solutions. Herein, we present the application of electron deficiency of Ru metals to boost the repelling effect of counter K⁺ ions via the electric-field-dependent synergy of interfacial water and cations, and thus largely promote nitrate reduction reaction with a high yield and well-maintained Faradaic efficiency under ampere-level current density. The pronounced electron deficiency of Ru metals boosts the repelling effect on hydrated K⁺ ions, as indicated by t

SUBMITTER: Zhang SN 

PROVIDER: S-EPMC11685401 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature