Amorphous CuCoO_x Boosts Active Hydrogen for High‐Rate Tandem Electroreduction of Nitrate to Ammonia

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

The electroreductive conversion of waste nitrate (NO₃⁻) to high-value ammonia (NH₃) offers an alternative the energy-intensive Haber-Bosch process. However, this reaction involves multistep electron-coupled proton transfer, posing kinetic challenges for NH₃ generation. Herein, a-CuCoOx-based tandem electrocatalyst nitrate-to-ammonia is presented. In 1 M KOH with 50 mM NO₃⁻, amorphous catalyst achieves a Faradaic efficiency (FE) 95.61% and yield rate 4.01 mg h⁻¹ cm⁻2 at -0.3 V versus RHE, outperforming its crystalline counterpart (FE: 80.21%; rate: 0.91 cm⁻2). Integrated into Zn-NO₃⁻ battery, a-CuCoOx exhibits peak power density 7.21 mW robust stability. Systematic electrochemical analyses revealed that structure Cu-Co synergy enhance active hydrogen (H*) generation accelerate nitrite-to-ammonia conversion. This study provides insights designing advanced electrocatalysts sustainable energy catalysis.

Язык: Английский

Nitric oxide-delivering surface modification for tailoring cell-material interactions on medical device surface: From surface-functionalized design to therapeutic applications

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162378 - 162378

Опубликована: Апрель 1, 2025

Язык: Английский