Robust Oxygen‐Vacancy‐Engineered Co(OH) 2 /Cu Heterostructures Boost Nitrate Electroreduction to Ammonia beyond 2 A cm −2
Tianjin Energy Investment Group (China) · Unité Matériaux et Transformations · +4 more institutions
Abstract
Abstract Electrocatalytic nitrate reduction reaction (NO 3 RR) presents a sustainable paradigm for green NH 3 synthesis and NO 3 − wastewater valorization. However, overcoming sluggish NO 3 RR kinetics under industrial‐current operation persists as a critical challenge. Herein, robust oxygen vacancy‐enriched heterostructures (O v ‐Co(OH) 2 /Cu) are engineered through in situ electrochemical reconstruction. By coupling Cu‐mediated NO 3 − ‐to‐NO 2 − conversion with O v ‐Co(OH) 2 ‐accelerated NO 2 − ‐to‐NH 3 transformation, this heterostructured system delivers an unprecedented NH 3 yield rate of 167.8 mg h −1 cm −2 and 97.7% Faradaic efficiency at >2 A cm −2 , while maintaining exceptional current tolerance…
Citation impact
- FWCI
- 15.98
- Percentile
- 100%
- References
- 86
Authors
15- WMWeijie Mei
Tianjin Energy Investment Group (China), Unité Matériaux et Transformations, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
- CCChun‐Wai Chang
Oregon State University
- ZLZhiguo Li
Tianjin Energy Investment Group (China), Unité Matériaux et Transformations, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
- XWXinyu Wang
Tianjin Energy Investment Group (China), Unité Matériaux et Transformations, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
- YQYaning Qie
Tianjin Energy Investment Group (China), Unité Matériaux et Transformations, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
Topics & keywords
- Materials science
- Faraday efficiency
- Electrochemistry
- Formate
- Oxygen evolution
- Reversible hydrogen electrode
- Electrolysis
- Chemical engineering