Self-Triggering a Locally Alkaline Microenvironment of Co 4 Fe 6 for Highly Efficient Neutral Ammonia Electrosynthesis
University of Science and Technology of China · Chinese Academy of Sciences · +6 more institutions
Abstract
Electrochemical nitrate reduction reaction (eNO3–RR) to ammonia (NH3) holds great promise for the green treatment of NO3– and ambient NH3 synthesis. Although Fe-based electrocatalysts have emerged as promising alternatives, their excellent eNO3–RR-to-NH3 activity is usually limited to harsh alkaline electrolytes or alloying noble metals with Fe in sustainable neutral electrolytes. Herein, we demonstrate an unusual self-triggering localized alkalinity of the Co4Fe6 electrocatalyst for efficient eNO3–RR-to-NH3 activity in neutral media, which breaks down the conventional pH-dependent kinetics restrictions and shows a 98.6% NH3 Faradaic efficiency (FE) and 99.9% NH3 selectivity at −0.69 V vs RHE. The synergetic…
Citation impact
- FWCI
- 19.87
- Percentile
- 100%
- References
- 62
Authors
9- YYYang Yang
University of Science and Technology of China, Chinese Academy of Sciences
- YSYuting Sun
Chinese Academy of Sciences, Dalian University of Technology, Dalian University, Division of Materials Science and Engineering
- YWYuning Wang
Chinese Academy of Sciences, Universidad del Noreste, Northeastern University
- XZXiaoxue Zhang
Tianjin University
- WZWenyu Zhang
University of Science and Technology of China, Chinese Academy of Sciences
Topics & keywords
- Chemistry
- Alkalinity
- Inorganic chemistry
- Electrolyte
- Electrocatalyst
- Electrosynthesis
- Electrolysis
- Ammonia