NiCu alloy-modified N-doped carbon nanofiber networks for efficient ammonia electrooxidation
- 1Xiamen Zijin Renewable Energy and Advanced Materials Technology Co., Ltd. Xiamen 361024 Fujian China
- 2School of Mechanical and Automotive Engineering, Xiamen University of Technology Xiamen 361024 Fujian China
Abstract
Developing earth-abundant electrocatalysts for the sluggish ammonia oxidation reaction (AOR) is critical for sustainable ammonia energy utilization and wastewater treatment. Herein, three-dimensionally interconnected N-doped carbon nanofiber-supported NiCu alloy electrocatalysts are synthesized via electrospinning and pyrolysis using ZIF-8 as the nitrogen source. The structure–activity relationship toward the AOR is investigated by adjusting the ZIF-8 dosage and Ni/Cu molar ratio. The optimized Ni3Cu1/N-CNFs-200 catalyst (200 mg ZIF-8, Ni/Cu = 3 : 1) achieves improved AOR activity, with an onset potential of 0.45 V vs. Hg/HgO and a 5.2-fold larger electrochemically active surface area (ECSA) than the ZIF-8-free control catalyst. Electrochemical analyses indicate that N doping enlarges the electrochemically active surface area and promotes surface reconstruction toward active oxyhydroxide species, thereby enhancing the catalytic activity. These results demonstrate a geometric-effect-dominated enhancement strategy for non-noble metal AOR electrocatalysts via MOF-derived nitrogen doping, offering insights into the rational design of high-surface-area catalyst supports.
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BibTeX
@article{li2026nicu,
title = {{NiCu alloy-modified N-doped carbon nanofiber networks for efficient ammonia electrooxidation}},
author = {Zhisen Li and Panfeng Wang and Ting Tao and Shangfeng Jiang},
journal = {RSC Advances},
year = {2026},
month = oct,
doi = {10.1039/d6ra07843e},
url = {https://doi.org/10.1039/d6ra07843e},
note = {CC BY-NC 3.0},
}
RIS
TY - JOUR
TI - NiCu alloy-modified N-doped carbon nanofiber networks for efficient ammonia electrooxidation
AU - Zhisen Li
AU - Panfeng Wang
AU - Ting Tao
AU - Shangfeng Jiang
PY - 2026
DA - 2026/10/09
JO - RSC Advances
DO - 10.1039/d6ra07843e
UR - https://doi.org/10.1039/d6ra07843e
AB - Developing earth-abundant electrocatalysts for the sluggish ammonia oxidation reaction (AOR) is critical for sustainable ammonia energy utilization and wastewater treatment. Herein, three-dimensionally interconnected N-doped carbon nanofiber-supported NiCu alloy electrocatalysts are synthesized via electrospinning and pyrolysis using ZIF-8 as the nitrogen source. The structure–activity relationship toward the AOR is investigated by adjusting the ZIF-8 dosage and Ni/Cu molar ratio. The optimized Ni3Cu1/N-CNFs-200 catalyst (200 mg ZIF-8, Ni/Cu = 3 : 1) achieves improved AOR activity, with an onset potential of 0.45 V vs. Hg/HgO and a 5.2-fold larger electrochemically active surface area (ECSA) than the ZIF-8-free control catalyst. Electrochemical analyses indicate that N doping enlarges the electrochemically active surface area and promotes surface reconstruction toward active oxyhydroxide species, thereby enhancing the catalytic activity. These results demonstrate a geometric-effect-dominated enhancement strategy for non-noble metal AOR electrocatalysts via MOF-derived nitrogen doping, offering insights into the rational design of high-surface-area catalyst supports.
SN - 2046-2069
ER -