Optimizing CO Production in Electrocatalytic CO2 Reduction via Electron Accumulation at Ni Sites in Ni3ZnC0.7/Ni on N-Doped Carbon Nanofibers
Full article
| Journal |
Green Energy & Environment
ISSN: 2468-0257
|
| Output data |
Year: 2026,
DOI:
10.1016/j.gee.2025.04.010
|
| Tags |
CO2 electroreduction; CO production; Ni3ZnC0.7/Ni; Heterostructure; Membrane electrode assembly |
| Authors |
Bai Ge
1,2
,
Wang Min
3
,
Peng Luwei
4
,
Li Lulu
1
,
Yu Yadan
1
,
Li Wenyi
1
,
Yang Nianjun
5
,
Kolokolove Daniil I.
6
,
Qiao Jinli
1,2
|
| Affiliations |
| 1 |
State Key Laboratory of Advanced Fiber Materials, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
|
| 2 |
Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
|
| 3 |
School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
|
| 4 |
Department of Applied Physics, Hong Kong Polytechnic University, 11 YucaiRoad, Kowloon, Hongkong, China
|
| 5 |
Department of Chemistry & IMO-IMOMEC, Hasselt University, 3590, Diepenbeek, Belgium
|
| 6 |
Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk, 630090, Russia
|
|
Funding (3)
|
1
|
Ministry of Science and Technology of the People's Republic of China
|
2022YFE0138900
|
|
2
|
Shanghai Municipality
|
19JC1410500
|
|
3
|
National Natural Science Foundation of China
|
YCBK2024004
|
The electrocatalytic reduction of carbon dioxide (CO2RR) to valuable products presents a promising solution for addressing global warming and enhancing renewable energy storage. Herein, we construct a novel Ni3ZnC0.7/Ni heterostructure electrocatalyst, using an electrospinning strategy to prepare metal particles uniformly loaded on nitrogen-doped carbon nanofibers (CNFs). The incorporation of zinc (Zn) into nickel (Ni) catalysts optimizes the adsorption of CO2 intermediates, balancing the strong binding affinity of Ni with the comparatively weaker affinity of Zn, which mitigates over-activation. The electron transfer within the Ni3ZnC0.7/Ni@CNFs system facilitates rapid electron transfer to CO2, resulting in great performance with a faradaic efficiency for CO (FECO) of nearly 90% at −0.86 V versus the reversible hydrogen electrode (RHE) and a current density of 17.51 mA cm−2 at −1.16 V versus RHE in an H-cell. Furthermore, the catalyst exhibits remarkable stability, maintaining its crystal structure and morphology after 50 h of electrolysis. Moreover, the Ni3ZnC0.7/Ni@CNFs is used in the membrane electrode assembly reactor (MEA), which can achieve a FECO of 91.7% at a cell voltage of −3 V and a current density of 200 mA cm−2 at −3.9 V, demonstrating its potential for practical applications in CO2 reduction.