Atomic Zn‐Doping Induced Sabatier Optimum in NiZn0.03 Catalyst for CO2 Electroreduction at Industrial‐Level Current Densities

The Sabatier principle defines the essential criteria for an ideal catalyst in heterogeneous catalysis, while reaching the Sabatier optimum is still challenging in catalyst design. Herein, an elegant strategy is described to reach the Sabatier optimum of Ni electrocatalyst in CO2 reduction reaction...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2024-03, Vol.20 (9), p.e2306945-n/a
Main Authors: Tuo, Yongxiao, Lu, Qing, Liu, Wanli, Wang, Min, Zhou, Yan, Feng, Xiang, Wu, Mingbo, Chen, De, Zhang, Jun
Format: Article
Language:English
Subjects:
Bimetals
binding energy
Bonding strength
Carbon dioxide
Catalysis
Catalysts
Catalytic activity
Chemical reduction
CO2 electroreduction
Doping
d‐band center
Electrocatalysts
Electrolysis
Electrowinning
NiZn bimetal
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Summary:The Sabatier principle defines the essential criteria for an ideal catalyst in heterogeneous catalysis, while reaching the Sabatier optimum is still challenging in catalyst design. Herein, an elegant strategy is described to reach the Sabatier optimum of Ni electrocatalyst in CO2 reduction reaction (CO2RR) by atomically Zn doping. The incorporation of 3% Zn single atom into Ni lattice leads to the moderate degrade of d‐band center via Ni–Zn electronic coupling, which balances the bonding strengths of *COOH and *CO, resulting in a relative low energy barrier for CO2 activation while not being substantially poisoned by CO. Consequently, NiZn0.03/C exhibits unique catalytic activity (jCO >100 mA cm−2 at −0.6 V), wide potential range for selective CO production (FECO >90% from −0.65 to −1.15 V), and outstanding long‐term stability (FECO >90% during 85 h electrolysis at −0.85 V). The results provide valuable insights for the rational fabrication of superior non‐noble bimetallic electrocatalysts in CO2 electroreduction. This paper presents a Sabatier principle‐guided engineering of NiZn bimetallic catalyst for the unique CO2 electroreduction performance. The as‐designed NiZn0.03/C exhibits wide potential range and long‐term stability to keep FECO>90% at industrial current densities. The electron structure‐adsorption‐performance modulation mechanism described herein provides a benchmark for the non‐noble bimetallic catalyst design in CO2 electroreduction.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.202306945