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- Title
Biphasic Transition Metal Nitride Electrode Promotes Nucleophile Oxidation Reaction for Practicable Hybrid Water Electrocatalysis.
- Authors
Zhu, Yin; Qian, Qizhu; Chen, Yanxu; He, Xiaoyue; Shi, Xingwei; Wang, Wentao; Li, Ziyun; Feng, Yafei; Zhang, Genqiang; Cheng, Fangyi
- Abstract
Glycerol electrooxidation (GOR), as a typical nucleophile oxidation reaction, is deemed as a promising alternative anodic route to assist cathodic hydrogen evolution reaction. However, the investigations of high‐performance catalysts and industrial‐scale application of GOR remain a grand challenge. Herein, biphasic Ni3N/Co3N heterostructure nanowires (denoted as Ni3N/Co3N‐NWs) are proposed as an efficient bifunctional catalyst, which realizes a high Faradaic efficiency of 94.6% toward formate production. Importantly, the flow electrolyzer achieves an industry‐level current density of 1 A cm−2 at 2.01 V with impressive stability for steady running over 200 h, realizing lower electricity expense of 4.82 kWh m−3H2 and energy saving efficiency of 9.7%, as well as outstanding co‐production rates of 11 and 21.4 mmol cm−2 h−1 toward formate and H2, respectively. Theoretical calculations reveal that the efficient electron transfer on Ni3N/Co3N heterointerfaces simultaneously optimizes nucleophile reaction tendency and glycerol dehydrogenation kinetics, thus contributing to excellent GOR performance.
- Subjects
TRANSITION metal nitrides; HYDROGEN evolution reactions; DEHYDROGENATION kinetics; ELECTROCATALYSIS; OXIDATION; CHARGE exchange
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 25, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202300547