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February 5, 2026Angewandte Chemie International Edition

Electron Delocalization in Ni–Co Active Pairs for Efficient and Robust Urea Electrooxidation

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Authors

CXChaoyue XieCZChanghui ZhouYZYan Zhang

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Overview

Demonstrates enhanced urea oxidation performance in a catalyst, indicating potential for sustainable energy solutions.

Key Points

  • The research aims to enhance the urea oxidation reaction (UOR) performance of Ni(OH)2 by achieving electron delocalization through Co doping.
  • Constructed electron-delocalized Ni–Co active pairs by doping Ni(OH)2 with Co and integrating with a CoNi alloy.
  • Examined charge transfer effects on Ni II 3d electrons to facilitate transformations between Ni II and Ni III.
  • Measured UOR potentials and catalytic stability across a range of current densities.
  • Achieved an ultralow UOR potential of 1.288 V RHE at 10 mA cm −2, outperforming previous configurations.
  • Demonstrated record stability of 2100 hours at varied current densities of 10–500 mA cm −2.
  • Enabled energy-saving hydrogen production in a urea/urine electrolyzer, with outputs of 3.68/3.74 kW h m −3 at 100 mA cm −2.

Cite This Study

Xie et al. (2026) studied this question.

synapsesocial.com/papers/6984358ff1d9ada3c1fb48c0https://doi.org/10.1002/anie.202525119
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