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Surface passivation of Ni‐based electrocatalysts during the electrocatalytic urea oxidization reaction (UOR) renders them impractical and inefficient for applications requiring high current densities. Herein, an efficient strategy to suppress passivation of Ni(OH)x nanosheets is demonstrated by modulating the near‐surface properties using plasma immersion ion implantation, and more importantly, the...
Passivation Suppression
In article number 2313680, Chao Huang, Haozhi Wang, Paul K. Chu, and co‐workers present a La plasma immersion ion implantation strategy to modulate the near‐surface properties of nickel hydroxide nanosheets, resulting in an elevated current output in electrocatalytic urea oxidization. The stabilizing effect of the implanted La ions on protons in active NiOOH mitigates the competitive...