Activating and Stabilizing Lattice Oxygen via Self-Adaptive Zn–NiOOH Sub-Nanowires for Oxygen Evolution Reaction

Efficient and durable catalysts for the oxygen evolution reaction are essential for realizing the large-scale application of water electrolysis technologies. Here, we report a novel Zn-doped NiOOH subnanowires (Zn–NiOOH SNWs) catalyst synthesized via the electrochemical reconstruction of Zn–NiMoO4 SNWs. The inclusion of Zn triggers a transition in the oxygen evolution reaction mechanism of NiOOH from the adsorbate evolution mechanism to the lattice oxygen mechanism, resulted from Zn’s adaptive adjustment of coordination types, which also improves the reaction energetics, thereby enhancing the stability and activity. Furthermore, the subnanowire structure provides further stabilization of the lattice oxygen in…

• NN
  National Natural Science Foundation of China

  Awards: 22122304, 22241502, 22250710677, 22305137, 22035004
• NK
  National Key Research and Development Program of China

  Award: 2022YFA1503000