Activation of the Lattice Oxygen Mechanism in NiOOH as an Electrocatalyst for the Oxygen Evolution Reaction: The Role of Anion Intercalation
The lattice oxygen mechanism (LOM) of the oxygen evolution reaction (OER) offers significant kinetic advantages over the adsorbed oxygen mechanism. Anion intercalation induces the LOM in NiOOH by enhancing the covalency of lattice oxygen through the modulation of the metal-oxygen electronic state. The relationships between doping mechanisms, such as the size and valence state of anions and the kinetics of the OER, have been clarified. Phosphate-intercalated NiOOH (NiOOH-PO), which benefits from the activated LOM mechanism, has low overpotentials of 195 mV at 10 mA cm<sup>-2</sup> and 274 mV at 50 mA cm<sup>-2</sup>.
Authors
- Jingxian Yu (ORCID: https://orcid.org/0000-0002-6489-5988)
- Shengping Wang (ORCID: https://orcid.org/0000-0003-3064-9348)
- Si–Yi Chen (ORCID: https://orcid.org/0000-0003-2403-4988)
- Xue Han (ORCID: https://orcid.org/0000-0002-0390-422X)
Institutions
- China University of Geosciences (CN)
- Guilin University of Technology (CN)
- Institute of Molecular Functional Materials (CN)
- The University of Adelaide (AU)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-09-10
- DOI
- https://doi.org/10.1021/acsami.5c10726
- Citations
- 1
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.36