Long-range electron-rich optimization of Cl doped LaCoO3 catalyst for efficient electrocatalytic water oxidation

Fei Jiang; Jiaye Li; Yingying Liu; Kun Hu; Yan Lin; Chao Feng; Yuan Pan

doi:10.1007/s11705-025-2603-9

Front. Chem. Sci. Eng. ›› 2025, Vol. 19 ›› Issue (9) : 90 DOI: 10.1007/s11705-025-2603-9

RESEARCH ARTICLE

Long-range electron-rich optimization of Cl doped LaCoO₃ catalyst for efficient electrocatalytic water oxidation

Fei Jiang ¹^,^‡
, Jiaye Li ¹^,^‡
, Yingying Liu ¹
, Kun Hu ¹
, Yan Lin ²^,^†
, Chao Feng ³^,^†
, Yuan Pan ¹^,^†

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Abstract

Doped perovskite oxides are efficient electrocatalysts for water oxidation; however, the mechanism of O-site doping remains unclear. This study proposes a long-range electron-rich optimization mechanism for Cl doped LaCoO₃, involving the formation of ultra-long Co–Cl bonds as a result of lattice distortion induced by Cl doping at the O site. This catalyst exhibited excellent oxygen evolution reaction activity and stability. Theoretical calculations revealed that the ultra-long Co–Cl bond enables an electron-rich state at the Co sites, weakening the Co–O lattice bonding and facilitating the conversion of lattice O into bulk-phase O species, thus enhancing the performance of oxygen evolution reaction. This study introduces a novel regulatory mechanism for doped perovskite oxide catalysts to enhance water oxidation.

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Keywords

electrocatalysts / perovskite oxides / single site / oxygen evolution reaction

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Fei Jiang, Jiaye Li, Yingying Liu, Kun Hu, Yan Lin, Chao Feng, Yuan Pan. Long-range electron-rich optimization of Cl doped LaCoO₃ catalyst for efficient electrocatalytic water oxidation. Front. Chem. Sci. Eng., 2025, 19(9): 90 DOI:10.1007/s11705-025-2603-9