Ferrocene-MOFs: Optimizing OER Kinetics for Water Splitting DOI

Aling Zhou,

Jiasui Huang,

Lixia Wang

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Optimizing the adsorption and desorption kinetics of oxygen evolution reaction (OER) is crucial for efficient overall water splitting. Herein, we report a series porous ferrocene-based metal–organic framework (MFc-MOF, M = Co, Ni, Fe, Mn) nanoflowers featuring close π–π stacking lattice structure as model catalysts, explore structure–activity relationship. Operando electrochemical impedance spectroscopy implies that synthesized CoFc-MOF@NF facilitates intermediate desorption. It exhibits an ultralow overpotential 189 mV at 10 mA cm–2 maintains stability 250 h. In splitting device, when serves anode, it yields significantly lower cell voltage than commercial RuO2 shows excellent 100 situ Raman reveals surface transforms into CoFeOOH, OER-active species, while preserving MOF framework. The inner MOF's ferrocene units act electron-transfer mediators. These findings highlight CoFc-MOF@NF's potential leading catalyst sustainable hydrogen production, combining high catalytic activity, rapid kinetics, robust stability. This work presents new approach to balance activity in MOF-based OER catalysts.

Language: Английский

Ferrocene-MOFs: Optimizing OER Kinetics for Water Splitting DOI

Aling Zhou,

Jiasui Huang,

Lixia Wang

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Optimizing the adsorption and desorption kinetics of oxygen evolution reaction (OER) is crucial for efficient overall water splitting. Herein, we report a series porous ferrocene-based metal–organic framework (MFc-MOF, M = Co, Ni, Fe, Mn) nanoflowers featuring close π–π stacking lattice structure as model catalysts, explore structure–activity relationship. Operando electrochemical impedance spectroscopy implies that synthesized CoFc-MOF@NF facilitates intermediate desorption. It exhibits an ultralow overpotential 189 mV at 10 mA cm–2 maintains stability 250 h. In splitting device, when serves anode, it yields significantly lower cell voltage than commercial RuO2 shows excellent 100 situ Raman reveals surface transforms into CoFeOOH, OER-active species, while preserving MOF framework. The inner MOF's ferrocene units act electron-transfer mediators. These findings highlight CoFc-MOF@NF's potential leading catalyst sustainable hydrogen production, combining high catalytic activity, rapid kinetics, robust stability. This work presents new approach to balance activity in MOF-based OER catalysts.

Language: Английский

Citations

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