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A Highly-Efficient Oxygen Evolution Electrocatalyst Derived from a Metal-Organic Framework and Ketjenblack Carbon Material

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Moon,  Gun-Hee
Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Extreme Materials Research Center, Korea Institute of Science and Technology (KIST);

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Budiyanto,  Eko
Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Tüysüz,  Harun
Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Öztürk, S., Moon, G.-H., Spieß, A., Budiyanto, E., Roitsch, S., Tüysüz, H., et al. (2021). A Highly-Efficient Oxygen Evolution Electrocatalyst Derived from a Metal-Organic Framework and Ketjenblack Carbon Material. ChemPlusChem, 86(8), 1106-1115. doi:10.1002/cplu.202100278.


Cite as: https://hdl.handle.net/21.11116/0000-0008-DB6A-B
Abstract
The composite of the metal-organic framework (MOF) Ni(Fe)-MOF-74 and the highly conductive carbon material ketjenblack (KB) could be easily obtained from the in-situ MOF synthesis in a one-step solvothermal reaction. The composite material features a remarkable electrochemical oxygen evolution reaction (OER) performance where the overpotential at 10 mA/cm2 and the current density at 1.7 VRHE are recorded as 0.274 VRHE and 650 mA/cm2, respectively, in 1 mol/L KOH. In particular, the activation of nickel-iron clusters from the MOF under an applied anodic bias steadily boosts the OER performance. Although Ni(Fe)-MOF-74 goes through some structural modification during the electrochemical measurements, the stabilized and optimized composite material shows excellent OER performance. This simple strategy to design highly-efficient electrocatalysts, utilizing readily available precursors and carbon materials, will leverage the use of diverse metal-organic complexes into electrode fabrication with a high energy conversion efficiency.