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

Title
A Highly-Efficient Oxygen Evolution Electrocatalyst Derived from a Metal-Organic Framework and Ketjenblack Carbon Material
Authors
문건희Secil OzturkAlex SpießEko BudiyantoStefan RoitschHarun TuysuzChristoph Janiak
Issue Date
2021-08
Publisher
ChemPlusChem
Citation
VOL 88, NO 8-1115
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.
URI
http://pubs.kist.re.kr/handle/201004/73631
ISSN
2192-6506
Appears in Collections:
KIST Publication > Article
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