Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 8, Pages 7496-7501Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b00264
Keywords
Metal-organic frameworks; Bimetallic; Electrocatalyst; Nanosphere; Oxygen evolution reaction
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Funding
- National Natural Science Foundation [21575090]
- High-level Teachers in Beijing Municipal Universities in the Period of 13th Five-year Plan [CITTCD20190330]
- Scientific Research Project of Beijing Educational Committee [KM201810028008]
- Youth Innovative Research Team of Capital Normal University
- Capacity Building for Sci-Tech Innovation-Fundamental Scientific Research Funds [19530050179, 025185305000/195]
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Metal-organic frameworks (MOFs) are recently reported with promising perspective to catalyze oxygen evolution reaction (OER) directly, while their wide applications are generally limited by its unsatisfied catalytic activity and stability during the reaction process. Herein, we synthesized Fe and Ni based bimetallic MOFs on 3D nickel foam (NF), i.e. MIL-100(FeNi)/NF, via a solvothermal process to serve directly as highly efficient OER electrocatalysts. The obtained MIL-100(FeNi)/NF requires a low overpotential of 243 mV to deliver the current density of 100 mA cm(-2) under a small Tafel slope value of 30.4 mV dec(-1). Density functional theory (DFT) calculations reveal that the metal-metal coupling effect plays a crucial role in determining the pronounced OER performance of the formed MIL-100(FeNi). Hopefully, the synthetic strategy and proposed model of bimetallic electrocatalysts (MIL-100(FeNi)) could simulate the exploration of more novel bimetallic or multimetallic MOFs toward energy storage/conversion application.
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