Nanoscale Trimetallic Metal–Organic Frameworks Enable Efficient Oxygen Evolution Electrocatalysis |
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| Authors: | Fei‐Long Li Qi Shao Prof Xiaoqing Huang Prof Jian‐Ping Lang |
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| Institution: | 1. College of Chemistry, Chemical Engineering and Materials Science Soochow University, Jiangsu, China;2. Institution State Key Laboratory of, Organometallic Chemistry, Shanghai Institute of, Organic Chemistry, Chinese Academy of Sciences, Shanghai, China |
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| Abstract: | Metal–organic frameworks (MOFs) are a class of promising materials for diverse heterogeneous catalysis, but they are usually not directly employed for oxygen evolution electrocatalysis. Most reports focus on using MOFs as templates to in situ create efficient electrocatalysts through annealing. Herein, we prepared a series of Fe/Ni‐based trimetallic MOFs (Fe/Ni/Co(Mn)‐MIL‐53 accordingly to the Material of Institute Lavoisier) by solvothermal synthesis, which can be directly adopted as highly efficient electrocatalysts. The Fe/Ni/Co(Mn)‐MIL‐53 shows a volcano‐type oxygen evolution reaction (OER) activity as a function of compositions. The optimized Fe/Ni2.4/Co0.4‐MIL‐53 can reach a current density of 20 mA cm?2 at low overpotential of 236 mV with a small Tafel slope of 52.2 mV dec?1. In addition, the OER performance of these MOFs can be further enhanced by directly being grown on nickel foam (NF). |
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| Keywords: | electrocatalysis metal– organic frameworks nickel oxygen evolution reaction porous materials |
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