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Nanoscale Trimetallic Metal–Organic Frameworks Enable Efficient Oxygen Evolution Electrocatalysis
Author(s) -
Li FeiLong,
Shao Qi,
Huang Xiaoqing,
Lang JianPing
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201711376
Subject(s) - tafel equation , overpotential , electrocatalyst , oxygen evolution , metal organic framework , materials science , catalysis , chemical engineering , nickel , nanotechnology , annealing (glass) , nanoscopic scale , template , water splitting , inorganic chemistry , chemistry , metallurgy , electrode , electrochemistry , organic chemistry , photocatalysis , adsorption , engineering
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/Ni 2.4 /Co 0.4 ‐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).