Interfacial Engineering of Pillared Co(II) Metal–Organic Framework@NiMn-Layered Double Hydroxide Nanocomposite for Oxygen Evolution Reaction Electrocatalysis

Clean energy conversion and storage require simple, economical, and effective electrode materials to achieve promising results. The development of high-performance electrocatalysts with adequate stability and cost-effectiveness is essential to ensure low overpotentials toward the oxygen evolution reaction (OER). Herein, a cobalt-based metal–organic framework with 4,4,4-6T14 topology in combination with various ratios of NiMn-layered double hydroxide (Co-MOF@X%NiMn-LDH, X = 5, 10, 20, and 40%) is applied as an effective electrocatalyst for the oxidation of water. The optimum sample, Co-MOF@20%NiMn-LDH nanocomposite, showed an overpotential of 174 mV at a current density of 10 mA cm–2 and a reduced Tafel slope…

• IN
  Iran National Science Foundation

  Award: 4025105
• UO
  University of Maragheh
• NF
  National Foundation of Elites