In Situ Synthesis of MOF‐74 Family for High Areal Energy Density of Aqueous Nickel–Zinc Batteries

Abstract Limited by single metal active sites and low electrical conductivity, designing nickel‐based metal–organic framework (MOF) materials with high capacity and high energy density remains a challenge. Herein, a series of bi/multimetallic MOF‐74 family materials in situ grown on carbon cloth (CC) by doping M x + ions in Ni‐MOF‐74 is fabricated: NiM‐MOF@CC (M = Mn 2+ , Co 2+ , Cu 2+ , Zn 2+ , Al 3+ , Fe 3+ ), and NiCoM‐MOF@CC (M = Mn 2+ , Zn 2+ , Al 3+ , Fe 3+ ). The type and ratio of doping metal ions can be adjusted while the original topology is preserved. Different metal ions are confirmed by X‐ray absorption fine structure (XAFS). Furthermore, these Ni‐based MOF electrodes are directly utilized as…

• NN
  National Natural Science Foundation of China

  Awards: U1930402, 21976014, U1904215
• NS
  Natural Science Foundation of Jiangsu Province

  Award: BK20200044
• PA
  Priority Academic Program Development of Jiangsu Higher Education Institutions