The invention discloses a preparation method of a three-dimensional
layered structure Fe-doped Ni-MOF nano-array (Fe0.1-Ni-MOF / NF) which is grown in situ on foamed
nickel and has high
regular array.
Nickel foam is used as a conductive substrate. The NiFe-LDH nano-array (NiFe-LDH / NF) firstly grows by a hydrothermal method, and then
terephthalic acid is used as an organic ligand to convert a NiFe-LDH / NF precursor template to Fe0.1-Ni-MOF / NF by a solvothermal method, and the product is used as an
electrocatalyst for water oxidation reaction. The
electrocatalyst shows excellent catalytic activity(eta 100mA cm-2=263mV) in 1M KOH
electrolyte, which is much better than undoped Ni-MOF / NF material (eta 100mA cm-2=298mV). The invention fully utilizes the
doping introduction
impurity level to regulate the electronic configuration and induce the
synergy effect between metals, and the highly regularly arranged
layered structure nano-array reduces the series resistance, exposes more active sites and promotes the
diffusion of electrolytes and evolved gases. A novel energy-transduction material with high electrocatalytic activity, good cycle stability, durability and low cost is constructed.