A binuclear Co-based metal–organic framework towards efficient oxygen evolution reaction
Ning Liu, Qiaoqiao Zhang, Jingqi Guan
Abstract
The search for low-cost and high-performance electrocatalysts for oxygen evolution reaction (OER) has aroused enormous research interest in the last few years. Reported herein is the topotactic construction of a binuclear Co-based metal-organic framework (Co2-tzpa) using a solvothermal reaction. Prominently, as a porous catalyst, Co2-tzpa holds its activity for at least 25 hours and exhibits low OER overpotentials of 336 and 396 mV to achieve the current density of 10 mA cm-2 in 1 M KOH and 0.1 M KOH, respectively. The excellent OER performance should be attributed to each cobalt site coordinated with two tetrazolate N atoms.
Topics & Concepts
Oxygen evolutionOxygenMetal-organic frameworkChemistryMetalOxygen atomCurrent densityInorganic chemistryPhysical chemistryElectrodeElectrochemistryMoleculeOrganic chemistryPhysicsQuantum mechanicsAdsorptionElectrocatalysts for Energy ConversionFuel Cells and Related MaterialsAdvanced Memory and Neural Computing