Solvent dispersion triggered the formation of NiFe-gel as an efficient electrocatalyst for enhancing the oxygen evolution reaction
Hongkai Wang, Weihuang Zhu, Qi Xue, Changhao Wang, Kaiqiang Liu
Abstract
The inexpensive metal-based electrocatalysts with large surface areas are in high demand to overcome the sluggish kinetics of the anodic oxygen evolution reaction (OER) in electrocatalytic water splitting. Here we report that a series of NiFe based gels were prepared by a solvent dispersion triggered gelation method, where Ni2Fe-gel exhibits a specific surface area of 216.9 m2 g-1, and a low overpotential of 245 mV at 10 mA cm-2 in an alkaline electrolyte.
Topics & Concepts
OverpotentialElectrocatalystDispersion (optics)CatalysisSolventElectrolyteOxygen evolutionInorganic chemistryMetalChemistryOxygenMaterials scienceAnalytical Chemistry (journal)Physical chemistryElectrochemistryElectrodeOrganic chemistryPhysicsOpticsElectrocatalysts for Energy ConversionAdvanced battery technologies researchElectrochemical Analysis and Applications