<i>In situ</i> identification of the electrocatalytic water oxidation behavior of a nickel-based metal–organic framework nanoarray
F.T. Cheng, Zhongjian Li, Lin Wang, Bin Yang, Jianguo Lü, Lecheng Lei, Tianyi Ma, Yang Hou
Abstract
current density for the OER. In situ spectroscopy and operando microscopy visualized the phase transformation behavior of Ce-NiBDC/OG to Ce-doped NiOOH induced by electrochemical activation, which was regarded as the real active site. Mechanistic studies revealed that, for the Ce-NiBDC/OG-derived catalyst, the doping of Ce species in NiOOH significantly increased the adsorption of *OH, and further reduced the energy barriers of the rate-determining step (*OH→*O).
Topics & Concepts
OverpotentialNanosheetOxygen evolutionCatalysisMaterials scienceElectrochemistryNickelMetal-organic frameworkChemical engineeringElectrocatalystMetalAdsorptionInorganic chemistryNanotechnologyChemistryElectrodePhysical chemistryMetallurgyOrganic chemistryEngineeringElectrocatalysts for Energy ConversionElectrochemical Analysis and ApplicationsAdvanced Memory and Neural Computing