Lithium doped nickel oxide nanocrystals with a tuned electronic structure for oxygen evolution reaction
Ziyi Xiao, Wei Zhou, Ning Zhang, Chengan Liao, Shicheng Huang, Guoxin Chen, Gen Chen, Min Liu, Xiaohe Liu, Renzhi Ma
Abstract
The electronic structure of catalysts influences the electrocatalytic behavior. Herein, the electronic structure of NiO nanocrystals is modified by doping with a small amount of Li+. The Li+ doped NiO nanocrystals show much better OER activity than pristine NiO and LiNiO2, which is a result of tuned Fermi levels, stronger hybridization between Ni 3d and O 2p, and narrowed energy band gap. This work provides a facile strategy to regulate NiO electronic energy bands to promote OER performance.
Topics & Concepts
Non-blocking I/ONickel oxideNanocrystalDopingMaterials scienceLithium (medication)NickelOxideOxygen evolutionOxygenElectronic structureChemical engineeringInorganic chemistryNanotechnologyChemistryPhysical chemistryCatalysisMetallurgyElectrochemistryOptoelectronicsComputational chemistryElectrodeBiochemistryEndocrinologyOrganic chemistryEngineeringMedicineElectrocatalysts for Energy ConversionAdvanced Memory and Neural ComputingElectrochemical Analysis and Applications