Hydrogen-etched CoS<sub>2</sub> to produce a Co<sub>9</sub>S<sub>8</sub>@CoS<sub>2</sub> heterostructure electrocatalyst for highly efficient oxygen evolution reaction
Yucan Dong, Jiaqi Ran, Qun Liu, Guoqiang Zhang, Xingdong Jiang, Daqiang Gao
Abstract
Herein, we report the outstanding OER performance of Co 9 S 8 @CoS 2 heterojunctions synthesized by hydrogen etched CoS 2 , where the optimized heterojunction shows a low η 50 of 396 mV and a small Tafel slope of 181.61 mV dec −1 .
Topics & Concepts
ElectrocatalystHeterojunctionOxygen evolutionOxygenChemistryHydrogenInorganic chemistryMaterials scienceAnalytical Chemistry (journal)Physical chemistryEnvironmental chemistryOptoelectronicsElectrochemistryElectrodeOrganic chemistryElectrocatalysts for Energy ConversionElectrochemical Analysis and ApplicationsAdvanced battery technologies research