Nanowired NiMoO<sub>4</sub>/NiSe<sub>2</sub>/MoSe<sub>2</sub> prepared through <i>in situ</i> selenylation as a high performance supercapacitor electrode
Chengchao Wang, Datong Wu, Yong Qin, Yong Kong
Abstract
After in situ selenylation, hydrothermally synthesized NiMoO4 was partially converted to NiSe2 and MoSe2, and the obtained NiMoO4/NiSe2/MoSe2 nanowires were used as a supercapacitor electrode material. The specific capacitance of the nanowired NiMoO4/NiSe2/MoSe2 was significantly higher than that of NiMoO4 at a current density of 1 A g-1 (955 vs. 489 F g-1). NiMoO4/NiSe2/MoSe2 also exhibited a high capacitance retention of 86.1% after 5000 cycles at 10 A g-1. The high supercapacitive performance of NiMoO4/NiSe2/MoSe2 can be ascribed to the obvious heterointerfaces, rich defects and remarkably increased electrical conductivity after in situ selenylation of NiMoO4.
Topics & Concepts
SupercapacitorTernary operationElectrodeIn situMaterials scienceNanocompositeNanotechnologyChemistryCapacitanceComputer sciencePhysical chemistryOrganic chemistryProgramming languageSupercapacitor Materials and FabricationAdvanced battery technologies researchElectrocatalysts for Energy Conversion