Recent advances on metal molybdate-based electrode materials for supercapacitor application

Abstract

Metal molybdates have been considered as potential electrode materials in various applications because metal ions can exist in a variety of oxidation states, which offer to increase energy density, improve cycling stability, and extend discharge time. The examination of metal molybdates nanocomposites is covered from several perspectives based on recent publications and research advances. Theoretical analysis of DFT used to find the electronic structure of metal molybdates was followed by an examination of the charge density distribution of the electrolyte ions on the metal molybdate electrode surface. In this review article, we select various types of metal molybdate electrode materials, including single-metal molybdates, metal molybdates/supported carbon (CNT, CNF, and CNS), metal-doped metal molybdates, metal oxide on metal molybdates, combined of single-metal molybdates, mixed nanocomposites of metal molybdates, and metal molybdates combine with polymers. This review may offer some recommendations for enhancing the performance of metal-molybdate-based supercapacitor electrode materials, as well as for assembling metal-molybdate-based materials for upcoming electronic storage devices.