Research Progress of Cathode Materials for Supercapacitors
With the emergence of energy and environmental pressures and the rapid development of electric vehicles,efficient supercapacitors need be developed to store electricity.Existing supercapacitors are faced with the problem of low energy density.Developing new electrode materials with high specific capacitance is an effective way to increase energy density.Transition metal compounds are ideal electrode materials because of their high specific capacitance,abundant oxidation states and low production cost.In this paper,the research progress of transition metal carbonate,transition metal sulfide and their composites as electrode materials for supercapacitors was introduced.
Transition metal carbonateTransition metal sulfideSpecific capacitySupercapacitors
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