Preparation of NiMoO4 Nanomaterials by Hydrothermal Method and Their Electrochemical Properties
NiMoO4 nanomaterials have potential applications in new green batteries,supercapacitors,and so on.The hydrothermal method was used to prepare the NiMoO4i nanomaterials.The effects of different reaction temperatures on the surface morphology,structure and electrochemical properties of the prepared materials have been investigated.The results showed that NiMoO4 samples prepared at 150 ℃ for 6 h had nanofiber morphology and exhibited the best supercapacitor performance.When the discharge current density was 0.5 A/g,the specific capacitance reached 600 F/g.The NiMoO4 electrode can still maintain a specific capacitance of 300 F/g even at 10 A/g.In addition,the NiMoO4 electrode presented excellent cycle life,retaining 97％of its initial specific capacitance after 6 000 charge/discharge cycles(at a discharge current density of 5 A/g).The excellent cyclic stability of NiMoO4 makes it become a promising material for high-performance supercapacitors.
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