Si/MoS2 electrode material preparation method

Abstract

The invention discloses a Si / MoS2 electrode material preparation method. The preparation method comprises the following steps of preparing Si quantum dots; mixing the Si quantum dots with ammonium molybdate and urea; and finally, acquiring a Si / MoS2 electrode material. Electrochemical performance of the Si / MoS2 electrode material is superior to that of single MoS2, and when current density is 5A g<-1>, a specific capacitance of Si / MoS2 is 574.4 F g<-1> and is much higher than a specific capacitance 82.2 F g<-1> of MoS2. Compared with the MoS2, by using the material prepared in the invention, apore between Si / MoS2 nanosheets becomes large, a relative position between the nanosheets becomes tighter, and the nanosheets are distributed in a mutually staggered and mutually attached relationship so that electrolyte ions are in tighter contact with an active substance, and a Faraday reaction on a surface of an electrode is promoted.

Description

technical field

[0001] The invention belongs to the field of electrode material preparation, in particular to a Si / MoS 2 Electrode material preparation method. Background technique

[0002] Si quantum dots are a material with many advantages that have been developed in recent years. The lower preparation cost lays the foundation for the rapid application of Si quantum dots in actual production, and the lower toxicity provides security for Si quantum dots in experimental research. The chemical properties provide support for its research on electrical properties.

[0003] Transition metal molybdenum disulfide (MoS) 2 ) is a glossy black powder, there are covalent bonds and van der Waals forces between layers and layers respectively, and it is a material of great research value. Due to the existence of weak van der Waals forces, electrolyte ions are easy to enter MoS 2 middle. In addition, there are many valence states of Mo ions, which promote the occurrence of Faradaic re...

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