Preparation method of SnS2 nanoplate anode material of a lithium-ion battery

Abstract

The invention discloses a preparation method of SnS2 nanoplate anode material of a lithium-ion battery, comprising the following steps: dissolving L-cysteine in deionized water, then adding stannic chloride and fully stirring the solution to dissolve the stannic chloride; transferring the mixed solution in a reaction kettle with a polytetrafluoroethylene tank to react hydrothermal reaction at 180-220 DEG C for 8-12h, then cooling to the room temperature, centrifugalizing the products to obtain precipitate, cleaning and drying the precipitate fully to obtain the SnS2 nanoplate anode material of a lithium-ion battery; wherein, the molar ratio of L-cysteine to stannic chloride is 4:1-8:1. The SnS2 nanoplate anode material of a lithium-ion battery prepared by the method of the invention has high electrochemical capacity and good cyclic stability.

Description

A kind of preparation method of lithium-ion battery SnS2 nano sheet negative electrode material technical field The invention relates to a preparation method of lithium-ion battery electrode materials, in particular to a preparation method of lithium-ion battery SnS2 nanosheet negative electrode materials, and belongs to the technical fields of inorganic material synthesis and new energy. Background technique Lithium-ion batteries have excellent properties such as high specific energy, no memory effect, and environmental friendliness, and have been widely used in portable mobile appliances such as mobile phones and notebook computers. As a power battery, lithium-ion batteries also have broad application prospects in electric bicycles and electric vehicles. At present, graphite materials (such as: graphite microspheres, natural modified graphite and artificial graphite, etc.) are mainly used as negative electrode materials for lithium-ion batteries. These graphite materials...

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Problems solved by technology

But so far, the one-step aqueous synthesis of SnS2 nanosheet anode materials for lithium-ion batteries using a solution containing L-cysteine ​​and SnCl4 has not been reported.

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