Silylene-copper-silylene composite material, preparation method and application thereof and lithium ion battery

A composite material and silicene technology, which is applied in secondary batteries, battery electrodes, circuits, etc., can solve the problems of complex preparation methods and uneven silicene sheets, and achieve low cost, low energy consumption, and large-scale preparation Effect
CN110600688AInactive Publication Date: 2019-12-20EAST CHINA UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
EAST CHINA UNIV OF SCI & TECH
Publication Date
2019-12-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a silylene-copper-silylene composite material, preparation method and application thereof and a lithium ion battery. The preparation method of the silylene-copper-silylene composite material comprises the following steps of obtaining the silylene-copper-silylene composite material by electro-deposition of a silicon source and a copper source in an ionic liquid, wherein thesilicon source is SiCl4, copper in the copper source is divalent copper, the concentration of the copper source in the ionic liquid is (0.002-0.003)mol / L, and the potential of electro-deposition is (-1.9)-(-2.1) V. The ionic liquid is used as a medium, the silylene-copper-silylene composite material is prepared in one step by an electro-deposition method, and the silylene-copper-silylene compositematerial has the advantages of simple and convenient process, low cost, circulation and no pollution. A silylene piece layer in the prepared silylene-copper-silylene composite material is highly dispersed, and the electrode has favorable conductivity and excellent electrochemical performance.
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Description

technical field

[0001] The invention relates to a silicene-copper-silicene composite material, a preparation method, an application and a lithium ion battery. Background technique

[0002] Sicene is an allotrope of silicon, which has a two-dimensional layered structure similar to graphene. Unlike graphene, the silicon atoms in the silicon film are not completely on the same plane, but have sp3 hybridization. Low buckling structure. Calculations predict that silicene has massless Dirac fermions, quantum spin Hall effect, and superconductivity. These properties are of great significance for the design and application of silicon-based nanoelectronic and spintronic devices.

[0003] G.A. Tritsaris et al. used first-principle calculations to study the interaction between lithium and silicon in independent single-layer and double-layer silicene model electrodes, determined the strong binding sites of lithium ions, calculated the energy barrier for lithium ion diffusion, and comp...

Claims

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