Nickel-base basic nickel carbonate thin-film material as well as preparation method and application thereof

A thin-film material, nickel carbonate technology, applied in the growth of polycrystalline materials, chemical instruments and methods, single crystal growth, etc., can solve the problems of limiting the popularization of supercapacitors, expensive ruthenium materials, etc., and achieve high capacity and speed, large contact area , good film-forming effect
CN103233268AActive Publication Date: 2013-08-07BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2013-08-07

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Abstract

The invention belongs to the technical field of preparation of electrochemical energy storage materials, and particularly relates to a nickel-base basic nickle carbonate thin-film material as well as a preparation method and an application thereof. The nickel-base basic nickle carbonate thin-film material adopts foamed nickel as a substrate, and in-situ growth of a basic nickel carbonate crystal is implemented on the surface of the substrate, wherein the chemical formula of the basic nickel carbonate is represented as Ni2(OH)2CO3.4H2O; the nickel-base basic nickel carbonate is integral in crystal form and uniform in granularity distribution. The preparation method comprises the following steps of: placing a foamed nickel sheet in a nickel nitride solution, and modulating an aqueous solution and controlling pH, reacting temperature and a reacting duration, so as to realize the in-situ growth of a basic nickel carbonate crystal on the foamed nickel sheet. The nickel source of the basic nickel carbonate thin film growing on the foamed nickel sheet through an in-situ growth method is derived from the substrate surface and the solution, and in comparison with a thin film obtained through simple deposition on the substrate, the thin film is closely bonded with the substrate, stronger in adhesion and difficult to fall.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of electrochemical energy storage materials, and in particular relates to a nickel-based basic nickel carbonate film material and its preparation method and application. Background technique

[0002] Supercapacitors, due to their long service life, low maintenance costs, good temperature characteristics, short charging time, and energy-saving and high-efficiency properties, make them occupy a strong position in today's world's eager demand for efficient and environmentally friendly energy storage materials. Capacitors can be divided into electric double layer capacitors and pseudocapacitors from the perspective of energy storage mechanism. Due to the dependence on the traditional electric double layer energy storage mechanism, the electric double layer capacitor has limited its specific capacity (no more than 250F / g). The energy storage of the pseudocapacitive capacitor mainly comes from the ...

Claims

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