A kind of nickel-based basic nickel carbonate thin film material and 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 expensive ruthenium materials, limit the popularization of supercapacitors, etc., and achieve large contact area, high capacity and speed. , the effect of strong adhesion

Active Publication Date: 2015-10-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ruthenium material required for large-capacity capacitors in battery-capacitor hybrid systems in electric vehicle power sources is very expensive, which is also a very critical factor that limits the popularity of supercapacitors

Method used

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  • A kind of nickel-based basic nickel carbonate thin film material and preparation method and application thereof
  • A kind of nickel-based basic nickel carbonate thin film material and preparation method and application thereof
  • A kind of nickel-based basic nickel carbonate thin film material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Use nickel foam sheets with a purity of 95wt% as the substrate, cut them into pieces of 10*15cm in size, ultrasonically clean them with concentrated hydrochloric acid with a mass concentration of 30% for 50 seconds, and then ultrasonically clean them with deionized water for 3 times, and then use absolute ethanol Ultrasonic cleaning once, put into 60 ℃ oven and dry for later use;

[0030] 2) Dilute 58.15g Ni(NO 3 ) 2 Prepare 1000ml nickel nitrate solution; then use deionized water to dissolve 18.65gNaOH and 17.5gNa 2 CO 3 Prepare 200ml of alkali solution; put the foamed nickel sheet treated in step 1) into the nickel nitrate solution, then add the alkali solution drop by drop under stirring until the pH value is 9.5, then transfer it to a polytetrafluoroethylene reactor, put Put it into an oven and react at 90°C for 6h; after the reaction, take out the nickel foam sheet, ultrasonically clean the excess sediment on the surface with deionized water, and dry at 60°C ...

Embodiment 2

[0043] A. Use a foamed nickel sheet with a purity of 98wt% as the substrate, cut it into a piece of 10*15cm size, clean it ultrasonically with 30wt% concentrated hydrochloric acid for 50 seconds, then ultrasonically clean it 3 times with deionized water, and clean it once with absolute ethanol. Dry it in a 60°C oven for later use;

[0044] B. Dissolve 58.16gNi(NO 3 ) 2 Prepare 800ml of nickel nitrate solution, then use deionized water to dissolve 18.7gNaOH and 15.5gNa 2 CO 3 Prepare 225ml of alkali solution; put the foamed nickel sheet treated in step A into the nickel nitrate solution, then add the alkali solution drop by drop under stirring until the pH value is 9, then transfer them together to a 1000ml beaker, and seal it with plastic wrap At the mouth of the beaker, stir vigorously in a water bath at 60°C and react for 5 hours. After the reaction, take out the nickel foam sheet and clean it with deionized water ultrasonic waves, put it in an oven, and dry it at 60°C fo...

Embodiment 3

[0048] A. Use a foamed nickel sheet with a purity of 93wt% as the substrate, cut it into a piece of 10*15cm in size, ultrasonically clean it with 36wt% concentrated hydrochloric acid for 50 seconds, then ultrasonically clean it 3 times with deionized water, and then ultrasonically clean it once with absolute ethanol. Dry it in a 60°C oven for later use;

[0049] B. Dissolve 58.1gNi(NO 3 ) 2 Prepare 750ml of nickel nitrate solution, then use deionized water to dissolve 18.67g of NaOH and 15.44g of NaOH 2 CO 3 Prepare 250ml of alkali solution; put the foamed nickel sheet treated in step A into the nickel nitrate solution, then add the alkali solution drop by drop under stirring until the pH value is 8.5, then transfer them together to a 1000ml beaker, and seal it with plastic wrap At the mouth of the beaker, stir vigorously in a water bath at 60°C and react for 5 hours. After the reaction, take out the nickel foam sheet and clean it with deionized water ultrasonic waves, put ...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/10H01G11/30
CPCY02E60/13
Inventor 雷晓东谷耀行王琳娜孙晓明
Owner BEIJING UNIV OF CHEM TECH
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