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Preparation method for aluminum-doped zinc oxide (AZO) nano array

A technology of aluminum-doped zinc oxide and nano-array, which is applied in the manufacture of hybrid/electric double-layer capacitors and electrodes of hybrid capacitors, can solve the problem of effectively ensuring the doping uniformity of reactant morphology and the difficulty of electron transmission in polycrystalline films. , complex process and other issues, to achieve the effect of good crystallinity and chemical orientation, low cost and simple process

Active Publication Date: 2015-12-02
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

The traditional atomic layer deposition doping and magnetron sputtering doping technologies are complicated in process, high in cost, and most of them form polycrystalline thin films that are not easy to transport electrons.
J. Liu et al. (LiuJ, XuL, WeiB, et al. One-stephydrothermalsynthesisandopticalpropertiesofaluminiumdopedZnOhexagonalnanoplatesonazincsubstrate.CrystEngComm, 2011, 13: 1283-1286) successfully synthesized Al-doped ZnO nanosheets by a fast, direct and low-cost low-temperature hydrothermal method, but due to The change of the reactant concentration in the reaction chamber makes it difficult to effectively ensure the morphology of the reactant and the uniformity of doping

Method used

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  • Preparation method for aluminum-doped zinc oxide (AZO) nano array
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  • Preparation method for aluminum-doped zinc oxide (AZO) nano array

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preparation example Construction

[0036] A method for preparing aluminum-doped zinc oxide nano-arrays. The preparation method is to inject growth sources and doping sources at a continuous constant rate, and precisely control the concentration of chemical reaction liquid, so that the aluminum-doped nano-array with high carrier concentration can be controlled and prepared. Zinc oxide array, and composite with nickel oxide material to obtain high-capacity capacitor electrode material, the specific steps of the preparation method are as follows:

[0037] (1) Clean the glass and deposit an Al-doped zinc oxide film as a seed layer by magnetron sputtering, and place the substrate seed layer upwards in the liquid-phase chemical reaction chamber of the continuous growth device;

[0038] (2) Prepare a mixed aqueous solution of 50mM zinc nitrate and 5mM aluminum nitrate and inject it into one of the syringes of the continuous growth device used;

[0039] (3) Prepare 50mM hexamethylenetetramine as a base salt and inject ...

Embodiment 1

[0046] (1) Clean the glass and deposit an Al-doped zinc oxide film as a seed layer by magnetron sputtering, and place the substrate seed layer upwards in the liquid-phase chemical reaction chamber of the continuous growth device;

[0047] (2) Prepare a mixed aqueous solution of 50mM zinc nitrate and 5mM aluminum nitrate and inject it into one of the syringes of the continuous growth device used;

[0048] (3) Prepare 50mM hexamethylenetetramine as a base salt and inject it into another syringe of the device;

[0049] (4) Keep the temperature of the liquid-phase chemical reaction chamber at 95°C by heating in a water bath, set the constant injection rate (6ml / h) and constant injection time (16h) of the reaction source, and start the continuous flow injection method to prepare aluminum-doped ZnO arrays;

[0050] (5) After the hydrothermal reaction is over, stop heating the reaction chamber, wait for it to cool to room temperature, take out the sample, rinse it with deionized wate...

Embodiment 2

[0053] The other steps are unchanged as in Example 1, and will not be repeated here, but step (3) is changed to: prepare 50mM hexamethylenetetramine and 5M sodium hydroxide solution respectively as lye, and keep the concentration of hexamethylenetetramine Adding amount is constant, injects in another syringe of device after the lye pH is adjusted to 5.00 by changing the adding amount of sodium hydroxide.

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Abstract

The invention provides a preparation method for an aluminum-doped zinc oxide (AZO) nano array. The method is performed as follows: precisely controlling the concentration of chemical reaction solution by continuously injecting growing sources and doping sources at a constant speed to controllably prepare an aluminum-doped zinc oxide (AZO) array with high carrier concentration; compounding the aluminum-doped zinc oxide (AZO) array and a nickel oxide material to obtain a capacitor electrode material with high electricity capacity. The capacitor electrode material with high electricity capacity is attained in such a way that an aluminum-doped zinc oxide (AZO) array with high conductivity prepared by a continuous flow injecting method and a nickelnanosheet material with poor conductivity but high electricity capacity are combined. In comparison to a conventional hydrothermal method, the carrier concentration obtained from the preparation method provided in the invention increases three orders of magnitude. In the method, an aluminum-doped zinc oxide (AZO) material with high carrier concentration and a nickel oxide with poor conductivity are combined such that the advantages of the two materials are brought into full play and the electricity capacity of a capacitor is substantially increased. Beyond that, the continuous flow injecting and doping method provides a new idea for controllable precise doping. The method is simple in operation, cost-effective and enjoys great application prospects.

Description

technical field [0001] The invention relates to the technical field of electrode material properties, in particular to a method for preparing aluminum-doped zinc oxide nano-arrays. Background technique [0002] In today's society, under the pressure of energy crisis and serious environmental pollution, energy storage is particularly important. As a new type of energy storage device, supercapacitor has the advantages of high energy density, short charge and discharge time, and long cycle life, and has been widely studied and applied in various electronic products. The key factor that determines the performance of supercapacitors is the electrochemical performance of electrode materials, so the synthesis of an electrode material with excellent performance has become a research hotspot. Traditional supercapacitor electrode materials can be divided into three categories, carbon materials, conductive polymer materials, and transition metal compounds. Among them, transition metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/46
Inventor 张跃郑鑫闫小琴孙一慧
Owner UNIV OF SCI & TECH BEIJING
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