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Dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite and preparation method and application thereof

A technology of nanocomposite materials and hydroxides, applied in the field of preparation, double metal hydroxide@nickel molybdate@graphene nanocomposite materials, which can solve the requirements of low energy density and power density, difficult application requirements, and short cycle time and other issues to achieve high energy density and power density, good electrochemical properties, and low production costs

Active Publication Date: 2018-02-09
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, it is found that these traditional electrode materials have more or less their own defects, such as: small active area, poor conductivity, low capacitance, short cycle time, low energy density and power density, due to The existence of these defects makes it difficult to meet the higher application requirements in reality

Method used

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  • Dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite and preparation method and application thereof
  • Dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite and preparation method and application thereof
  • Dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite and preparation method and application thereof

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Embodiment 1

[0036] A method for preparing a double metal hydroxide@nickel molybdate@graphene nanocomposite material, comprising the following steps:

[0037] a. Put the carbon cloth with impurities on the surface into hydrochloric acid, ethanol and double distilled water for 20min ultrasonic cleaning respectively;

[0038] b. Mix 50mL double-distilled water, 2mmol nickel nitrate hexahydrate, 4mmol cobalt nitrate hexahydrate and 8mmol hexamethylenetetramine evenly, then add it into a 90mL reaction kettle, immerse the treated carbon cloth in the mixture, and pour it into the reaction In the kettle, tighten the lid of the kettle, react at 100°C for 10 hours, take out the reaction kettle and cool it to room temperature naturally, rinse it with ethanol and double distilled water in turn, and dry it at room temperature; the array of cobalt-nickel double metal hydroxide nanosheets is obtained;

[0039] c. Dissolve 0.727g nickel nitrate hexahydrate and 0.605g sodium molybdate dihydrate in 70mL do...

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Abstract

The invention provides a dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite and a preparation method and an application thereof. Compared with the prior art, the preparation method disclosed in the invention achieves high product purity, high dispersity, high crystalline form and controllability, low production cost and high reproducibility; the prepared dual-metal hydroxide@ nickel molybdate@ graphene nanocomposite is grown on carbon cloth and can be directly used as a flexible electrode material of a supercapacitor, so that high stability, high specific capacitance, high energy density and power density are realized; and in addition, the carbon cloth has the flexible electrode and foldable and wearable properties, so that the nanocomposite has infinite development in the future wearable electrochemical energy storage equipment.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and specifically relates to a double metal hydroxide@nickel molybdate@graphene nanocomposite material, a preparation method and an application thereof. Background technique [0002] With the rapid development of science and technology and the upgrading of electronic products, the research on supercapacitor electrode materials has aroused great interest of researchers. At present, the traditional supercapacitor electrode materials mainly include the following categories: carbon material electrode materials, conductive polymer electrode materials, and metal oxide electrode materials. However, in practical applications, it is found that these traditional electrode materials have more or less their own defects, such as: small active area, poor conductivity, low capacitance, short cycle time, low energy density and power density, due to The existence of these defects makes it difficult to meet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/36H01G11/46H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/30B82Y30/00B82Y40/00H01G11/36H01G11/46H01G11/86
Inventor 张小俊蒋美文
Owner ANHUI NORMAL UNIV
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