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Co2Al/Co2Mn electrode composite material and preparation method thereof

A composite material and electrode technology, which is applied in the field of electrochemistry, can solve the problems of low value, low energy density and power density, and low stability of supercapacitors, and achieve the effect of high energy density and power density and good stability

Active Publication Date: 2020-08-07
ANHUI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, at present, the stability of the supercapacitor assembled after the composite of metal double hydroxide material and other materials is not high, the energy density and power density are not high, and the value of practical application is not great.

Method used

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  • Co2Al/Co2Mn electrode composite material and preparation method thereof
  • Co2Al/Co2Mn electrode composite material and preparation method thereof
  • Co2Al/Co2Mn electrode composite material and preparation method thereof

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings and examples, and the contents of the examples are not intended to limit the protection scope of the present invention.

[0041] figure 1 shows the Co of the present invention 2 Al / Co 2 Schematic diagram of the synthesis process of Mn nanocomposites. Such as figure 1 Shown, the Co of the present invention 2 Al / Co 2 The preparation method of Mn electrode composite material comprises the following steps:

[0042] First, the nickel foam is pretreated.

[0043] Specifically: Cut the nickel foam into a size of 1cm×1cm×0.1cm, and then use 3M (that is, mol L -1 ) of HCl for 10 min. Wash with deionized water and absolute ethanol three times for 15 min each. That is, first wash with deionized water for 15 minutes, then wash with absolute ethanol for 15 minutes, and wash back and forth 3 times. The nickel foam after reciprocating washing 3 times was vacuum dried at 60° C....

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Abstract

The invention relates to a preparation method of a Co2Al / Co2Mn electrode composite material. The method comprises the following steps: (1) putting foamed nickel into water in which cobalt nitrate hexahydrate, manganese chloride tetrahydrate and urea are dissolved, transferring the foamed nickel into a reaction kettle, carrying out hydrothermal treatment, and cleaning and drying the foamed nickel subjected to the hydrothermal treatment; and (2) adding the treated clean foamed nickel into an aqueous solution containing cobalt nitrate hexahydrate, aluminum nitrate nonahydrate and urea, carrying out hydrothermal treatment again, and cleaning and drying the foamed nickel subjected to the hydrothermal treatment to obtain the Co2Al / Co2Mn electrode composite material. According to the invention, the Co2Al / Co2Mn composite material is directly modified on the foamed nickel electrode by a hydrothermal method, and a binder and a conductive agent do not need to be added in the modification process,so that the internal resistance of the electrode is reduced, the electrode material with high specific capacity is obtained, and the material is good in stability; the material can be used for assembling an asymmetric supercapacitor, and the capacitor has relatively high energy density and power density, relatively good stability and practical applicability.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and specifically discloses a Co 2 Al / Co 2 Preparation method of Mn electrode composite material and application in supercapacitor. Background technique [0002] With the advancement of science and technology and the expansion of the global population, energy and environmental issues have become the focus of widespread attention, and are also the core of the sustainable development strategy of contemporary society and an important factor affecting the development of energy technology in the world. Judging from the existing forms of energy utilization, electric energy, as the final form of energy utilization, has already become a huge driving force for social material production and human development. [0003] In recent decades, the development of various small discrete mobile power sources has increased the utilization forms and application range of electric energy. With the rapid development of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/26H01G11/30H01G11/86
CPCH01G11/24H01G11/26H01G11/30H01G11/86Y02E60/13
Inventor 朱雪珍陶海升李茂国王银玲
Owner ANHUI NORMAL UNIV