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Multistage structure cobalt hydroxide electrode material and preparation method therefor

A technology of cobalt hydroxide and electrode materials, which is applied in the field of material chemistry, can solve the problems of unfavorable electron rapid transport, poor specific surface area, and few active sites, so as to overcome the few active sites, high specific capacitance, and small specific surface area Effect

Inactive Publication Date: 2017-05-24
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that the specific surface area is poor and the active sites are few, which is not conducive to the rapid transport of electrons.

Method used

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  • Multistage structure cobalt hydroxide electrode material and preparation method therefor
  • Multistage structure cobalt hydroxide electrode material and preparation method therefor
  • Multistage structure cobalt hydroxide electrode material and preparation method therefor

Examples

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Embodiment 1

[0032] A multi-level structure cobalt hydroxide electrode material and a preparation method thereof, comprising the steps of:

[0033] (1) Preparation of cobalt-aluminum double metal hydroxide

[0034] a. First, at room temperature, add 10mg of cobalt nitrate and 5mg of aluminum nitrate into a 100ml beaker, and add 30ml of deionized water into it and stir for 15min to obtain a mixed solution;

[0035] b. Then add 10mg of urea to the above solution and stir for 15min;

[0036] c. Then transfer the above solution into a high-pressure reactor for hydrothermal reaction at a temperature of 90°C for 12 hours;

[0037] d. After the reaction, cool down to room temperature naturally, centrifuge and wash the sample, and then put it into a freeze dryer for freeze-drying for 24 hours;

[0038] Adopt field emission scanning electron microscope (German Zeiss ultra 55) instrument, the cobalt aluminum double metal hydroxide powder of above-mentioned gained is scanned, and the scanning elect...

Embodiment 2

[0046] A multi-level structure cobalt hydroxide electrode material and a preparation method thereof, comprising the steps of:

[0047] (1) Preparation of cobalt-aluminum double metal hydroxide

[0048] a. First, at room temperature, add 20mg of cobalt nitrate and 10mg of aluminum nitrate into a 100ml beaker, and add 40ml of deionized water into it and stir for 20min to obtain a mixed solution;

[0049] b. Then add 10mg of urea to the above solution and stir for 20min;

[0050] c. Then move the above solution into a high-pressure reactor for hydrothermal reaction at a temperature of 100°C for 16 hours;

[0051] d. After the reaction, cool down to room temperature naturally, centrifuge and wash the sample, and then put it into a freeze dryer for freeze-drying for 30 hours;

[0052] (2) Preparation of multi-level structure cobalt hydroxide

[0053] a. First, add the above-mentioned cobalt-aluminum double metal hydroxide into a 500ml flask at room temperature, and add 100ml of ...

Embodiment 3

[0059] A multi-level structure cobalt hydroxide electrode material and a preparation method thereof, comprising the steps of:

[0060] (1) Preparation of cobalt-aluminum double metal hydroxide

[0061] a. First, at room temperature, add 30mg of cobalt nitrate and 20mg of aluminum nitrate into a 100ml beaker, and add 50ml of deionized water into it and stir for 25min to obtain a mixed solution;

[0062] b. Then add 10mg of urea to the above solution and stir for 25min;

[0063] c. Then transfer the above solution into a high-pressure reactor for hydrothermal reaction at a temperature of 110°C for 18 hours;

[0064] d. After the reaction, cool down to room temperature naturally, centrifuge and wash the sample, and then put it into a freeze dryer for freeze-drying for 36 hours;

[0065] (2) Preparation of multi-level structure cobalt hydroxide

[0066] a. First, add the above-mentioned cobalt-aluminum double metal hydroxide into a 500ml flask at room temperature, and add 150ml...

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Abstract

The invention discloses a multistage structure cobalt hydroxide electrode material and a preparation method therefor. The method comprises the steps: firstly taking cobalt nitrate and aluminium nitrate as a cobalt source and an aluminium source, and mixing the cobalt source and aluminium source with deionized water; secondly adding urea, and carrying out the hydrothermal compounding; finally etching aluminium hydroxide through alkali, and obtaining multistage structure cobalt hydroxide. The material obtained through a hydrothermal method, a freeze drying method and an etching method is good in thermal stability, is high in crystallization degree, and is larger in specific area. The active sites are increased, thereby enabling the specific capacity to be larger. The material is an ideal energy material.

Description

technical field [0001] The invention belongs to the technical field of material chemistry and relates to a cobalt hydroxide electrode material, in particular to a multi-level structure cobalt hydroxide electrode material and a preparation method thereof. Background technique [0002] With the rapid development of the economy, traditional non-renewable energy sources such as oil, natural gas, and coal are increasingly depleted, and at the same time, a large amount of pollution is generated in the process of production and utilization of them, making energy and the environment two major themes in the sustainable development of human beings . Seeking renewable and clean energy is crucial to reducing environmental pollution and promoting sustainable development of human beings. At present, the development momentum of renewable clean energy represented by solar energy is good, and it has great potential for large-scale utilization in the future. However, the key to harnessing r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/86H01M4/48H01M4/1391C01G51/04
CPCC01G51/04H01G11/30H01G11/86H01M4/1391H01M4/483Y02E60/10
Inventor 蔺华林陈达明王爱民常兴韩生韩治亚陈红艳刘平赵志成刘玥冉周嘉伟许广文陈海军韦焕明余焓卢德力蒋继波邱丰何忠义熊丽萍
Owner SHANGHAI INST OF TECH
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