Nano-sized nickel hydroxide/carbon composite material and its manufacture method and purpose

A carbon composite material, nickel hydroxide technology, applied in the direction of alkaline battery electrodes, etc., can solve the mismatch of the size ratio of nano nickel hydroxide particles and conductive agent particles, nano nickel hydroxide materials are prone to agglomeration, and the battery performance is not very good. Ideal and other problems, to achieve excellent high-current charge-discharge characteristics, good charge-discharge reversibility, and reduce operating costs.

Inactive Publication Date: 2010-04-14
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high resistance between nickel hydroxide nanocrystal grains with semiconducting properties, the agglomeration of nano nickel hydroxide materials is easy to occur, and the size ratio of nano nickel hydroxide particles and conductive agent particles does not match when assembling batteries, it is difficult to mix Factors such as uniformity lead to unsatisfactory performance of batteries assembled solely from nano-nickel hydroxide as an active material

Method used

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  • Nano-sized nickel hydroxide/carbon composite material and its manufacture method and purpose
  • Nano-sized nickel hydroxide/carbon composite material and its manufacture method and purpose
  • Nano-sized nickel hydroxide/carbon composite material and its manufacture method and purpose

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: Preparation of nano-nickel hydroxide / carbon composite material whose weight percent content of nano-nickel hydroxide is 50%.

[0028] The base carbon material can be acetylene black, carbon black, graphite or amorphous carbon with a particle size of 0.001-50 microns. In this embodiment, acetylene black is taken as an example.

[0029] 1) Prepare NiCl with a concentration of 0.01-5.0mol / L 2 The solution is ready for use, and can also be nickel sulfate, nickel acetate or nickel nitrate solution of the same concentration;

[0030] 2) Prepare a KOH solution with a concentration of 0.1-5.0mol / L, or sodium hydroxide or LiOH solution with the same concentration;

[0031] 3) Preparation of nano-nickel hydroxide / carbon composite material: add acetylene black to the above-mentioned NiCl in proportion 2 In the aqueous solution, add ethanol or methanol, propanol, butanol, isopropanol, acetone, butanone with a volume of 0.5% to 5% of the volume of the above solution ...

Embodiment 2

[0032] Example 2: Preparation of nano-nickel hydroxide / carbon composite material with a weight percent content of nano-nickel hydroxide of 33.3%.

[0033]Taking acetylene black as the nano-nickel hydroxide weight percentage content of the base as the preparation step of the nano-nickel hydroxide / carbon composite material of 33.3% and the nano-nickel hydroxide / carbon composite material whose weight percentage content of the nano-nickel hydroxide is 50% The preparation steps are exactly the same, only the proportion of reactants required in the preparation process is different. The weight of the acetylene black added in the preparation process is twice the weight of the nano-nickel hydroxide generated in the preparation process. The cyclic curve of the prepared nano-nickel hydroxide / carbon composite ( Figure 5 ) shows that the oxidation peak potential of nickel is 0.460V, the reduction peak potential is 0.336V, and the peak potential difference is 0.124V, indicating that this ...

Embodiment 3

[0034] Example 3: Preparation of nano-nickel hydroxide / carbon composite material with a weight percent content of nano-nickel hydroxide of 66.7%.

[0035] Taking acetylene black as the nano-nickel hydroxide weight percentage content of the base as the preparation step of the nano-nickel hydroxide / carbon composite material of 66.7% and the nano-nickel hydroxide / carbon composite material whose weight percentage content of the nano-nickel hydroxide is 50% The preparation steps are exactly the same, only the proportion of reactants required in the preparation process is different. The weight of the acetylene black added in the preparation process is half of the weight of the nano-nickel hydroxide generated in the preparation process. The cyclic desk curve ( Figure 6 ) shows that the oxidation peak potential of nickel is 0.457V, the reduction peak potential is 0.334V, and the peak potential difference is 0.123V, indicating that this material also exhibits good conductivity and re...

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Abstract

The disclosed preparation method for nano Ni(OH)3 / C composite material comprises: on condition of ultrasonic vibrating, fast reacting the soluble nickel salt and strong base to generate the nano-sizeNi(OH)3 and attach on carbon material uniformly. The product has super conductivity and charge / discharge performance. This invention is simple, high efficient, and low cost.

Description

technical field [0001] The invention relates to a nano-nickel hydroxide / carbon composite material, a preparation method and application thereof, and belongs to the technical field of nano-composite materials. Background technique [0002] The increasingly urgent global energy resource problem has prompted the research of electric vehicles to enter an unprecedented upsurge. In the process of research and development of electric vehicles, batteries have attracted much attention as a key factor restricting the development of electric vehicles. Metal hydride nickel (MH / Ni) battery is known as the preferred power battery for electric vehicles due to its excellent comprehensive characteristics such as high specific energy, long life, suitable for high current charging and discharging, and no pollution. However, when this system is used in hybrid electric vehicles, its high-current charging and discharging performance needs to be further improved. [0003] In order to further imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/24H01M4/26
CPCY02E60/124Y02E60/10
Inventor 陈卫华杨毅夫邵惠霞
Owner WUHAN UNIV
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