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Full-sealing nickel-carbon supercapacitor manufacturing method

A supercapacitor, fully sealed technology, applied in the manufacture of hybrid/electric double layer capacitors, etc., can solve the problems of unusable, affecting the performance of supercapacitors, reducing the electrolyte of capacitors, etc., and achieve the effect of wide application range

Inactive Publication Date: 2015-07-01
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This application method has two disadvantages: ① It cannot be used in special environments, such as vacuum or high pressure environments or places where other people cannot enter
②The long-term generation of hydrogen and oxygen will reduce the electrolyte in the capacitor until it affects the performance of the supercapacitor

Method used

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  • Full-sealing nickel-carbon supercapacitor manufacturing method

Examples

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Comparison scheme
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preparation example Construction

[0025] The preparation method of the fully sealed nickel-carbon supercapacitor includes the production process of the known technology fully sealed nickel-carbon supercapacitor, and is characterized in that it also includes the following production process:

[0026] ⑴ Making hydrogen absorbing electrode

[0027] ① Stir chloroplatinic acid, formaldehyde solution and deionized water to form a mixed solution with a mass content of 10-20% chloroplatinic acid, 15-30% formaldehyde solution and 50-75% deionized water, and drop sodium hydroxide solution Put it into the mixed solution and stir, stand still to remove the precipitate, then separate the precipitate, wash the precipitate until it is free of chloride ions, dry it, grind it, and sieve it to form a platinum black powder;

[0028] ② Stir the platinum black powder in the process ⑴① with the binder and deionized water to form a platinum black mixture with a mass content of 50-80% platinum black powder, 5-15% binder and 15-35% de...

Embodiment 1

[0041] According to the known technology, the parts for making the fully sealed nickel-carbon supercapacitor are prepared; and the following manufacturing process is included:

[0042] ⑴ Making hydrogen absorbing electrode

[0043] ① Weigh 100g of chloroplatinic acid, put 200g of formaldehyde solution into a beaker, add 500g of deionized water, mix and stir for 30 minutes to form a mixed solution; put 40% sodium hydroxide solution in a separating funnel, and then drop into into the mixed solution, stirring at the same time; observe the mixed solution until no precipitation, stop dripping such as sodium hydroxide; filter after standing for 24 hours, and wash the precipitate with deionized water until there is no chloride ion; the obtained precipitate, the precipitate The material was placed in a drying oven, dried at 80°C for 1 hour, ground, and passed through a 200-mesh sieve to obtain platinum black powder;

[0044]②Mix 20g of platinum black powder, 4g of 60% PTFE emulsion a...

Embodiment 2

[0051] Change "100g chloroplatinic acid, 200g formaldehyde solution and 500g deionized water" into "100g chloroplatinic acid, 250g formaldehyde solution and 600g deionized water" in the process of making the hydrogen-absorbing electrode in Example 1; "90g silver nitrate, 60g mercuric nitrate and 500g deionized water" was changed to "75g silver nitrate, 75g mercuric nitrate and 500g deionized water"; figure 1 The fabrication process of the hermetically sealed nickel-carbon supercapacitor is shown.

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Abstract

The invention relates to a full-sealing nickel-carbon supercapacitor manufacturing method. A full-sealing nickel-carbon supercapacitor manufacturing process in the prior art is included. The method is characterized by further comprising the following manufacturing steps: (1) a hydrogen absorbing electrode is manufactured; (2) an oxygen absorbing electrode is manufactured; (3) the hydrogen absorbing electrode and the oxygen absorbing electrode are perpendicular to a nickel positive electrode plate and a carbon negative electrode plate, the hydrogen absorbing electrode is close to a positive electrode post, the oxygen absorbing electrode is close to a negative electrode post, and an electrode group is formed; and (4) the electrode group is assembled to a shell, a shell cover with an air hole is welded on the shell, an electrolyte is poured via the air hole, and the air hole is sealed. By adopting the hydrogen absorbing electrode in parallel connection with the nickel positive electrode plate and the oxygen absorbing electrode in parallel connection with the carbon negative electrode plate, an electrochemical method is used for timely eliminating hydrogen and oxygen possibly generated in the full-sealing nickel-carbon supercapacitor, dangers caused by accumulation of hydrogen and oxygen are eliminated, artificial maintenance is not needed, operation is safe and reliable, the application range is wide, and advantages of the method are more obvious in special and harsh environments such as aerospace and deepwater operation.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, in particular to a preparation method of a fully sealed nickel-carbon supercapacitor. Background technique [0002] Currently known nickel-carbon supercapacitors are not truly hermetically sealed, and are generally provided with air holes or air outlet valves on the casing. Nickel-carbon supercapacitors will produce a small amount of hydrogen and oxygen when they are charged and discharged with a large current or when they are accidentally overcharged or overdischarged. The air outlet valve is automatically deflated. This application method has two disadvantages: ① It cannot be used in special environments, such as vacuum or high pressure environments or places where other people cannot enter. ②The long-term generation of hydrogen and oxygen will reduce the electrolyte in the capacitor until it affects the performance of the supercapacitor. Contents of the invention [0003] In order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/86
CPCY02E60/13H01G11/84H01G11/86
Inventor 郑智勇
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST