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Method for producing mixed type super capacitor

A technology for supercapacitors and manufacturing methods, which is applied in the direction of capacitor manufacturing, capacitors, electrolytic capacitors, etc., and can solve the problems of cumbersome manufacturing process, high cost, and no performance parameters, etc., and achieve the effect of simple process and low cost

Inactive Publication Date: 2008-05-21
SHANGHAI AOWEI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MnO prepared by the former 2 The specific capacitance is larger, but the disadvantage is that MnO 2 Laboratory synthesis is required, and the cost is high; the latter is to prepare supercapacitors by chemical synthesis, but this method does not give relevant performance parameters, and at the same time, ruthenium is expensive and it seems difficult to become the first choice for hybrid supercapacitors
Although this method can significantly increase the output power of the capacitor, the manufacturing process is cumbersome, and the cost is also an obstacle that limits its further commercial application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 Accurately weigh a certain amount of activated nickel hydroxide, mix it with a conductive agent - superfine nickel powder, first carry out mechanical mixing, and after being uniform, use water and absolute ethanol with a volume ratio of 1:1 to adjust To form a suspension, add an appropriate amount of 60wt% polytetrafluoroethylene dropwise into the above system under ultrasonic vibration conditions. When the suspension becomes a slurry with a certain viscosity, dry it in a drying oven at about 80-120°C for 2-6 hours. The above-mentioned baked material is pressed into a 0.2mm electrode positive electrode on a film rolling machine, and finally this electrode piece is double-sidedly pasted on a commercially available nickel foam current collector to form the positive electrode of a hybrid supercapacitor.

[0020] Or accurately weigh a certain amount of nickel hydroxide that has been activated, and mix it with a conductive agent—ultrafine nickel powder, firstly ...

Embodiment 2

[0023] Other conditions are the same as those in Embodiment 1, except that the ultracapacitor unit adopts a laminated process. The energy density of the prepared supercapacitor unit is 98% of that of Example 1.

Embodiment 3

[0025] The production method of the positive and negative electrodes is the same as 1, the difference is that: (1) the conductive agent used in the negative electrode is 320 mesh graphite powder; (2) the binder is polyvinylidene fluoride; (3) the nickel foam current collector is double-sided pressed There are pole pieces attached. Compared with Example 1, the energy storage capacity of the single capacitor unit has increased by 8%.

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PUM

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Abstract

The invention includes method for producing positive pole and negative pole of super capacitor. Characters are as follows: furnishing materials of positive pole and negative pole of super capacitor as paste by using water / absolute ethyl alcohol; obtaining positive pole and negative pole of super capacitor by pressing dried materiel on forming roller; pasting these pole pieces onto single or two faces of collective body made from foam nickel so as to produce positive pole and negative pole of super capacitor. Superposing positive poles, negative poles and diaphragms crosswise produces capacitor unit. With electrolyte being filled into capacitor unit, sealing the unit obtains single mixed type super capacitor. Combining single capacitor in series or parallel obtains finished product of mixed type super capacitor. The invention features of simple preparing flow, easy of operation, good performances, good evenness, and easy to implement mass production.

Description

technical field [0001] The present invention relates to a method for manufacturing a hybrid supercapacitor with electric double layer capacitance, more specifically to a hybrid supercapacitor (also known as an "asymmetric supercapacitor") in which a porous carbon material is used as a negative electrode and a commercially available common nickel hydroxide material is used as a positive electrode. ), energy technology and related fields. Background technique [0002] Supercapacitor (Supercapacitor or Ultracapacitor) is a new type of energy storage device developed rapidly in the 1960s and 1970s. It stores and releases energy according to electrochemical principles, so it is usually called "Electrochemical Capacitor, EC)". It was originally a special device developed to make up for the lack of high-energy pulse power of batteries, such as providing high-power excitation for lasers, so it has the name "power storage". Since this device was later proved to be comparable to sto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/00H01G9/04H01G9/048H01G9/035H01G13/00
CPCY02E60/13
Inventor 华黎王然
Owner SHANGHAI AOWEI TECH DEV