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High specific energy super copacitor for vehicle

A supercapacitor, high-ratio technology, applied in the field of capacitors, can solve problems such as reducing battery life and battery damage, and achieve the effects of improving energy density, increasing specific energy, and improving electrochemical stability.

Inactive Publication Date: 2003-05-28
JINRONG SUPER CAPACITOR JINZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of whether it is a pure electric vehicle or a hybrid electric vehicle, when the vehicle starts, accelerates, climbs, etc., when high power output is required, the existing various traditional batteries cannot meet the requirements, and the high power output will seriously damage the traditional battery, significantly reducing battery life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The negative electrode is made of activated carbon, lithium cobalt oxide (LiCoO 2 ) made of positive electrode, LiPF 6 / EC+DMC is used as the electrolyte, and the electrode formula is shown in Table 1. As a comparison, the relevant data of capacitors with symmetrical electrode structures using activated carbon as positive and negative electrodes are also given.

[0027] The capacity of activated carbon is generally 30-35mAh / g, LiCoO 2 The lowest capacity can reach 140mAh / g, LiCoO 2 The specific capacity of the activated carbon is about 4 to 5 times higher than the specific capacity of the activated carbon, so a capacitor unit with a higher capacity can be obtained under the same geometric size, and the weight of the capacitor is much lower than that of the activated carbon / activated carbon structure. , so this capacitor unit has a higher specific capacity and higher specific energy.

[0028] The performance indicators of the capacitor unit are shown in Table 2.

Embodiment 2

[0030] The negative electrode is made of activated carbon, lithium nickelate (LiNiO 2 ) to make positive electrode, tetrabutylammonium fluoroborate (Eu 4 NBF 4 ) / PC+EC as electrolyte. The electrode formulation is shown in Table 1.

[0031] With embodiment 1, the capacity of gac is 30-35mAh / g, LiNiO 2 The capacity can reach 140~170mAh / g, LiNiO 2 The specific capacity of activated carbon is 4-6 times higher than that of activated carbon, so the capacitor unit has higher specific capacity and specific energy under the same conditions. The performance indicators of the capacitor unit are shown in Table 2.

Embodiment 3

[0033] The difference between this example and the capacitors described in Example 1 and Example 2 is that the electrode made of activated carbon is used as the positive electrode, and the negative electrode is made of a self-made nano-scale intercalation compound such as tungsten oxide. The electrolyte is the same as in Example 1 or Example 2.

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Abstract

A super capacitor with high specific energy for car is composed of the first electrode made of the material able to store energy based on Faraday procedure or pseudo-capacitance principle, the secondelectrode made of the material able to store energy based on dual electric layers or pseudo-capacitance principle, electrolyte (organic solution), fluid collector, diaphragm and casing.

Description

technical field [0001] The invention belongs to a capacitor, in particular to a supercapacitor for vehicles with high specific energy, long life and fast charging and discharging performance. technical background [0002] In recent years, the development of the electric vehicle industry in the world has shown two forms: pure electric vehicles and hybrid electric vehicles, and the development of battery technology has always been the main factor restricting the development of the entire electric vehicle industry so far. Regardless of whether it is a pure electric vehicle or a hybrid electric vehicle, when the vehicle starts, accelerates, climbs, etc., when high power output is required, the existing various traditional batteries cannot meet the requirements, and the high power output will seriously damage the traditional battery, significantly reducing battery life. In order to solve the above problems, supercapacitors have emerged in recent years. The energy storage of exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/04H01G11/22H01G11/30H01G11/60H01G11/62
CPCY02E60/13
Inventor 付旭涛才奇李建玲李文生蔡丹
Owner JINRONG SUPER CAPACITOR JINZHOU
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