Superbattery polar plate containing vacuum puffed grapheme, preparation method thereof and lead acid superbattery assembled thereby

A vacuum puffing and super battery technology, which is applied to battery electrodes, lead-acid battery electrodes, lead-acid batteries, etc., can solve the problems of small specific capacitance and poor rate performance, and achieve the effects of improved rate performance, developed pores, and sufficient separation

Inactive Publication Date: 2012-10-31
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems of small specific capacitance and poor rate performance of the capacitive electrode materials used in existing super batteries, and provides super battery pole plates containing vacuum expanded graphene, its preparation method and its assembled Lead acid super battery

Method used

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  • Superbattery polar plate containing vacuum puffed grapheme, preparation method thereof and lead acid superbattery assembled thereby
  • Superbattery polar plate containing vacuum puffed grapheme, preparation method thereof and lead acid superbattery assembled thereby
  • Superbattery polar plate containing vacuum puffed grapheme, preparation method thereof and lead acid superbattery assembled thereby

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specific Embodiment approach 1

[0048] Embodiment 1: The super battery pole plate comprising vacuum expanded graphene of this embodiment is composed of a current collector and an electrode material coated on the current collector, and the electrode material includes a capacitive electrode active material and a battery electrode active material The capacitive electrode active material includes vacuum expanded graphene, and the mass of the vacuum expanded graphene accounts for 0.01% to 20% of the mass of the battery electrode active material.

[0049] In the super battery pole plate comprising vacuum expanded graphene of the present embodiment, the vacuum expanded graphene in the electrode paste is used as a capacitive electrode active material, and a capacitive current is provided through the charge and discharge process of the electric double layer on the rich surface of the vacuum expanded graphene; In the electrode paste, there is also an electrode active material of the battery that stores electrical energ...

specific Embodiment approach 2

[0050] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the preparation method of vacuum expanded graphene is carried out according to the following steps:

[0051] 1. Oxidize graphite into graphite oxide;

[0052] 2. Put the graphite oxide obtained in step 1 into a vacuum heating furnace, first evacuate to -0.07MPa~-0.1MPa, then raise the temperature to 100℃~800℃ at a rate of 5℃ / min~100℃ / min and keep 1min to 3h to obtain vacuum-expanded graphene. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0053] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the preparation method of vacuum expanded graphene is carried out according to the following steps:

[0054] 1. Oxidize graphite into graphite oxide;

[0055] 2. Put the graphite oxide obtained in step 1 into a vacuum heating furnace, first evacuate to -0.07MPa~-0.1MPa, then raise the temperature to 100℃~800℃ at a rate of 5℃ / min~100℃ / min and keep 1min~3h;

[0056] 3. Put the graphite oxide treated in step 2 in an atmosphere-protected heating furnace, and in an inert gas atmosphere, raise the temperature to 200-900°C at a rate of 1°C / min-100°C / min and keep it for 10min-3h. Vacuum expanded graphene is obtained. Others are the same as in the first embodiment.

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Abstract

The invention relates to an electrode polar plate, a preparation method thereof and a superbattery, in particular to a superbattery polar plate containing vacuum puffed grapheme, a preparation method thereof and a lead acid superbattery assembled thereby, and aims to solve the technical problems that a capacitive electrode material used in a conventional superbattery has small specific capacity and poor rate capacity. The superbattery polar plate containing vacuum puffed grapheme consists of a current collector and an electrode material coated on the current collector, wherein the electrode material contains a capacitive electrode active substance and a battery electrode active substance; the capacitive electrode active substance comprises vacuum puffed graphene; and the mass of the vacuum puffed graphene is 0.01-20 percent of that of the battery electrode active substance. The preparation method comprises the following steps: the electrode material including the vacuum puffed graphene is mixed into an electrode paste to be coated on the current collector, the superbattery polar plate is obtained after the electrode paste is dried, the polar plate serves as the positive and/or negative pole of the superbattery to be assembled into a superbattery, and the battery polar plate can be used for hybrid electric vehicle batteries and energy storage batteries.

Description

technical field [0001] The invention relates to an electrode plate, a preparation method thereof and a lead-acid super battery assembled therefrom, belonging to the field of new energy. Background technique [0002] One of the major issues facing the world today is the issue of energy and the environment. In order to save limited fossil energy and reduce pollution caused by fossil fuels, countries all over the world are vigorously developing new energy vehicles, and my country also regards electric vehicles as a key strategic emerging industry. At present, the bottleneck restricting the development of electric vehicles is the power battery. The primary issue is the safety, price, life, specific energy, specific power and fast charging performance of the battery. At the same time, renewable clean energy such as wind energy and solar energy has also been vigorously developed. However, due to the instability of the generation of such energy, energy storage batteries are require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/62H01M4/16H01M10/06
CPCY02T10/7016Y02E60/126Y02E60/10
Inventor 贾铮戴长松朱加雄刘道庆侯超
Owner HARBIN INST OF TECH
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