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Aqueous capacitor battery and preparation method thereof

A capacitor battery and water system technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors to achieve good rate performance and cycle performance, novel design and strong practicability.

Inactive Publication Date: 2020-12-08
HKUST SHENZHEN RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, for water-based supercapacitors, it is a new technical challenge to increase the specific capacitance while also increasing the voltage window.

Method used

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  • Aqueous capacitor battery and preparation method thereof
  • Aqueous capacitor battery and preparation method thereof
  • Aqueous capacitor battery and preparation method thereof

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preparation example Construction

[0042] Correspondingly, as image 3 as shown, image 3 A schematic diagram of the manufacturing process of the electrode of the aqueous capacitor battery according to the preferred embodiment of the present invention is shown. The present invention also proposes a preparation method for the above-mentioned water system capacitor battery, comprising the following steps:

[0043] Step S1, configuring a quinone molecular solution, and configuring a hydroquinone molecular solution;

[0044] Step S2, providing a first carbon substrate, and immersing the first carbon substrate in a solution of quinone molecules, taking it out, and cleaning it with sulfuric acid to obtain a negative electrode;

[0045] providing a second carbon substrate, and immersing the second carbon substrate in a diphenol molecular solution, taking it out, and cleaning it with sulfuric acid to obtain a positive electrode;

[0046] The standard electrode potential of quinone molecules is higher than that of qu...

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Abstract

The invention provides an aqueous capacitor battery and a preparation method thereof. The aqueous capacitor battery comprises a positive electrode and a negative electrode, the positive electrode is made of a first carbon substrate adsorbed with benzenediol molecules; the negative electrode is made of a second carbon base material adsorbed with quinone molecules; and the standard electrode potential of the benzenediol molecules is higher than the standard electrode potential of the quinones molecules. The water system capacitor battery is novel in design and high in practicability.

Description

technical field [0001] The invention relates to the field of batteries, in particular to an aqueous capacitor battery and a preparation method thereof. Background technique [0002] Electrochemical energy storage devices can be found everywhere in our daily life. Especially in portable electronic devices, it has been widely used, such as mobile phones, laptop computers, digital cameras, and the like. In recent years, with the rapid development of hybrid electric vehicles, it has become a research hotspot for researchers to develop new materials and technologies to meet the needs of power sources for high energy density and high power density at the same time. [0003] Compared with other electrochemical energy storage technologies, although lithium batteries have higher energy density, the development of lithium batteries is limited due to high cost and the use of organic substances as electrolytes, poor safety, and easy explosion. Compared with lithium batteries, supercap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/84H01G11/86
CPCH01G11/30H01G11/32H01G11/84H01G11/86
Inventor 陈擎徐源
Owner HKUST SHENZHEN RES INST
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