Aqueous rechargeable magnesium/zinc ion capacitor battery

A capacitive battery and zinc ion technology, applied in the field of electrochemistry, can solve problems such as mismatch between energy peak output and energy needs, low energy storage density of supercapacitors, and potential safety hazards, etc., to achieve long cycle life, high energy density, The effect of improving safety performance
CN103401030AActive Publication Date: 2013-11-20HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN ENG UNIV
Publication Date
2013-11-20

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Abstract

The invention provides an aqueous rechargeable magnesium / zinc ion capacitor battery. A positive plate comprises a positive current collector and a coating layer, wherein the coating layer is coated on the positive current collector and contains a positive active substance which is lambda-MnO2 in a three-dimensional tunnel spinel structure. A negative plate comprises a negative current collector and a coating layer, wherein the coating layer is coated on the negative current collector and contains a negative active substance which is a carbon-based material of an ion-adsorption / desorption super-capacitor in a porous structure. An electrolyte solution is a water solution containing magnesium ions or zinc ions. The concentration of the magnesium ions or the zinc ions in the electrolyte solution is 0.5mol / L to 10mol / L. By virtue of the aqueous electrolyte solution, the cost is reduced, the safety performance is improved, and environmental pollution is avoided; the aqueous rechargeable magnesium / zinc ion capacitor battery is long in cycle life, large in energy density and applicable to large-current charge and discharge, and is power storage equipment with wide application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a magnesium / zinc ion capacitor battery. Background technique

[0002] At present, renewable and clean energy such as solar energy and wind energy have become research hotspots in various countries, but the peak output of these energy sources often cannot match the energy demand, so an efficient, stable and reliable energy conversion and storage device has become our Top concern. People have developed various forms of energy storage devices, among which lithium-ion batteries have rapidly occupied the market of energy storage devices due to their advantages of high specific energy since their commercialization, and are widely used in cameras, mobile phones, notebook computers and other devices. It has been widely used, but the flammable organic electrolyte used has potential safety hazards during overcharge and overdischarge, which inhibits the application of ...

Claims

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