Electrolyte for zinc ion hybrid supercapacitor, and zinc ion hybrid supercapacitor and preparation method thereof

A supercapacitor and electrolyte technology, which is applied in the manufacture of hybrid capacitor electrolytes, hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve problems such as electrolyte leakage, device aging, low operating voltage, etc., and achieve a lifespan that is not easy to leak , high working voltage and good rate performance

Inactive Publication Date: 2017-11-21
REAL POWER IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The zinc-ion hybrid supercapacitors proposed in the above two patents all use water-based electrolyte, so they have a low operating voltage. High current will cause device aging and gasification expansion, resulting in electrolyte leakage.

Method used

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  • Electrolyte for zinc ion hybrid supercapacitor, and zinc ion hybrid supercapacitor and preparation method thereof
  • Electrolyte for zinc ion hybrid supercapacitor, and zinc ion hybrid supercapacitor and preparation method thereof
  • Electrolyte for zinc ion hybrid supercapacitor, and zinc ion hybrid supercapacitor and preparation method thereof

Examples

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preparation example Construction

[0076] In a preferred embodiment, the preparation method comprises the following steps:

[0077] a) Prepare the negative electrode: use zinc, zinc alloy or zinc and non-metallic composite material of required size as the negative electrode after surface treatment;

[0078] b) preparing electrolyte: dissolving zinc salt in organic solvent and / or ionic liquid, and fully stirring to obtain electrolyte;

[0079] c) Preparing a diaphragm: using a porous polymer film, an inorganic porous film or an organic / inorganic composite film of a required size as a diaphragm;

[0080] d) Preparation of positive electrode: positive electrode active material, conductive agent and binder are made into positive electrode slurry or positive electrode sheet material; then the positive electrode slurry is coated on the surface of the positive electrode current collector or the positive electrode sheet material is pressed on the positive electrode current collector surface, dried to obtain a positive...

Embodiment 1

[0086] A zinc ion hybrid supercapacitor, including a negative electrode, a diaphragm, an electrolyte, a positive electrode and a casing;

[0087] The negative electrode includes a negative electrode active material and a negative electrode current collector, both of which are zinc foil; the separator is glass fiber; the electrolyte is zinc trifluoromethanesulfonate (Zn(CF 3 SO 3 ) 2) and 2-dimethoxyethane (DME) and 1,3-dioxolane (DOL) mixed solution; positive electrode includes positive electrode material and positive electrode current collector, and positive electrode material includes activated carbon (positive electrode active material), acetylene black (conductive agent) and polyvinylidene fluoride (binder), and the positive current collector is aluminum foil.

[0088] The above-mentioned zinc ion hybrid supercapacitor is mainly prepared by the following method:

[0089] Preparation of negative electrode: take zinc foil with a thickness of 0.2 mm, cut it into discs with...

Embodiment 2

[0095] A zinc ion hybrid supercapacitor, including a negative electrode, a diaphragm, an electrolyte, a positive electrode and a casing;

[0096] The negative electrode includes a negative electrode active material and a negative electrode current collector, both of which are zinc foil; the separator is glass fiber; the electrolyte is zinc trifluoromethanesulfonate (Zn(CF 3 SO 3 ) 2 ) and 2-dimethoxyethane (DME) and 1,3-dioxolane (DOL) mixed solution; positive electrode includes positive electrode material and positive electrode current collector, and positive electrode material includes activated carbon (positive electrode active material), acetylene black (conductive agent) and polyvinylidene fluoride (binder), and the positive current collector is aluminum foil.

[0097] The above-mentioned zinc ion hybrid supercapacitor is mainly prepared by the following method:

[0098] Preparation of negative electrode: take zinc foil with a thickness of 0.2 mm, cut it into discs wit...

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Abstract

The invention relates to the field of supercapacitors, specifically provides electrolyte for a zinc ion hybrid supercapacitor, and the zinc ion hybrid supercapacitor and a preparation method thereof. The electrolyte for the zinc ion hybrid supercapacitor comprises organic solvent and / or ionic liquid; the organic solvent and / or the ionic liquid are used, so that the capacitor can work at higher work voltage and within a larger temperature range, gasification expansion does not occur during a working process, an electrolyte leakage risk is reduced, and the electrolyte for the zinc ion hybrid supercapacitor is applicable to working with high current density. The zinc ion hybrid supercapacitor provided by the invention comprises the electrolyte for the zinc ion hybrid supercapacitor, and thus has the advantages of being high in working voltage, wide in working range, good in rate capacity, not prone to leak electrolyte and long in service life.

Description

technical field [0001] The invention relates to the field of supercapacitors, in particular to an electrolyte solution for a zinc ion hybrid supercapacitor, a zinc ion hybrid supercapacitor and a preparation method thereof. Background technique [0002] At present, more than 80% of the world's energy consumption comes from non-renewable energy sources such as coal, oil, and natural gas. The resulting energy shortage and environmental pollution problems promote the use of clean renewable energy sources such as solar energy and wind energy and the development of energy storage devices research and development. Among many energy storage devices, Li-ion batteries and supercapacitors have been the most widely studied and are widely used in portable electronic devices such as mobile phones, digital cameras, and notebook computers. Traditional lithium-ion batteries use graphite materials as negative electrodes, and transition metal oxides (LiMn 2 o 4 、LiCoO 2 、LiNiMnCoO 2 ) or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/60H01G11/30H01G11/32H01G11/06H01G11/84
CPCY02E60/13H01G11/60H01G11/06H01G11/30H01G11/32H01G11/84
Inventor 唐永炳王恒王蒙
Owner REAL POWER IND LTD
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