Zinc ion hybrid supercapacitor and preparation method thereof

A technology of supercapacitors and zinc ions, applied in hybrid capacitors, hybrid/electric double-layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve problems such as easy short-circuiting of batteries, achieve good stability and eco-friendliness, simple preparation process, The effect of reducing security risks

Inactive Publication Date: 2020-05-12
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the technology disclosed in this document has the following defects or deficiencies: the prepared zinc-ion hybrid supercapacitor will form zinc dendrites and by-products, and the uncontrollable growth of zinc dendrites during the electroplating / stripping process will lead to easy short circuits inside the battery, which has a large Security Risk

Method used

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  • Zinc ion hybrid supercapacitor and preparation method thereof
  • Zinc ion hybrid supercapacitor and preparation method thereof
  • Zinc ion hybrid supercapacitor and preparation method thereof

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Experimental program
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Embodiment 1

[0034] The preparation method of zinc ion hybrid supercapacitor of the present invention comprises the following steps:

[0035] (1) Layered TiS 2 preparation.

[0036] 0.4g TiS 2 The powder raw material was placed in a mortar, 0.4 mL of NMP was added and manually ground; then collected and dispersed in 40 mL of isopropanol (IPA), and ultrasonically treated with ice water; finally washed with isopropanol and deionized water, dried layered TiS 2 Nanosheets;

[0037] (2)TiS 2 Preparation of anode and AC cathode.

[0038] The resulting layered TiS 2 Nanosheets, acetylene black, and polyvinylidene fluoride are mixed with NMP at a mass ratio of 5:2:2 and ultrasonically treated to prepare a uniformly dispersed slurry; then the slurry is coated on the current collector titanium sheet, and then placed in a 60°C oven Dry for 300min to obtain TiS 2 negative electrode. Replace TiS with AC 2 , the AC cathode can be prepared using a similar method.

[0039] (3) ZnSO 4 Preparati...

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Abstract

The invention discloses a novel zinc ion hybrid supercapacitor based on a TiS2 embedded negative electrode and a preparation method thereof. The zinc ion hybrid supercapacitor comprises an embedded battery type negative electrode, an adsorptive capacitive type positive electrode, a diaphragm and an electrolyte. The negative electrode active material is titanium disulfide (TiS2), the positive electrode active material is activated carbon (AC), and the electrolyte is a zinc sulfate (ZnSO4) aqueous solution. According to the novel zinc ion hybrid supercapacitor, the problem that zinc dendrites are generated when a zinc foil serves as a negative electrode of a traditional zinc ion hybrid supercapacitor is effectively solved, and the novel zinc ion hybrid supercapacitor has the advantages of being high in energy density, high in specific capacitance, good in safety, environmentally friendly, simple in preparation process and low in cost.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage devices, in particular to a TiS-based 2 Novel zinc-ion hybrid supercapacitor with embedded negative electrode and its preparation method. Background technique [0002] With the gradual depletion of global resources and the deterioration of the environment, it is urgent to develop new green and pollution-free energy sources and advanced energy storage devices. Today's major electrochemical energy storage systems, including lithium-ion batteries and supercapacitors, have their own advantages. For example, lithium-ion batteries have high energy density while supercapacitors have good power density and cycle performance. Therefore, it is promising to construct a hybrid supercapacitor that combines the advantages of batteries and supercapacitors. [0003] In recent years, Li-ion and Na-ion hybrid supercapacitors have attracted numerous research interests in academia. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/06H01G11/24H01G11/26H01G11/30H01G11/58H01G11/84
CPCH01G11/06H01G11/24H01G11/26H01G11/30H01G11/58H01G11/84Y02E60/13
Inventor 王思亮汪敏王强倪潼曾玮郭小辉
Owner ANHUI UNIVERSITY
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