Method for preparing sandwich-structure energy storage device by using heat-resistant film through one-step method

A sandwich and energy storage technology, applied in electrical components, electrochemical generators, final product manufacturing, etc., can solve problems such as energy storage devices that have not yet been seen, and achieve the effect of easy large-scale production and low energy consumption

Inactive Publication Date: 2020-05-01
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The most important factor affecting the performance of energy storage devices is the electrode material. At present, transition metal oxides (or sulfides) are the most commonly used energy storage materials; although some active materials have been reported directly on the surface of the substrate to obtain no bonding. However, it is only used for the preparation of a single electrode. After the electrode is prepared, it still involves the assembly process and technology of the device, and there is no report on the direct production of energy storage devices.

Method used

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  • Method for preparing sandwich-structure energy storage device by using heat-resistant film through one-step method

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Prepare an aqueous solution with a graphene oxide concentration of 0.20 mg / mL and stir it magnetically for 30 min to form a uniformly dispersed solution. The graphene oxide is prepared according to the Hummer method; the cobalt foam and iron foam are cut into small pieces of 1 cm × 2 cm, and the polytetrafluoroethylene The vinyl diaphragm is cut into small pieces slightly larger than 1cm×2cm, and ultrasonically cleaned with ethanol and deionized water respectively to remove impurities adhering to the surface, and the cleaned metal sheet and diaphragm are arranged in the order of "foam cobalt||diaphragm||foam iron" After the lamination is fixed, it is immersed in the prepared graphene oxide solution, and transferred to a hydrothermal kettle for 24 hours at 180°C to react for 24 hours; after the reaction, the device is cleaned in absolute ethanol and deionized water, and dried to obtain Cobalt hydroxide / carbon||separator||iron oxide / carbon energy storage device.

Embodiment 2

[0015] Prepare an aqueous glucose solution with a concentration of 80 mg / mL and stir it magnetically for 30 min to form a uniformly dispersed solution; cut the nickel foam and molybdenum foam into small pieces of 1 cm × 2 cm, and cut the polytetrafluoroethylene diaphragm into a size slightly larger than 1 cm × 2 cm. The small pieces are ultrasonically cleaned with ethanol and deionized water to remove the impurities adhered to the surface, and the cleaned metal sheets and diaphragms are stacked and fixed in the order of "foam nickel||diaphragm||foam molybdenum" and then immersed in the prepared Glucose solution, and transferred to a hydrothermal kettle to react at 220°C for 6 hours; after the reaction, the device was cleaned in absolute ethanol and deionized water, and dried to obtain nickel hydroxide / carbon||diaphragm||molybdenum Oxide / carbon energy storage devices.

Embodiment 3

[0017] Prepare an aqueous solution with a concentration of 0.40 mg / mL oxidized carbon nanotubes and stir it magnetically for 30 min to form a uniformly dispersed solution. Manganese sheet and titanium sheet were cut into small pieces of 1cm×2cm, and the polytetrafluoroethylene diaphragm was cut into small pieces slightly larger than 1cm×2cm, using ethanol and deionized water Ultrasonic cleaning was carried out to remove the impurities adhered to the surface. After the cleaned metal sheet and diaphragm were stacked and fixed in the order of "manganese sheet||diaphragm||titanium sheet", they were immersed in the prepared carbon dioxide nanotube solution, and Transfer to a hydrothermal kettle and react at 120°C for 48 hours; wash the device after the reaction in absolute ethanol and deionized water, and dry to obtain manganese oxide / carbon||diaphragm||titanium oxide / carbon energy storage device.

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Abstract

The invention discloses a method for preparing a sandwich-structure energy storage device by a one-step hydrothermal method based on a high-temperature-resistant diaphragm material. The method is characterized in that different transition metals (such as iron, cobalt, nickel, copper and the like) are respectively utilized as a positive electrode substrate and a negative electrode substrate, the positive electrode substrate / diaphragm / negative electrode substrate are laminated and fixed in sequence, then immersed into aqueous solution containing a carbon source and treated by a pressurized hydrothermal method to directly obtain an energy storage device with a positive electrode / diaphragm / negative electrode sandwich structure, and the energy storage device can be used in energy storage devices such as supercapacitors, batteries and the like. The method advantaged in that the method is simple to operate, the device structure can be directly prepared, the device structure can be directly used only by subsequent liquid injection and activation operations, the assembly process from an electrode plate to an energy storage device is omitted, in addition, a binder and a conductive agent arenot needed, and a large precious instrument is further not needed.

Description

technical field [0001] The invention relates to a one-step method for preparing a sandwich structure energy storage device, in particular to utilizing a heat-resistant polymer film material. Background technique [0002] With the continuous development of the global economy and the continuous consumption of fossil energy, energy and environmental problems are becoming more and more serious, which has attracted people's attention, and finding new and efficient new energy sources and supporting energy storage devices is an effective way to solve this problem ; Supercapacitors and batteries are currently the main energy storage devices, which have the characteristics of high power density and high energy density, respectively. [0003] The most important factor affecting the performance of energy storage devices is the electrode material. At present, transition metal oxides (or sulfides) are the most commonly used energy storage materials; although some active materials have be...

Claims

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Application Information

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IPC IPC(8): H01G11/84H01M10/38
CPCH01G11/84H01M10/38Y02E60/10Y02E60/13Y02P70/50
Inventor 丁彦桢江汉文陆诚之王一斐张婷婷
Owner EAST CHINA UNIV OF SCI & TECH
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