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Multilayer structure-based novel battery type supercapacitor with high power density and high energy density and preparation method

A supercapacitor, high power density technology, applied in the field of electrical components, can solve the problems of single use of energy storage/energy conversion equipment, low energy density, unsatisfactory power density, etc., to achieve excellent cycle stability, high specific capacitance, high The effect of academic and business value

Active Publication Date: 2016-01-27
QINGDAO NINEX NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, some metal hydroxides, metal sulfides and mixed metal oxides are also used as electrode materials for supercapacitors. Although these materials all exhibit high specific capacitance (ie, charge storage capacity) and high energy density, they are The power density is unsatisfactory, and the energy density is low at high charge and discharge rates
[0005] In view of the fact that the prior art does not disclose any kind of battery or capacitor with both high power density and high energy density, and has both battery and capacitor characteristics, a new concept of battery-type supercapacitor is developed to make it a high-capacity A comprehensive environmentally friendly energy storage device with high energy density and high power density, which fundamentally solves the shortcomings of traditional energy storage / energy conversion equipment with a single purpose, and innovates existing commercial energy equipment

Method used

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  • Multilayer structure-based novel battery type supercapacitor with high power density and high energy density and preparation method
  • Multilayer structure-based novel battery type supercapacitor with high power density and high energy density and preparation method
  • Multilayer structure-based novel battery type supercapacitor with high power density and high energy density and preparation method

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Embodiment 1

[0090] The present embodiment prepares the method for the new concept battery-type supercapacitor based on multilayer structure high power density and high energy density, comprises the following steps:

[0091] 1) Accurately weigh 0.485gBi(NO 3 ) 3 ·5H 2 O, 1.5g of thioacetamide and 1.563g of carbon nanotubes (CNT), dissolved in 15mL of deionized water, continued to stir for 5min;

[0092] 2) Transfer the suspension in 1) to a 20mL high-temperature reaction kettle, put it into a blast drying oven and react at 180°C for 6h;

[0093] 3) to treat the natural cooling of the reactor, the Bi in the reactor 2 S 3 / CNT(Bi 2 S 3 / CNT mass ratio is 1:2) washed with deionized water and absolute ethanol three times respectively, and then dried in a blast drying oven at 60°C;

[0094] 4) Dilute Bi with 5% Nafion ethanol solution 2 S 3 / CNT nanocomposite was prepared into a 0.1mg / mL solution, and sonicated for 5min;

[0095] 5) Drop 5 μL of Bi on the glassy carbon electrode with ...

Embodiment 2

[0104] The difference between this embodiment and Embodiment 1 is that the number of repetitions of steps 5) to 7) in step 8) of this embodiment is 0.

Embodiment 3

[0106] The difference between this embodiment and Embodiment 1 is that the number of times of repeating the three steps 5) to 7) in step 8) of this embodiment is 1.

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Abstract

A supercapacitor is energy storage equipment with high power density and low energy density, and generally can satisfy requirements of people for both high power density and high energy density only when used by being matched with a battery to be a system. The invention discloses a novel battery type supercapacitor, and through a method of using a high-specific-energy battery material or / and supercapacitor material such as a metal oxide, a metal hydroxide, a metal sulfide, a conducting polymer and a carbon material to form alternate thin layers with reduced oxidized graphene (rGO) and further manufacture a multilayer structure formed by a plurality of thin layers, a supercapacitor with high specific energy and high specific power is realized. The novel multilayer structure formed by many thin layers made of battery or capacitor material and rGO in an alternate mode can ensure that an electrode that is manufactured is greatly improved in reaction particle diffusion control and has improved dynamic characteristics, so that high power density and high energy density can be obtained when the electrode serves as a capacitor.

Description

technical field [0001] The invention belongs to the field of electrical components, and relates to a battery-type capacitor, in particular to a new-concept battery-type supercapacitor electrode having both high power density and high energy density. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, are energy storage devices with high energy density between traditional capacitors and batteries. Supercapacitors mainly rely on the electrochemical reaction on the electrode surface and / or the electric double layer to store charges. They have the advantages of rapid charge and discharge, long service life, good stability, wide operating temperature, simple circuit, safety and reliability, and environmental protection. At present, it has obtained a wide range of commercial applications, including consumer electronics, electric vehicles, flexible electronic displays, and aerospace. However, compared with batteries (such as lithium batteries, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/84H01G11/86
CPCY02E60/13H01G11/36H01G11/86C25D9/04
Inventor 李长明杨萍萍谢佳乐
Owner QINGDAO NINEX NEW ENERGY TECH CO LTD
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