Aluminum-doped manganese dioxide-based flexible supercapacitor electrode material and preparation and application thereof

A supercapacitor, manganese dioxide-based technology, used in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, etc., can solve the problems affecting device capacity, poor conductivity, etc., and achieve easy availability of raw materials, low cost, and environmental friendly. Effect

Inactive Publication Date: 2021-03-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But pure MnO 2 As an electrode material, the conductivity is very poor, which seriously affects the capacity of the device

Method used

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  • Aluminum-doped manganese dioxide-based flexible supercapacitor electrode material and preparation and application thereof
  • Aluminum-doped manganese dioxide-based flexible supercapacitor electrode material and preparation and application thereof
  • Aluminum-doped manganese dioxide-based flexible supercapacitor electrode material and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A preparation method of aluminum-doped manganese dioxide-based flexible supercapacitor electrode material, which integrates Al-MnO on activated carbon cloth substrate through hydrothermal reaction 2 nanosheets, resulting in Al-MnO 2 @CC material is the electrode material of aluminum-doped manganese dioxide-based flexible supercapacitor.

[0062] More specifically, the following steps are included:

[0063] (1) For a typical carbon cloth substrate (size 1cm×0.5cm×0.033cm), first use 100ml of acetone, isopropanol, and ethanol to sonicate for 30 minutes, and then use concentrated HNO 3 Acidify for 15 minutes, wash with deionized water, and dry overnight in a vacuum oven at 60°C to obtain an activated carbon cloth substrate. Put the activated carbon cloth substrate in 100mL deionized water, and add 0.8g KMnO 4 , 0.45mM AlCl 3 ,

[0064] (2) Add a magnetic stirrer and stir for 30min, and KMnO 4 , AlCl 3 , carbon cloth substrate, and deionized water are evenly mixed to ...

Embodiment 2

[0070] Compared with Example 1, AlCl in step (1) 3 The content was changed from 0.45mM to 0.22mM, and other conditions remained unchanged.

Embodiment 3

[0072] Compared with Example 1, AlCl in step (1) 3 The content was changed from 0.45mM to 0.90mM, and other conditions remained unchanged.

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Abstract

The invention relates to an aluminum-doped manganese dioxide-based flexible supercapacitor electrode material and preparation and application thereof, and the method comprises the steps: carrying outthe integrated generation of AlMnO2 nanosheets on an activated carbon cloth substrate through a hydrothermal reaction, and obtaining an AlMnO2@CC material, i.e., the aluminum-doped manganese dioxide-based flexible supercapacitor electrode material. Compared with the prior art, the preparation process is simple, the raw materials are simple and easy to obtain, and the prepared material is high in specific capacitance, good in cycling stability and suitable for various wearable portable products.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to an electrode material, preparation and application of an aluminum-doped manganese dioxide-based flexible supercapacitor electrode. Background technique [0002] Energy consumption is becoming more and more serious, and the whole society urgently needs to develop energy storage devices. As an energy storage device, supercapacitor (SC) has attracted extensive attention in the fields of electronics, transportation, and aerospace due to its high energy density and good cycle stability. With the development of lightweight, portable, flexible, wearable electronic products and electric vehicles or hybrid vehicles, foldable energy storage devices occupy a more important position, achieving structural flexibility while maintaining high power density and further improving super The energy density of a capacitor requires a certain degree of flexibility in the electrode material. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/32H01G11/46
CPCH01G11/24H01G11/30H01G11/32H01G11/46H01G11/86Y02E60/13
Inventor 杨正龙徐梦瑶
Owner TONGJI UNIV
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