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Preparation method and application of electrode material capable of regulating and controlling MnO2 by means of nickel doping induced lattice distortion

A lattice distortion and electrode material technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., to achieve the effects of improving storage capacity, excellent rate performance, and wide transmission channels

Pending Publication Date: 2021-11-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is rare to achieve simultaneous MnO 2 Fast electrons and improved solid-state ion transfer kinetics
So far, there is no systematic research report on the strategy of atomic doping to regulate lattice distortion in energy storage, especially in MnO 2 base supercapacitor

Method used

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  • Preparation method and application of electrode material capable of regulating and controlling MnO2 by means of nickel doping induced lattice distortion
  • Preparation method and application of electrode material capable of regulating and controlling MnO2 by means of nickel doping induced lattice distortion
  • Preparation method and application of electrode material capable of regulating and controlling MnO2 by means of nickel doping induced lattice distortion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] At room temperature, 0.357g Mn(NO 3 ) 2 and 0.0305g Ni(NO 3 ) 2 Dissolve in ultrapure water to form a 40ml solution, adjust the pH to 9 with NaOH with a concentration of 1mol / L under the condition of sufficient stirring, and then add 1mL of 30% H 2 o 2 solution, a large number of bubbles and precipitation were observed. Then put the beaker into the ultrasonic pool for continuous ultrasonication for 1 h. Finally, the obtained product was washed with deionized water and ethanol water, filtered, dried in an oven at 60°C overnight, and ground to obtain Ni-MnO 2 .

Embodiment 2

[0028] Embodiment 2 (comparative example)

[0029] At room temperature, 0.357g Mn(NO 3 ) 2 Dissolve in ultrapure water to form a 40ml solution, adjust the pH to 9 with NaOH with a concentration of 1mol / L under the condition of sufficient stirring, and then add 1mL of 30% H 2 o 2 solution, a large number of bubbles and precipitation were observed. Then put the beaker into the ultrasonic pool for continuous ultrasonication for 1 h. Finally, the obtained product was washed with deionized water and ethanol water, filtered, dried in an oven at 60°C overnight, and ground to obtain the material MnO 2 .

[0030] figure 1 In order to obtain the material Ni-MnO 2 The schematic diagram of the synthesis.

[0031] figure 2 In order to obtain the material MnO 2 with Ni-MnO 2 SEM images of different magnifications. (a)-(b) are MnO 2 SEM image of the material, (c)-(d) is Ni-MnO 2 SEM image of the material.

[0032] image 3 In order to obtain the material MnO 2 with Ni-MnO ...

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Abstract

The invention discloses a preparation method and application of an electrode material capable of regulating and controlling MnO2 by means of nickel doping induced lattice distortion, and belongs to the field of material preparation. The performance of MnO2 is regulated and controlled through simple nickel doping induced lattice distortion, so that the electrochemical performance and stability of the manganese dioxide electrode material are improved. The method is free of high temperature and high pressure in preparation, safe in process, simple in step and easy to operate.

Description

technical field [0001] The invention belongs to the field of electrode material preparation, and mainly relates to a preparation method of supercapacitor electrode materials. Background technique [0002] With the rapid growth and urbanization of the global population, the demand for energy continues to grow. The demand for efficient and low-cost energy storage systems is rising sharply, which greatly promotes the research and development of clean energy and the development of renewable energy storage devices. Research in energy storage technologies is trying to keep up with the development of new materials and devices. As a new type of renewable energy storage device, supercapacitors have attracted extensive attention due to their fast charge and discharge rates, long cycle life, and high power density. [0003] Supercapacitors are also known as electrochemical capacitors. It is a new type of energy storage device between traditional capacitors and rechargeable batteries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/46H01G11/86
CPCH01G11/24H01G11/46H01G11/86
Inventor 杨志宇姚舒允王诗雨严乙铭
Owner BEIJING UNIV OF CHEM TECH
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