Method for preparation of plate-type manganese dioxide nanoparticle

A technology of manganese dioxide and nanoparticles, which is applied in the direction of manganese oxide/manganese hydroxide, hybrid capacitor electrodes, etc., and can solve problems such as complex preparation methods

Pending Publication Date: 2020-05-01
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] On the other hand, studies have also been conducted to prepare spherical amorphous particles or uniquely shaped metal oxide particles, but in most cases, the particles grow by adhering to conductive materials, or the preparation method is complicated

Method used

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  • Method for preparation of plate-type manganese dioxide nanoparticle
  • Method for preparation of plate-type manganese dioxide nanoparticle
  • Method for preparation of plate-type manganese dioxide nanoparticle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (step 1)

[0052] 2 mmol of manganese acetate and 20 mL of water were put into a reaction vessel, and 4 mmol of glycine was added thereto. Then, 5 g NaOH and 50 mL water were added, and the reaction was stirred at room temperature for 30 minutes.

[0053] (step 2)

[0054]To the product of step 1, a further 1.6 g of K was added 2 S 2 o 8 and 50 mL of water, and the mixture was further reacted at room temperature for 12 hours to prepare platy manganese dioxide.

Embodiment 2

[0056] (step 1)

[0057] 40 mg of CNT, 2 mmol of manganese acetate, and 20 mL of water were put into a reaction vessel, and 4 mmol of glycine was added thereto. Then, 5 g NaOH and 50 mL water were added, and the reaction was stirred at room temperature for 30 minutes.

[0058] (step 2)

[0059] To the product of step 1, a further 1.6 g of K was added 2 S 2 o 8 and 50 mL of water, and the mixture was further reacted at room temperature for 12 hours to prepare platy manganese dioxide.

Embodiment 3

[0061] Plate-shaped manganese dioxide was prepared in the same manner as in Example 2 except that cysteamine was used instead of glycine.

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Abstract

A preparation method according to the present invention is to utilize an amine-based coupling agent to prepare plate-type manganese dioxide nanoparticles. The prepared plate-type manganese dioxide nanoparticles can be suitably combined with a carbon-based conductive material and are thus useful as a cathode material for pseudo-capacitors.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of the filing date of Korean Patent Application No. 10-2017-0149678 filed with the Korean Intellectual Property Office on November 10, 2017, the entire contents of which are incorporated herein by reference. [0003] The invention relates to a preparation method of plate-like manganese dioxide nanoparticles. Background technique [0004] A supercapacitor is an energy storage device, and its field of application expands variously from small to large. Supercapacitors are characterized by high charge / discharge rates and long charge / discharge cycle life. In supercapacitors, pseudocapacitors use metal oxides as cathode materials. Recently, since manganese dioxide has a wide operating voltage range, many studies have been conducted. [0005] In order to increase the energy storage capacity per unit mass of capacitors, research is frequently conducted to increase the su...

Claims

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Application Information

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IPC IPC(8): C01G45/02H01G11/42
CPCC01G45/02H01G11/42C01P2004/03Y02E60/13C01P2004/20C01P2004/64C01P2004/24H01G11/46
Inventor 李豪燮尹锡炫柳炳国
Owner LG ENERGY SOLUTION LTD
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