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Core-shell composite, method for producing same, electrode material, catalyst, electrode, secondary battery, and electric double-layer capacitor

A manufacturing method and complex technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, battery electrodes, etc., can solve the problems of low electrode capacity, low energy density and low voltage of lithium-ion capacitors, and achieve high efficiency effect

Active Publication Date: 2018-09-28
TEIKOKU PISTON RING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with graphite, hard carbon has a lower capacity per unit volume of the electrode and lower voltage than graphite (it becomes positive potential)
Therefore, there is a problem that the energy density of lithium-ion capacitors becomes low.

Method used

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  • Core-shell composite, method for producing same, electrode material, catalyst, electrode, secondary battery, and electric double-layer capacitor
  • Core-shell composite, method for producing same, electrode material, catalyst, electrode, secondary battery, and electric double-layer capacitor
  • Core-shell composite, method for producing same, electrode material, catalyst, electrode, secondary battery, and electric double-layer capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0240] "Nanoporous Carbon"

[0241] In 20 mL of ethanol, 175 mg of zinc acetate and 300 mg of polyvinylpyrrolidone were dissolved to prepare an aqueous solution containing them. After adding zinc acetate and polyvinylpyrrolidone to water, the time for stirring their mixture was 30 minutes, and the temperature at the time of stirring the mixture was 25°C.

[0242] In 20 mL of ethanol, 263 mg of 2-methylimidazole was dissolved to prepare an ethanol solution containing 2-methylimidazole. After throwing 2-methylimidazole into ethanol, the time for stirring their mixture was 30 minutes, and the temperature at the time of stirring the mixture was 25°C.

[0243] The above-mentioned alcohol solution was added to the above-mentioned aqueous solution, and these solutions were stirred at 25° C. for 5 minutes. Thus, in the mixed solution of the above-mentioned aqueous solution and the above-mentioned alcohol solution, ZIF-8, which is a metal organic structure, was produced as a precipit...

Embodiment 2

[0267] "Button Battery"

[0268] As the organic electrolytic solution, 0.1 mL of tetraethylammonium tetrafluoroborate (TEA-BF4) of 1Mol / L was used, and for the current collector, an etched aluminum foil was used for the positive electrode and activated carbon (trade name : MSP-20), except that, in the same manner as in Example 1, the 2032-type button battery of Example 2 was produced. Here, in the negative electrode, activated carbon MSP-20, carbon black as a conductive material, and polyvinylidene fluoride (PVDF) as a binder were mixed with N-methyl-2-pyrrolidone at a ratio of 90:5:5wt%. A paste was obtained by mixing, and the obtained paste was coated on an etched aluminum foil using a doctor blade, and then dried at 160° C. to prepare a negative electrode material.

[0269] For the button cell of Example 2, using the VSP manufactured by Bio-Logic Corporation, at room temperature (23°C) and under the conditions of a scan rate of 1 mV / s to 200 mV / s, the voltage of 0 V to 2.5...

Embodiment 3

[0271] "Core-shell complex"

[0272] The nanoporous carbon obtained in Example 1 was impregnated for 10 minutes in an aqueous dispersion obtained by dispersing polythiophene-polystyrenesulfonic acid (PEDOT / PSS) in water.

[0273] Thereafter, the aqueous dispersion was filtered, the solid content contained in the aqueous dispersion was recovered, and the solid content was washed with distilled water.

[0274] Thereafter, the solid content was vacuum-dried at 80° C. for 24 hours to obtain nanoporous carbon and conductive polymer (PEDOT / PSS) nanorods extending outward from the pores on the surface of the nanoporous carbon. The core-shell complex of Example 3 of the shell layer.

[0275] "Button Battery"

[0276] A 2032-type coin cell of Example 3 was fabricated in the same manner as in Example 1 except that the core-shell composite of Example 3 was used.

[0277] For the button battery of Example 3, the capacity was obtained in the same manner as in Example 1. When the capaci...

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Abstract

This core-shell composite (10) is characterized by being provided with a core (11) comprising a porous carbon body having a large number of pores from the interior to the surface, and a shell layer (12) comprising electroconductive polymer nano rods (12a) extending outward from the cavities of the pores (11a) on the surface of the core. The present invention provides: the core-shell composite (10)with which electrolyte ions can be efficiently adsorbed or doped; a method for producing same; and an electrode material, catalyst, electrode, secondary battery, and electric double-layer capacitor using same.

Description

technical field [0001] The present invention relates to a core-shell complex and a manufacturing method thereof, an electrode material, a catalyst, an electrode, a secondary battery, and an electric double-layer capacitor. [0002] This application claims priority based on Japanese Patent Application No. 2016-020182 for which it applied in Japan on February 4, 2016, and uses the content here. Background technique [0003] Conventionally, electric double layer capacitors and secondary batteries have been known as techniques for storing electric energy (for example, refer to Patent Document 1). Electric double layer capacitors are exceptionally superior in life, safety, and power density compared to secondary batteries. However, electric double layer capacitors have a problem of low energy density (volume energy density) compared with secondary batteries. [0004] Therefore, in order to improve the energy density of the electric double layer capacitor, technical solutions fo...

Claims

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Application Information

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IPC IPC(8): H01G11/42H01G11/24H01G11/48H01G11/86H01M4/36H01M4/38H01M4/60
CPCH01B1/04H01B1/12H01G11/24H01G11/36H01G11/38H01G11/48H01G11/86H01M4/36H01M4/38H01M4/60Y02E60/10Y02E60/13H01G11/42
Inventor 小林直哉山内悠辅拉胡尔·萨伦克汤静
Owner TEIKOKU PISTON RING CO LTD
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