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A kind of water system rechargeable sodium ion capacitor battery and preparation method thereof

A capacitor battery, sodium ion technology, used in hybrid capacitor electrodes, hybrid capacitor electrolytes, hybrid/electric double layer capacitor manufacturing and other directions, can solve the problems of poor long-term cycle life, unfriendly environment, resource shortage, etc. Long, low cost and energy efficient effect

Active Publication Date: 2019-11-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the current large-scale water system energy storage devices (such as lead-acid batteries and nickel-metal hydride batteries) with high cost, poor long-term cycle life, unsafety, resource shortage, and unfriendly environment, people are turning their attention to To an aqueous electrolyte lithium-ion or sodium-ion secondary energy storage device with the advantages of low cost, high safety, environmental friendliness, and abundant resources

Method used

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  • A kind of water system rechargeable sodium ion capacitor battery and preparation method thereof
  • A kind of water system rechargeable sodium ion capacitor battery and preparation method thereof
  • A kind of water system rechargeable sodium ion capacitor battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Na 0.44 MnO 2 / Activated carbon capacitor battery assembly and performance

[0036] Na 0.44 MnO 2 Preparation of active material: MnO with a molar ratio of 1:0.22 2 and Na 2 CO 3 After grinding, pressing under 10MPa pressure, calcining in air atmosphere at 500°C for 5h, lowering to room temperature, grinding again, pressing under 10MPa pressure, calcining in air atmosphere at 900°C for 12h, after complete reaction, deionized water and anhydrous Washed with ethanol to remove miscellaneous ions, and dried in an air atmosphere at 60°C.

[0037] Positive electrode sheet preparation: add a small amount of absolute ethanol as a solvent, and Na with a mass ratio of 80:16:4 0.44 MnO 2 The active material, the acetylene black conductive agent, and the PTFE binder are mixed evenly, pressed into tablets, and dried to obtain an active positive electrode sheet.

[0038] Negative electrode sheet preparation: add a small amount of absolute ethanol as a solvent, mix...

Embodiment 2

[0044] Example 2: Na 0.44 MnO 2 / Activated carbon capacitor battery assembly and performance

[0045] Na 0.44 MnO 2 Preparation of active material: MnCO with a molar ratio of 1:0.22 3 、Na 2 CO 3 Grinding and mixing, according to NaCl and Na 2 CO 3 The molar ratio of NaCl is 23:1, adding NaCl as co-solvent, continue grinding and mixing, and calcining in air atmosphere at 850°C for 5h. Drying in medium, made.

[0046] Positive electrode sheet preparation: add a small amount of absolute ethanol as a solvent, and Na with a mass ratio of 80:16:4 0.44 MnO 2 The active material, the acetylene black conductive agent, and the PTFE binder are mixed evenly, pressed into tablets, and dried to obtain an active positive electrode sheet.

[0047] Negative electrode sheet preparation: add a small amount of absolute ethanol as a solvent, mix the commercial activated carbon material with a mass ratio of 80:16:4, acetylene black conductive agent, and PTFE binder, press into tablets, a...

Embodiment 3

[0051] Example 3: Na 0.44 mn 0.9 Li 0.1 o 2 / Mesoporous carbon capacitor battery assembly and performance

[0052] Na 0.44 mn 0.9 Li 0.1 o 2 Preparation of active material: according to the molar ratio of 1.8:0.44:0.1 MnCO 3 、Na 2 CO 3 , Li 2 CO 3 Grinding and mixing, according to NaCl and Na 2 CO 3 The molar ratio of NaCl is 23:1, adding NaCl as co-solvent, continue grinding and mixing, and calcining in air atmosphere at 850°C for 5h. Drying in medium, made.

[0053] Positive electrode sheet preparation: add a small amount of absolute ethanol as a solvent, and Na with a mass ratio of 80:15:5 0.44 mn 0.9 Li 0.1 o 2 The active material, the acetylene black conductive agent, and the PTFE binder are mixed evenly, pressed into tablets, and dried to obtain an active positive electrode sheet.

[0054] Negative electrode sheet preparation: add a small amount of absolute ethanol as a solvent, mix the mesoporous carbon material with a mass ratio of 80:15:5, acetylene...

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Abstract

The present invention relates to a water system rechargeable sodion capacitor battery and a preparation method thereof. The active materials of the anode of the capacitor battery employ Na0.44MnO2 or ion doped Na0.44MnO2, the general formula is Na0.44Mn1-yMyO2, wherein M is one or two of the Al, Li, Fe, Co and Ni, 0<=y=<0.1; and the active materials of the cathode employ one of porous active carbon, hard carbon, mesoporous carton, carbon nanotube, disordered carbon and graphite. The capacitor battery has high specific capacity, high power density, long cycle service life and good rate capability functions, and is safe, environmentally friendly and low in cost and the like. The preparation anode material process through adoption of a flux solid phase reaction method is better environmentally friendly than the reaction process without the flux, and the prepared active materials of the anode has more discharge specific capacity.

Description

technical field [0001] The invention belongs to the technical field of secondary capacitor batteries, in particular to a water system rechargeable sodium ion capacitor battery and a preparation method thereof. Background technique [0002] With the development of renewable energy (solar energy, wind energy) and renewable energy power generation technology, it is necessary to seek a renewable energy storage device with large energy storage capacity. In the future, large-scale, stationary energy storage secondary energy storage devices not only need to have appropriate electrochemical performance, but also need to meet application requirements such as resource, cost, and environmental benefits. Compared with the current large-scale water system energy storage devices (such as lead-acid batteries and nickel-metal hydride batteries) with high cost, poor long-term cycle life, unsafety, resource shortage, and unfriendly environment, people are turning their attention To an aqueou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/06H01G11/84H01G11/46H01G11/58H01G11/60H01G11/34
CPCH01G11/06H01G11/34H01G11/46H01G11/58H01G11/60H01G11/84Y02E60/13
Inventor 蒲薇华王珊珊叶霞吴玉龙杨明德
Owner TSINGHUA UNIV
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