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Electrochemical device and manufacturing method thereof

An electrochemical and structural technology, applied in electrochemical generators, hybrid/electric double layer capacitor manufacturing, final product manufacturing, etc., can solve problems such as difficult manufacturing

Inactive Publication Date: 2019-12-13
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These devices may have limited rate capability and may be difficult to fabricate due to the requirement for controlled humidity and other conditions

Method used

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  • Electrochemical device and manufacturing method thereof
  • Electrochemical device and manufacturing method thereof
  • Electrochemical device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example A

[0197] Preparation Example A (PE-A)

[0198] Preparation of printable electrode ink-1

[0199] Use a double asymmetric centrifugal mixer operating at 2500-3000 revolutions per minute (rpm) (available under the trade name "SPEEDMIXER DAC 150SERIES" from FlackTek Inc. (FlackTek Inc., Landrum, SC), Landrum, South Carolina) ) To mix 2.28 grams of activated carbon ("YP-50F") for supercapacitors, 2.1 grams of ethyl cellulose solution (dissolved in a 10.3:1 blend of monoterpene alcohol ("TERPINEOL") and ethanol 5.7wt % Ethyl cellulose), 0.45 grams of conductive carbon black ("SUPER P CONDUCTIVE CARBON BLACK"), 0.15 grams of fumed silica ("CABOSIL M5"), and 6.25 grams of monoterpene alcohol ("TERPINEOL"), Until a uniform consistency is obtained, usually 3-5 minutes. The resulting composition is suitable for screen printing.

preparation example B

[0200] Preparation Example B (PE-B)

[0201] Preparation of printable electrode ink-2

[0202] Prepare PE-B in the same way as PE-A, except that: 2.34 grams of pseudo-capacitive MnO are mixed 2 , 1.66 grams of ethyl cellulose solution (5.7 wt.% ethyl cellulose dissolved in a 10.3:1 blend of monoterpene alcohol ("TERPINEOL") and ethanol), 0.45 grams of conductive carbon black ("SUPER P CONDUCTIVE CARBON BLACK"), 0.15 grams of fumed silica ("CABOSIL M5"), and 10 grams of monoterpene alcohol ("TERPINEOL"). The resulting composition is suitable for screen printing.

[0203] Synthesize the pseudo-capacitive MnO from the above through conventional techniques 2 , Where mixed KMnO 4 The aqueous solution and the aqueous solution of manganese acetate to make MnO 2 precipitation. In order to synthesize the powder, 3.16 g KMnO 4 Dissolved in 120mL distilled water. Separately, 7.36 grams of Mn(OAc) 2 Dissolved in 200mL distilled water. Use a burette to add KMnO 4 The solution is slowly adde...

preparation example C

[0204] Preparation Example C (PE-C)

[0205] Prepare PE-C in the same way as PE-A, except that: mix 3.2 grams of ethyl cellulose solution (dissolved in a single glass) in a mixing cup containing about five 3.5mm glass media balls and about ten 2mm glass media balls 5.7 wt.% ethyl cellulose in a 10.3:1 blend of terpene alcohol ("TERPINEOL") and ethanol), 12 grams of calcined alumina ("AC34B4"), 0.12 grams of fumed silica ("CABOSIL M5"), and 5 grams of monoterpene alcohol ("TERPINEOL"), and mixed using a double asymmetric centrifugal mixer ("SPEEDMIXER DAC 150SERIES") operating at 2500-3000 revolutions per minute (rpm) until uniform The consistency is usually 3-5 minutes. The resulting composition is suitable for screen printing.

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Abstract

The invention discloses an electrochemical device (for example, a capacitive device, a battery or a hybrid device) comprising the following items enclosed in a package (19): a layer construction comprising at least one combination (11), wherein each combination (11) comprises a porous particulate separator layer (13) disposed between a first porous electrode layer (12) and a second porous electrode layer (14); and optionally at least one particulate current collector layers (16, 17); and a liquid electrolyte (15), and wherein substantially all of the liquid electrolyte is confined within the layer construction. A capacitive electrochemical device comprising: a first assembly having a porous particulate separator layer disposed between a first porous electrode layer and a second porous electrode layer; optionally at least one particulate current collector layer; and liquid electrolyte.

Description

[0001] Cross references to related applications [0002] This application claims the benefits of US Provisional Patent Application No. 61 / 746,210 filed on December 27, 2012, the disclosure of which is incorporated herein by reference in its entirety. Background technique [0003] Electrochemical devices such as batteries and EDLC often include a series of functional components such as anodes, separators, and cathodes. During charging, a negative potential is applied to the anode and a positive potential is applied to the cathode. When the device discharges, electrons flow through the external circuit from the anode to the cathode. The anode and cathode are electrodes. The separator is used to prevent direct contact between the anode material and the cathode material, so that electrons cannot be directly conducted from the anode to the cathode in the device. The separator contains a material with very low or negligible electronic conductivity. The electrode and the separator may...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/02H01G11/12H01G11/82H01G11/84H01G11/52H01G11/78H01G11/70H01M50/105
CPCH01G11/12H01G11/52H01G11/82H01G11/84H01G11/70H01G11/78H01G11/02H01M50/105H01M10/0463H01M10/0525H01M10/0585Y10T29/49117Y02E60/10Y02P70/50H01M4/70H01G11/26H01G11/58H01G11/10H01G11/66H01G11/86Y02E60/13
Inventor K·D·巴德D·K·凯勒
Owner 3M INNOVATIVE PROPERTIES CO