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Battery having aluminum anode and solid polymer electrolyte

A conductive polymer and battery technology, applied in the field of electrochemical batteries, can solve problems such as expensive and low system specific volume

Inactive Publication Date: 2018-06-08
IONIC MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As disclosed in Nature 520, 324-328, ionic liquid electrolytes can achieve rechargeable behavior, however, they are expensive and due to AlCl 4 - The ions participate in the redox process described by formula (2), which results in a low system specific volume

Method used

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  • Battery having aluminum anode and solid polymer electrolyte
  • Battery having aluminum anode and solid polymer electrolyte
  • Battery having aluminum anode and solid polymer electrolyte

Examples

Experimental program
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Effect test

Embodiment 1

[0130] The solid ion-conducting polymer material was synthesized in two aspects to describe how the material can be used in different aspects of battery design:

Embodiment 1A

[0132] The PPS polymer was mixed with the ionic compound LiOH monohydrate in a proportion of about 10-40% (by weight) of the metal hydroxide, respectively, and mixed using jet milling. The undoped mixture was heated at 320-380°C and extruded into a 10-15 micron thick film. The extruded film was then annealed at 150 °C for about 2 hours to increase the crystallinity of the blended PPS polymer. In a tube furnace under vacuum at a temperature of 190-200 °C, chloranil dopant was added to the resulting mixture by steam doping for 1-16 hours to synthesize a solid ion-conducting polymer material (PPS / LiOH / Chloranil). The synthesized material underwent a color change during doping, indicating that a chemical reaction had occurred and indicating the formation of a solid ionically conductive polymer material.

Embodiment 1B

[0134] In one aspect, solid ion in particulate form was synthesized by first mixing the DDQ dopant and the base polymer PPS at a ratio of 1 mole DDQ per 4.2 moles of PPS monomer, and heating between 250°C and 325°C to form a particulate form Conductive polymer material (PPS / LiOH / DDQ). Ionic LiOH is mixed into the specific form to produce the solid ionically conductive polymer material.

[0135] The electronic conductivity of the materials in Examples 1A and 1B was measured using a potentiostatic method between blocking electrodes and was determined to be about 6.5 x 10 -9 S / cm (less than or conductivity less than 1×10 -8 S / cm).

[0136] Ionic diffusivity measurements were performed on the compression-molded pellet form of the PPS / LiOH / DDQ material using basic NMR techniques. Specifically, the diffusivity of lithium and hydroxide ions was evaluated by pulsed gradient spin echo ("PGSE") lithium NMR method. PGSE-NMR measurements were performed using a Varian-S Direct Drive 30...

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Abstract

A battery, having polyvalent aluminum metal as the electrochemically active anode material and also including a solid ionically conducting polymer material.

Description

technical field [0001] The present invention relates generally to electrochemical cells comprising aluminum as an electrochemically active anode material, and more particularly to aluminum cells, their component alkaline cathodes and electrolytes comprising solid ionically conducting polymer materials. Background technique [0002] Aluminum is a particularly attractive anode material due to its high theoretical voltage and specific energy. However, aluminum is a very reactive metal and participates in corrosion side reactions (1) in aqueous systems, which are impractical for secondary systems: [0003] Al+H 2 O→Al(OH) 3 +3 / 2H 2 (1) [0004] Aluminum has been investigated for use as an ion in aluminum-ion batteries. However, there is no actual aluminum embedded in the cathode. Aluminum ions have low ionic conductivity in electrolytes. [0005] As disclosed in Nature 520, 324-328, ionic liquid electrolytes can achieve rechargeable behavior, however, they are expensive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/056H01M10/05H01M10/054H01M10/0562H01M10/0565
CPCH01M10/054H01M10/0565H01M4/463H01M4/624H01M10/24H01M4/131H01M4/381H01M4/50H01M4/134H01M2300/0082Y02E60/10Y02P70/50H01M4/602H01M4/62H01M4/137H01M4/364H01M4/366H01M2004/027H01M2004/028H01M4/136H01M4/1395H01M4/1399H01M10/0562H01M4/466
Inventor M·A·齐莫尔曼A·B·加夫里洛夫T·刘K·史密斯
Owner IONIC MATERIALS INC
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