Microstructured ion-conducting composites and uses thereof

An ion-conducting, microporous material technology, applied in structural parts, circuits, electrolytes, etc., to solve problems such as fire and short circuit

Active Publication Date: 2019-08-06
SEPION TECH INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These dendrites diffuse until the anode and cathode are bridged by conductive lithium, causing an unwanted electrical connection between the two sides of the battery, shorting it out and causing a fire

Method used

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  • Microstructured ion-conducting composites and uses thereof
  • Microstructured ion-conducting composites and uses thereof
  • Microstructured ion-conducting composites and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] Embodiment 1: preparation of the first film layer

[0137] Dissolve an intrinsically microporous polymer such as PIM-1 in a suitable solvent (e.g. THF) or solvent mixture at a concentration of 10-500 g L –1 , with salt-containing halides (such as lithium iodide, sodium iodide, potassium iodide, rubidium iodide, cesium iodide, magnesium iodide, tetramethylammonium iodide, tetraethylammonium iodide, tetrapropylammonium iodide Ammonium, tetrabutylammonium iodide, lithium bromide, sodium bromide, potassium bromide, rubidium bromide, cesium bromide, magnesium bromide, tetramethylammonium bromide, tetraethylammonium bromide, tetrapropylammonium bromide Ammonium, tetrabutylammonium bromide, lithium chloride, sodium chloride, potassium chloride, rubidium chloride, cesium chloride, magnesium chloride, tetramethylammonium chloride, tetraethylammonium chloride, tetrapropylammonium chloride Ammonium, tetrabutylammonium chloride, lithium fluoride, sodium fluoride, potassium fluor...

Embodiment 2

[0140] Example 2: Lithium Metal Battery Cycle

[0141] Ideally, assemble the electrochemical cell in an argon-filled glove box, dry room, or other suitably inert environment for handling lithium metal battery components.

[0142] Some electrochemical cells are assembled in a symmetrical fashion, consisting of a lithium metal electrode, a coated separator, a liquid electrolyte, a second coated separator, and a second lithium metal electrode. In each case, the composite first film layer is in contact with the lithium metal surface. These symmetrical cells can operate at 0.1-3mA cm –2 Under the constant current cycle, during which the overpotential of lithium metal plating can be measured, and when the current density is considered, the area specific resistance of the plating can be calculated from it, and the short circuit situation generated by lithium metal dendrites can be observed from it, because it varies with the current density, The areal capacity of lithium moved in...

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Abstract

A composite membrane with nanostructured inorganic and organic phases is applied as an ion-selective layer to improve processability, prevent dendrite shorting, and increase power output of lithium-metal anodes through better Li-ion conductivity. Nanoconfinement, as opposed to macroscale confinement, is known to dramatically alter the properties of bulk materials. Control over a ceramic's size, shape, and properties is achieved with polymer templates. This is a new composition of matter and unique approach to composite membrane design.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 62 / 431,300, filed December 7, 2016, the entire contents of which are hereby incorporated for all purposes. [0003] Statement of Government Support [0004] This invention was made with Government support under Grant No. DE-AC02-05CH11231 awarded by the U.S. Department of Energy and Grant No. FA9550-11-C-0028 awarded by the U.S. Department of Defense. The government has certain rights in this invention. [0005] Background of the invention [0006] Impressive progress has been made in the past decade in the manufacture of affordable lithium-ion (Li-lithium) batteries. These advances usher in an era of electrification, where everything from the computers in our pockets to the cars we drive can be powered by lithium-ion battery technology. Unfortunately, the energy demands of any of these applications have put pressure on the battery industry, approaching...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J5/22H01M2/14H01M2/16H01M10/0525H01M50/403H01M50/409H01M50/451H01M50/491H01M50/497
CPCH01M10/052H01M10/056H01M2300/0094H01M10/4235H01M4/134Y02E60/10H01M50/409H01M50/446H01M50/46H01M50/403Y02P70/50H01M50/451H01M50/491H01M50/497H01M50/431H01M4/131H01M4/133H01M10/0525H01M10/0569
Inventor P·D·弗里施曼B·A·赫尔姆斯
Owner SEPION TECH INC
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