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Reactive sintering of ceramic lithium ion electrolyte membranes

An electrolyte membrane and lithium-ion technology, applied in the direction of electrolytes, non-aqueous electrolytes, solid electrolytes, etc., can solve the problems of increasing the complexity and/or cost of the manufacturing process, achieve improved stability and/or durability, and increase product output , the effect of high conductivity

Inactive Publication Date: 2017-09-26
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a creep flattening step, such as annealing the film under weight, may be required to produce a fina

Method used

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  • Reactive sintering of ceramic lithium ion electrolyte membranes
  • Reactive sintering of ceramic lithium ion electrolyte membranes
  • Reactive sintering of ceramic lithium ion electrolyte membranes

Examples

Experimental program
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Embodiment Construction

[0070] Via LAP glass and GeO 2 Preparation of LAGP

[0071] The composition of Li was prepared according to the following procedure 1+x al x Ge 2-x (PO 4 ) 3 lithium-ion ceramic electrolyte. By batching 400 g of LiH in a 650 cc covered platinum crucible 2 PO 4 , Al(PO 3 ) 3 and (NH 4 ) 3 PO 4 (with 1 mol% excess Li 2 O), and melt the mixture at 1200°C for 2 hours, first prepare the composition as Li 2 O-Al 2 o 3 -P 2 o 5 (29.15, 8.66, 62.19 mol%, respectively) lithium-aluminum-phosphate (LAP) glass. Dosing is done by dry mixing powder sources followed by mixing with liquid ammonium phosphate in platinum crucibles. The slurry was then calcined at 300°C overnight, after which the crucible was transferred to a furnace operating at 1200°C for a period of 2 hours. The resulting melt was poured onto a stainless steel table and roll quenched to form flakes.

[0072] The LAP glass was ground into powder and mixed with GeO 2 Powder bound. The resulting mixture ...

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Abstract

Disclosed are methods for making a solid lithium ion electrolyte membrane, the methods comprising combining a first reactant chosen from amorphous, glassy, or low melting temperature solid reactants with a second reactant chosen from refractory oxides to form a mixture; heating the mixture to a first temperature to form a homogenized composite, wherein the first temperature is between a glass transition temperature of the first reactant and a crystallization onset temperature of the mixture; milling the homogenized composite to form homogenized particles; casting the homogenized particles to form a green body; and sintering the green body at a second temperature to form a solid membrane. Solid lithium ion electrolyte membranes manufactured according to these methods are also disclosed.

Description

[0001] This application claims the benefit of priority under 35 U.S.C. §120 to U.S. Application Serial No. 14 / 599,692, filed January 19, 2015, which application is based upon and is hereby incorporated by reference in its entirety. [0002] Government License Rights [0003] This invention was made under the PRIME AWARD No. DE-EE-0005757 funded by the Department of Energy and subcontract award No. PPBC-CORNING IMI 10-2012 by Corning Incorporated with government support ) to complete. The government has certain rights in this invention. technical field [0004] The present disclosure generally relates to methods for fabricating ceramic lithium-ion solid electrolytes, and more specifically, to a reaction sintering process for forming dense, uniform electrolyte membranes. Background technique [0005] Solid electrolytes, also known as fast ion conductors, are materials that can act as solid-state ion conductors and are used, for example, in solid oxide fuel cells and lithium-...

Claims

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Application Information

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IPC IPC(8): H01M10/0562H01M10/052C03B19/06C01B25/45
CPCC01B25/45C03B19/06H01M10/052H01M10/0562H01M2300/0071Y02E60/10H01M2300/0068
Inventor M·E·巴丁I·杜塔S·R·艾耶B·A·肯特N·T·隆罗斯
Owner CORNING INC