ES2605357T3 - Mezcla ternaria de polímero aprótico - sal fundida -disolvente, procedimiento de fabricación y uso en los sistemas electroquímicos - Google Patents

Mezcla ternaria de polímero aprótico - sal fundida -disolvente, procedimiento de fabricación y uso en los sistemas electroquímicos Download PDF

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ES2605357T3
ES2605357T3 ES05794996.8T ES05794996T ES2605357T3 ES 2605357 T3 ES2605357 T3 ES 2605357T3 ES 05794996 T ES05794996 T ES 05794996T ES 2605357 T3 ES2605357 T3 ES 2605357T3
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carbonate
mixture
solvent
molten salt
membrane
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Karim Zaghig
Patrick Charest
Abdelbast Guerfi
Martin Dontigny
Michel Peticlerc
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Abstract

Composición caracterizada por que comprende: - al menos un 20 % en peso de un polímero aprótico reticular adecuado para formar una película, siendo dicha película de polímero un poliéter de tres ramas, un poliéter de cuatro ramas, un copolímero de óxido-2,3-epoxi-1- propanol etileno, o una mezcla de estos; - una sal fundida constituida por una sal de un catión orgánico que es imidazolio, imidinio, piridinio, amonio, pirolio, sulfonio, fosfonio, o una mezcla de estos; - un disolvente orgánico que tenga un punto de ebullición superior a 125 ºC en condiciones normales de temperatura y de presión, siendo dicho disolvente carbonato de etileno (EC), carbonato de propileno (PC), carbonato de dimetilo (DMC), carbonato de dietilo (DEC), carbonato de etilmetilo (EMC), γ-butirolactona (GBL), carbonato de vinilo (VC), butirato de vinilo (VB), o una mezcla de estos; y - opcionalmente, una sal de conducción iónica.

Description

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La reticulación térmica o infrarroja se realiza también por adición de un agente de reticulación.
En el caso de una reticulación por haz de electrones, no es indispensable añadir un agente de reticulación.
5 Una vez reticulada, la membrana seca se introduce en una mezcla de baño de sal fundida y de disolvente (SS).
El electrolito PSS transferido por comunicación sobre el soporte de PP está depositado ahora ventajosamente sobre uno de los electrodos de cualquier dispositivo electrónico, tal como una ventana electrocrómica. El PP se despega fácilmente del PSS.
10 1-b Membrana obtenida a partir de una mezcla líquida
En este procedimiento, los tres componentes polímero, sal fundida y disolvente, se mezclan conjuntamente en presencia de un iniciador y de acuerdo con las secuencias de reacción ilustradas en las Figuras 2 a 5.
15 La mezcla así obtenida se extiende sobre un soporte de PP después de la reticulación (UV o IR, o térmico o haz de electrones). El electrolito PSS se transfiere y adapta a un electrolito del dispositivo electrocrómico.
2. Procedimiento de fabricación del dispositivo electrónico
20 2a -Con una membrana seca humedecida en una mezcla de SS
La Figura 11 muestra el esquema de un dispositivo electrocrómico de acuerdo con la invención. El electrolito PSS está unido a uno de los electrodos, bien (Li4Ti5O12) o bien al electrodo de carbono. Este tipo de tecnología 25 electrocrómica funciona de la misma forma que un supercondensador híbrido, que se describe en la patente de Hydro-Québec EP-A-1.339.642.
Las reacciones electroquímicas aplicadas durante el funcionamiento son las siguientes:
30 WO3 (transparente) + xLi + xe -LixWO3 (azul)
C + FSI -C ... FSI -+ e
2b -Montaje con la membrana seca
35 La membrana seca se dispone sobre uno de los electrodos. Tras el montaje, el dispositivo se precinta, se deja un orificio en la celda electrocrómica para introducir la mezcla de SS.
Una vez que se ha introducido el SS en la célula prevista, el orificio se precinta posteriormente con una cola sin 40 presión de vapor tal como Torr Seal.
2c -Montaje sin membrana de polímero
Tras el precintado del dispositivo de la Figura 10, se deja abierto un orificio para introducir la mezcla de PSS y el 45 agente reticulante. La distancia de vacío entre los electrodos varía entre 15 y 50 micrómetros, tras la introducción de la mezcla por el orificio, el precintado del orificio es muy rápido cuando se utiliza un sellador de tipo Tor Seal.
El dispositivo se calienta a 80 grados centígrados o se expone a la radiación de una lámpara IR durante aproximadamente 1 hora. El electrolito así formado es transparente. 50 2d -Por extensión del PSS sobre el electrodo
La mezcla de SPP se extiende por el método del docteur Blade o extrusión y se coloca sobre el electrodo y después se deposita en el contraelectrodo. Análogamente, el PSS se expande sobre el contraelectrodo y después se dispone 55 sobre el electrodo de trabajo.
A continuación, el dispositivo se precinta.
Ejemplos
60 Los ejemplos siguientes se proporcionan a título meramente ilustrativo, y no deberían interpretarse como una limitación cualquiera del objeto de la presente invención.
13 5
15
25
35
45
55
65
Ejemplo, 1: preparación de una membrana basada en sal fundida de propil-metil-imidazolio
15 gramos de polímero de 4 ramas (El Excel®-PA-210 comercializado por la empresa DKS Japón) se mezcla con 0,15 gramos del fotoiniciador de tipo KT046 comercializado por la empresa Sartomer (Isacure). La mezcla se extendió sobre un soporte de polipropileno (PP) de 24 micrómetros de espesor.
Tras el paso durante 5 segundos bajo una lámpara UV, que emite una energía de 10 mW, se obtiene una película de polímero de 20 micrómetros. La película de polímero se seca al vacío durante 24 horas.
Esta película se sumerge, durante 5 minutos, en un recipiente de acero inoxidable que contiene una solución de 20 gramos de SS: sal fundida (propilmetilimidazol + LiTFSI 1 M) y del disolvente (VC: carbonato de vinilo). La relación entre la sal fundida y el disolvente es de 90: 10 en peso.
El PP se desprende de forma natural de la membrana polimérica, se forma una membrana PSS1.
Esta membrana es conductora debido a la sal de LiTFSI y su transparencia medida según el método anteriormente definido es mayor del 80 %.
Ejemplo 2: preparación de una membrana basada en sal fundida de propil-metil-imidazolio
15 gramos de polímero de 4 ramas (Elexcel®-PA-210 de DKS Japón) se mezcla con 100 ppm de un iniciador térmico de tipo Akzo® 16, la mezcla se extiende sobre un soporte de PP de 24 micrómetros de espesor; después se secada a 80 grados centígrados durante una hora.
Se obtiene una película de 25 micrómetros de polímero reticulado. La película de polímero se seca al vacío a 80 grados centígrados durante 24 horas, después se sumerge, durante 5 minutos, en un recipiente de acero inoxidable que contiene una solución de 20 gramos de SS: sal fundida (propilmetilimidazol + LiTFSI 1 M) y del disolvente (GBL: gamma-butirolactona).
El PP se desprende de forma natural de la membrana polimérica, se forma una membrana PSS2. Esta membrana es conductora debido a la sal de LiTFSI y es de tipo transparente.
Su transparencia, medida de acuerdo con el método anteriormente utilizado es superior al 80 %.
Ejemplo 3: preparación de una membrana basada en sal fundida de propil-metil-imidazolio con reticulación por haz de electrones
20 gramos del polímero de 4 ramas (Elexcel®-A210 de DKS Japon) se homogeneizaron, y a continuación se expandieron sobre un soporte de PP pasado por una máquina de haz de electrones durante tres minutos, con una intensidad de 5 Mrad.
Se obtiene una película de 25 micrómetros de polímero reticulado, esta película de polímero se seca al vacío a 80 grados centígrados durante 24 horas, después se sumerge, durante 5 minutos, en un recipiente de acero inoxidable que contiene una solución de mezcla de 20 gramos de SS: sal fundida (propilmetilimidazol + LiTFSI 1 M) y del disolvente (EC + GBL: carbonato de etileno + gamma-butirolactona). La relación entre la sal fundida y el disolvente es de 90: 10 en peso.
El PP se desprende de forma natural de la membrana polimérica, se forma una membrana PSS3. Esta membrana es conductora debido a la sal de LiTFSI y es de tipo transparente. Su transparencia también es superior al 80 % por ciento.
Ejemplo 4: preparación de una membrana salada basada en sal fundida de hexil-metil-imidazolio
15 gramos de polímero de 4 ramas (Elexcel®-A210 de DKS Japon) se mezcla con 4,47 gramos de LiTFSI y 0,15 gramos de foto iniciador de tipo Perkadox®, la mezcla se extiende sobre un soporte de PP.
Tras pasar durante 5 segundos bajo una lámpara UV que libera una energía de 10 mW (colocación a una distancia de 6 pulgadas (15,24 cm) de la lámpara), se obtiene una película de polímero de 23 micrómetros reticulada.
La película de polímero se seca al vacío a 80 grados centígrados durante 24 horas, a continuación, se sumerge, durante 5 minutos, en un recipiente de acero inoxidable en una solución de mezcla de 20 gramos de SS: sal fundida (hexil-metilimidazolio) y disolvente (PC: carbonato de propileno). La relación entre la sal fundida y el disolvente es de
90: 10 en peso.
El PP se desprende de forma natural de la membrana polimérica, se forma una membrana PSS4. Esta membrana es conductora debido a la sal de LiTFSI y tiene alta transparencia, es decir, una medida superior al 80 %.
14
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Claims (1)

  1. imagen1
    imagen2
ES05794996.8T 2004-10-12 2005-10-11 Mezcla ternaria de polímero aprótico - sal fundida -disolvente, procedimiento de fabricación y uso en los sistemas electroquímicos Expired - Lifetime ES2605357T3 (es)

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CA002482003A CA2482003A1 (fr) 2004-10-12 2004-10-12 Melange ternaire polymere - sel fondu - solvant, procede de fabrication et utilisation dans les systemes electrochimiques
CA2482003 2004-10-12
PCT/CA2005/001553 WO2006039795A1 (fr) 2004-10-12 2005-10-11 Melange ternaire polymere aprotique - sel fondu -solvant, procede de fabrication et utilisation dans les systemes electrochimiques

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CN101084276B (zh) 2012-07-04
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US10954351B2 (en) 2021-03-23
JP2008516287A (ja) 2008-05-15
EP1802707B1 (fr) 2016-09-07
JP4870084B2 (ja) 2012-02-08
EP1802707A1 (fr) 2007-07-04
EP1802707A4 (fr) 2013-08-21
US20180155513A1 (en) 2018-06-07
CN101084276A (zh) 2007-12-05
US20090029263A1 (en) 2009-01-29

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