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AssigneeShowa Denko K.K.
InventorsMasataka Takeuchi, Shuichi Naijo, Takashi Ohkubo, Junji Yotsuyanagi, Motoyuki Hirata
Estimating the term…
A laminate comprising an ion conductive material having excellent ion conductivity at room temperature or at lower temperatures, a small water content, sufficiently high mechanical strength and storage stability to allow for handling the ion conductive material in practice, and a form which is easily integrated into an electrochemical element or electrochemical devices. Also disclosed is a production method thereof, and a method of producing a battery, a capacitor or an electrochemical element or apparatus using the laminate. The laminate comprises an intermediate layer of an ion conductive material having on the upper and lower portions thereof outer layers having an ion conductivity lower than that of the intermediate layer. Furthermore, at least one of the outer layers is a layer comprising a non electron-conductive material.
A laminate comprising Layer B, Layer A and Layer C disposed in this order, wherein Layer A comprises an ion conductive material having a specific resistivity of 106 Ω·cm or less, Layer B and Layer C comprise a material having an ion conductivity lower than that of Layer A, and at least one of Layer B and Layer C comprises a thermoplastic resin or a composition containing a thermoplastic resin and a non electron-conductive material, wherein at least one of said Layer B and Layer C further comprises a thin layer of a metal selected from the group consisting of aluminum, copper, gold, platinum, silver and stainless steel, a metal oxide selected from the group consisting of alumina and silica or a carbon material selected from the group consisting of graphite, diamond and impermeable carbon materials on the surface facing said Layer A.
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Characterised by the properties of the layers: with at least one layer not being coherent before laminating, e.g. made up from granular material…
Physical, chemical or physicochemical properties: electric or magnetic properties
For investigating or analysing gases: composition or fabrication of the solid electrolyte
Electrolytes: solid electrolytes, e.g. gels; Additives therein
Term ended 21 Mar 2017 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a laminate comprising an ion conductive material such as a solid polymer electrolyte or polymer gel electrolyte, and a method for producing an ion conductive laminate. The present invention also relates to a method for producing an electrochemical element and apparatus utilizing the ion conductive laminate.
To cope with the trend towards downsizing or solidification in the field of ionics, a solid electrolyte material has been proposed as a new ion conductive material in place of conventional electrolytic solutions. Investigators have aggressively attempted to apply the electrolyte material to solid primary or secondary batteries, electrolytic capacitors, electrical double layer capacitors, photoelectric cells, solar cells, fuel cells, electrochromic elements, various sensors and antistatic film.
Conventional batteries using an electrolytic solution employ a porous thin film separator impregnated with an electrolytic solution. In this case, the production and processing cost of the porous film is high which in turn increases the cost of conventional batteries. Furthermore, the film is not capable of holding the electrolytic solution. This causes the solution to leak from the battery or causes the electrode substance to elute, thereby giving rise to problems with respect to long-term reliability and safety of the battery.
FIG. 1 is a schematic cross section of the laminate in one example of the present invention.
FIG. 2 is a schematic cross section of the laminate in one example of the present invention.
FIG. 3 is a schematic cross section of the laminate in one example of the present invention.
The symbols used in FIGS. 1 to 15 (letters or numerals) each has the following meaning:
A Layer A: ion conductive material layer
B Layer B: layer comprising a material having an ion conductivity lower than that of Layer A