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Solid electrolyte sheet, method for manufacturing same, and sodium ion all-solid-state secondary cell

A technology of solid electrolyte and manufacturing method, which is applied in secondary battery, electrolyte, cable/conductor manufacturing, etc., and can solve problems such as the skyrocketing price of lithium raw materials

Active Publication Date: 2018-03-27
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, there are concerns about a worldwide surge in raw material prices for lithium

Method used

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  • Solid electrolyte sheet, method for manufacturing same, and sodium ion all-solid-state secondary cell
  • Solid electrolyte sheet, method for manufacturing same, and sodium ion all-solid-state secondary cell
  • Solid electrolyte sheet, method for manufacturing same, and sodium ion all-solid-state secondary cell

Examples

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Embodiment

[0065] Hereinafter, the present invention will be described in detail based on examples, but the present invention is not limited to these examples.

[0066] Tables 1 to 3 show examples (No. 1 to 10) and comparative examples (No. 11 to 15).

[0067] [Table 1]

[0068]

[0069] [Table 2]

[0070]

[0071] [table 3]

[0072]

[0073] (a) Preparation of slurry

[0074] Sodium carbonate (Na 2 CO 3 ), sodium bicarbonate (NaHCO 3 ), magnesium oxide (MgO), aluminum oxide (Al 2 o 3 ), zirconia (ZrO 2 ), yttrium oxide (Y 2 o 3 ) to prepare the raw material powder so that it becomes the composition described in Tables 1-3. Using ethanol as the medium, the raw material powders were wet mixed for 4 hours. After evaporating ethanol, use an acrylate copolymer (OLYCOX1700 manufactured by Kyoeisha Chemical Co., Ltd.) as a binder, and use butyl benzyl phthalate as a plasticizer so that the raw material powder: binder: plasticizer = 83.5:15:1.5 (mass ratio) is weighed to d...

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Abstract

Provided is a thin-profile beta-alumina-based solid electrolyte sheet having a high ion conduction value. The solid electrolyte sheet is characterized in containing Beta-alumina and / or Beta-alumina, measuring 1 mm or less in thickness, and having a void content of 20% or less.

Description

technical field [0001] The present invention relates to a β-alumina-based solid electrolyte sheet used in electrical storage devices such as a sodium-ion secondary battery, a method for producing the same, and a sodium-ion all-solid secondary battery. Background technique [0002] Lithium-ion secondary batteries have established themselves as high-capacity and lightweight power sources that are indispensable in mobile devices, electric vehicles, and the like. However, since a flammable organic electrolytic solution is mainly used as an electrolyte in a current lithium ion secondary battery, there is a concern about danger such as ignition. As a method of solving this problem, the development of a lithium-ion all-solid-state battery using a solid electrolyte instead of an organic electrolytic solution has been advanced (for example, refer to Patent Document 1). [0003] However, there is a concern that lithium prices will skyrocket worldwide. Therefore, as a material to rep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562C04B35/113H01B1/06H01B13/00H01M10/054
CPCC04B35/113H01M10/054C04B35/62635C04B35/6264C04B35/63424C04B2235/6025C04B2235/77H01M10/0562C04B35/62218C04B2235/3201C04B2235/3203C04B2235/3206C04B2235/3217C04B2235/3225C04B2235/3244C04B2235/604H01M2300/0071Y02E60/10C04B35/10C04B35/62625C04B35/64
Inventor 池尻纯一山内英郎佐藤史雄
Owner NIPPON ELECTRIC GLASS CO LTD