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Thin film solid lithium ion secondary battery and manufacturing method thereof

A secondary battery, solid-state lithium technology, applied in the field of lithium-ion batteries, can solve the problems of reduced activity, deterioration of battery characteristics, durability problems, etc., to achieve stable driving, and improve the effect of repeated charge and discharge characteristics and durability.

Active Publication Date: 2011-12-28
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, in the case where Li is deposited on the metal surface on the negative electrode side, Li grows in the form of needles, activity decreases, battery characteristics deteriorate rapidly, and there are problems with durability

Method used

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  • Thin film solid lithium ion secondary battery and manufacturing method thereof
  • Thin film solid lithium ion secondary battery and manufacturing method thereof
  • Thin film solid lithium ion secondary battery and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach (1

[0095] figure 1 It is a view explaining a schematic structure of a solid-state lithium ion battery in an embodiment of the present invention. figure 1 (A) is a floor plan, figure 1 (B) is the X-X cross-sectional view, figure 1 (C) is a Y-Y cross-sectional view.

[0096] Such as figure 1 As shown, the solid state lithium ion battery has a positive electrode side current collector film 30, a positive electrode active material film 40, a solid electrolyte film 50, a negative electrode potential forming layer 64, and a negative electrode side current collector film 70 are sequentially formed on a substrate (organic insulating Substrate) 10 laminated body. An overall protective film 80 made of, for example, an ultraviolet curable resin is formed to cover the entire laminate.

[0097] figure 1 The battery membrane structure shown in is the substrate / positive electrode side current collector film / positive electrode active material film / solid electrolyte membrane / negative electrode p...

Embodiment approach (2

[0101] figure 2 It is a view explaining a schematic structure of a solid-state lithium ion battery in an embodiment of the present invention. figure 2 (A) is a floor plan, figure 2 (B) is an X-X cross-sectional view.

[0102] figure 2 It is a view explaining a schematic structure of a solid-state lithium ion battery in the embodiment (2) of the present invention. figure 2 (A) is a floor plan, figure 2 (B) is an X-X cross-sectional view.

[0103] Such as figure 2 As shown, the solid-state lithium ion battery includes a laminate formed on a substrate (organic insulating substrate) 10 consisting of a positive electrode side current collector film 30 and a positive electrode active material film 40, and a negative electrode side current collector film 70 and a negative electrode potential. Layer 64 is a laminate. The solid electrolyte film 50 is formed to entirely cover the above-mentioned two laminates arranged in a straight line on the substrate (organic insulating substrate) ...

Embodiment approach (3

[0107] image 3 It is a view explaining a schematic structure of a solid-state lithium ion battery in an embodiment of the present invention. image 3 (A) is a floor plan, image 3 (B) is the X-X cross-sectional view, image 3 (C) is a Y-Y cross-sectional view.

[0108] Such as image 3 As shown, the solid-state lithium ion battery has an inorganic insulating film 20 formed on the surface of a substrate (organic insulating substrate) 10. The solid state lithium ion battery has a stack in which a positive electrode side current collector film 30, a positive electrode active material film 40, a solid electrolyte film 50, a negative electrode potential forming layer 64, and a negative electrode side current collector film 70 are sequentially formed on the inorganic insulating film 20 body. An overall protective film 80 made of, for example, an ultraviolet curable resin is formed to entirely cover the laminate and the inorganic insulating film 20.

[0109] image 3 The battery film st...

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Abstract

Disclosed are a high-performance, inexpensive solid state thin film lithium ion secondary battery that is able to be charged and discharged in the atmosphere and can be manufactured at good yield, and a manufacturing method therefor. A solid state thin film lithium ion secondary battery comprises an electrically insulating substrate (10) of an organic resin, an inorganic insulating film that is disposed on the surface of this substrate, a cathode side collector film (30), a cathode active material film (40), a solid state electrolyte film (50), an anode potential formation layer (64), and an anode side collector film (70), which cathode side collector film and / or anode side collector film is / are formed on the surface of the inorganic insulating film, wherein the anode potential formation layer is formed from a cathode active material that is the same or different from the cathode active material film, and is a layer that is provided to form an anode potential during discharging. The thickness of the aforementioned anode potential formation layer is 2 nm or greater and 20 nm or less, and the inorganic insulating film is not less than 5 nm and not more than 500 nm thick and contains at least one of either an oxide or nitride or sulfide containing any of Si, Al, Cr, Zr, Ta, Ti, Mn, Mg, or Zn.

Description

Technical field [0001] The present invention relates to a lithium ion battery, in particular to a thin film solid state lithium ion secondary battery, in which all layers formed on a substrate and constituting the battery can be formed by a dry process, and to a manufacturing method thereof. Background technique [0002] Compared with other secondary batteries, lithium ion secondary batteries have higher energy density and better charge-discharge cycle characteristics, so lithium ion secondary batteries are widely used as power sources for mobile electronic devices. In a lithium ion secondary battery using an electrolyte solution as an electrolyte, reduction in its size and thickness is limited. Therefore, polymer batteries using gel electrolytes and thin-film solid-state batteries using solid electrolytes have been developed. [0003] In polymer batteries using gel electrolytes, the reduction in size and thickness is easier to achieve than batteries using electrolyte solutions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0585H01M4/13H01M4/131H01M4/66H01M10/052H01M10/0562
CPCH01M10/0585H01M4/1397H01M4/131H01M2/0212Y02E60/122H01M4/136H01M6/40H01M4/1391H01M10/0562H01M10/0525Y10T29/49115Y10T29/49108Y02E60/10Y02P70/50H01M4/66H01M10/058H01M4/505H01M10/05H01M10/054H01M10/126
Inventor 猿飞裕一高原克典守冈宏之古谷龙也日隈弘一郎市川玲奈仙田结足立百惠
Owner MURATA MFG CO LTD
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