Negative electrode, secondary battery, and solid-state secondary battery

A negative electrode and negative active material technology, applied in the fields of machines, processes, products or compositions, can solve problems such as operating temperature range, fire, liquid leakage, etc.

Pending Publication Date: 2022-03-18
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a secondary battery using a liquid (hereinafter also referred to as an electrolyte solution) as an electrolyte, there are problems in that the liquid is used: a temperature range of use; a decomposition reaction of the electrolyte solution according to a use potential; Leakage from the outside of the battery
In addition, secondary batteries using liquid as an electrolyte have a risk of fire due to liquid leakage

Method used

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  • Negative electrode, secondary battery, and solid-state secondary battery
  • Negative electrode, secondary battery, and solid-state secondary battery
  • Negative electrode, secondary battery, and solid-state secondary battery

Examples

Experimental program
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Effect test

Embodiment approach 1

[0058] Refer Figure 1A , Figure 2A and Figure 2b A negative electrode and a secondary battery will be described in the present invention. In the present specification, the negative electrode includes at least a negative electrode fluid and an anode active material layer.

[0059] exist Figure 1A In the secondary battery 150 shown in one embodiment of the present invention, a negative electrode concentration fluid layer 200, a negative electrode active material layer 201, a solid electrolyte layer 202, a positive electrode active material layer 203 are sequentially laminated, and the positive electrode fluid layer 205 is laminated. . Note that the laminate sequence can also be reversed. That is, the positive electrode collector layer 205, the positive electrode active material layer 203, the solid electrolyte layer 202, the negative electrode active material layer 201, and the negative electrode concentration fluid layer 200 are sequentially laminated on the substrate 101.

[0060]...

Embodiment approach 2

[0099] In the present embodiment, a method of manufacturing a solid secondary battery in the first embodiment will be described. in addition, Figure 5 Show it Figure 4A and Figure 4b An example of a manufacturing process of the structure shown.

[0100] First, the negative electrode concentration fluid layer 200 is formed on the substrate. As a deposition method, a sputtering method, a vapor deposition method, and the like can be used. Alternatively, a substrate having conductivity can be used as a concentration fluid. The above materials can be used as the negative electrode current fluid layer. The thickness of the negative electrode concentration fluid layer 200 is preferably 5 μm or more and 100 μm or less, preferably 5 μm or more and 30 μm.

[0101] The first layer of negative active material layer 201 (a) is then deposited. Note that the first layer negative electrode active material layer 201 (1) is shown in the drawings. The negative electrode active material layer 201 (a)...

Embodiment approach 3

[0115] In the present embodiment, an example of a material that can be used to include a secondary battery of the present invention will be described. In the present embodiment, the negative electrode and the electrolyte of the present invention are described as an example in the secondary battery surrounded by the positive electrode.

[0116] [positive electrode]

[0117] The positive electrode includes a positive electrode active material layer and a positive electrode concentration fluid layer.

[0118]

[0119] The positive electrode active material layer can include a positive electrode active material film or a positive electrode active material particle. In the case of including a positive electrode active material film, a thin film battery can be formed by a combination of a negative electrode according to the present invention, which is preferred. On the other hand, by including a positive electrode active material particles, a large capacity of the positive electrode ca...

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Abstract

One embodiment of the present invention provides a solid-state secondary battery having high cycle characteristics, reliability, or safety. The negative electrode includes n (n is an integer of 2 or more) negative electrode active material layers and (n-1) separation layers on a negative electrode current collector, the negative electrode active material layers and the separation layers are alternately laminated, the thickness of the negative electrode active material is 20-100 nm, and the separation layers contain titanium. The separation layer preferably contains titanium (Ti), titanium nitride (TiN) or titanium oxynitride (TiOxNy, 0lt; xlt; 2, 0lt; yt; Yt; 1). By using the negative electrode having such a structure, expansion of each layer of the negative electrode active material layer can be reduced. Consequently, a negative electrode having a large capacity and less susceptible to cracking or collapse can be formed.

Description

Technical field [0001] One manner of the present invention relates to an article, a method, or a method of manufacturing the invention. Additionally, the present invention relates to a process, a machine, a machine, or a Composition of Matter. One embodiment of the invention relates to a semiconductor device, a display device, a light-emitting device, a power storage device, a lighting device, or an electronic device and a method of manufacturing the same. [0002] Note that in this specification, the electronic device refers to all devices having a power storage device, an electro-optical device having a power storage device, an information terminal device having a power storage device, and the like are electronic devices. Background technique [0003] In recent years, research and development of various power storage devices such as lithium-ion secondary batteries, lithium ion capacitors, air batteries and full solid state batteries are increasingly hot. In particular, the dema...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/134H01M4/1395H01M4/36H01M4/38H01M4/62H01M10/0525
CPCH01M4/134H01M4/1395H01M4/366H01M4/386H01M4/62H01M10/0525H01M2004/027C01B33/02H01M4/38H01M4/628H01M10/0562H01M2300/0068H01M4/0404H01M2300/0065Y02E60/10
Inventor 栗城和贵米田祐美子门间裕史荻田香山崎舜平
Owner SEMICON ENERGY LAB CO LTD
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