Solid-state battery

A technology of solid batteries and solid electrolytes, applied in solid electrolytes, lithium batteries, battery electrodes, etc., can solve problems such as electrolyte leakage

Active Publication Date: 2012-07-25
MURATA MFG 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 an electrolytic solution, there are problems such as leakage of the electrolytic solution.

Method used

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Examples

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Embodiment approach 1

[0063] (Embodiment 1-a)

[0064] Such as figure 1 As shown, as a structural example (a) of the solid battery according to Embodiment 1 of the present invention, the solid battery 10 includes a positive electrode layer 11 , a negative electrode layer 12 , and a solid electrolyte layer 13 arranged between the positive electrode layer 11 and the negative electrode layer 12 . LiZr 2 (PO 4 ) 3 Containing layer 14 is provided between negative electrode layer 12 and solid electrolyte layer 13 . Solid electrolyte layer 13 is formed of first solid electrolyte layer 130 . Such as Figure 5 As shown, the first solid electrolyte layer 130 is composed of many solid electrolyte particles 15 . Positive electrode layer 11 or negative electrode layer 12 can be as Figure 7 As shown, it is composed of many electrode active material particles 16, and it can also be as Figure 8 As shown, it consists of a mixture of many solid electrolyte particles 15 and electrode active material particl...

Embodiment approach 1

[0065] (Embodiment 1-b)

[0066] Such as figure 2 As shown, as a structural example (b) of the solid battery according to Embodiment 1 of the present invention, the solid battery 10 includes a positive electrode layer 11 , a negative electrode layer 12 , and a solid electrolyte layer 13 arranged between the positive electrode layer 11 and the negative electrode layer 12 . LiZr 2 (PO 4 ) 3 Containing layer 14 is provided between positive electrode layer 11 and solid electrolyte layer 13 . Solid electrolyte layer 13 is formed of first solid electrolyte layer 130 . Such as Figure 5 As shown, the first solid electrolyte layer 130 is composed of many solid electrolyte particles 15 . Positive electrode layer 11 or negative electrode layer 12 can be as Figure 7 As shown, it is composed of many electrode active material particles 16, and it can also be as Figure 8 As shown, it consists of a mixture of many solid electrolyte particles 15 and electrode active material partic...

Embodiment approach 1

[0067] (Embodiment 1-c)

[0068] Such as image 3 As shown, as a structural example (c) of the solid battery according to Embodiment 1 of the present invention, the solid battery 10 includes a positive electrode layer 11 , a negative electrode layer 12 , and a solid electrolyte layer 13 arranged between the positive electrode layer 11 and the negative electrode layer 12 . The solid electrolyte layer 13 includes a first solid electrolyte layer 130 and two second solid electrolyte layers 131 disposed on both sides of the first solid electrolyte layer 130 . In other words, the second solid electrolyte layer 131 is disposed between at least one of the positive electrode layer 11 and the negative electrode layer 12 and the first solid electrolyte layer 130 . Such as Figure 5As shown, the first solid electrolyte layer 130 is composed of many solid electrolyte particles 15 . Such as Figure 6 As shown, the second solid electrolyte layer 131 is made of many LiZr 2 (PO 4 ) 3 It...

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PUM

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Abstract

Disclosed is a solid-state battery which has excellent stability by comprising a solid electrolyte that has improved reduction resistance. Specifically disclosed is a solid-state battery (10) which comprises a positive electrode layer (11), a negative electrode layer (12) and a solid electrolyte layer (13). The positive electrode layer (11) and the negative electrode layer (12) contain an electrode active material, and the solid electrolyte layer (13) contains a solid electrolyte. An LiZr2(PO4)3-containing layer (14) is provided between the solid electrolyte layer (13) and the positive electrode layer (11) and / or between the solid electrolyte layer (13) and the negative electrode layer (12).

Description

technical field [0001] The present invention relates to solid state batteries. Background technique [0002] In recent years, batteries, particularly secondary batteries, have been used as power sources for portable electronic devices such as mobile phones and portable personal computers. As one example of a secondary battery, a lithium ion secondary battery is known to have a relatively large energy density. In such a secondary battery, a liquid electrolyte (electrolyte solution) such as an organic solvent has conventionally been used as a medium for moving ions. However, secondary batteries using an electrolytic solution have problems such as leakage of the electrolytic solution. For this reason, a solid-state battery using a solid electrolyte and constituting all constituent elements in a solid state is being developed. [0003] As a solid electrolyte used in solid batteries, compounds with a NASICON (nano superionic conductor) type structure are being studied. In com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0585H01M4/36H01M4/48H01M4/485H01M10/052H01M10/0562
CPCH01M10/0562Y02E60/122H01M10/0585H01M4/131H01M10/052H01M2300/0068Y02E60/10Y02P70/50
Inventor 西田邦雄尾内倍太吉冈充林刚司
Owner MURATA MFG CO LTD
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