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All-solid battery

A technology of all-solid batteries and solid electrolytes, which is applied in solid electrolytes, secondary batteries, battery electrodes, etc., and can solve the problems of reduced durability of all-solid batteries

Pending Publication Date: 2020-07-07
PANASONIC INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this scheme, cracks that occur due to expansion and contraction accompanying charge and discharge become conspicuous
Therefore, there is a problem that the durability of the all-solid battery decreases

Method used

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Examples

Experimental program
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Effect test

Embodiment approach

[0069] [A. All solid battery]

[0070] figure 1 It is a schematic cross-sectional view showing an example of the all solid state battery in this embodiment. figure 1 The all-solid battery 100 in has a positive electrode layer 20 , a negative electrode layer 30 and a solid electrolyte layer 40 . The positive electrode layer 20 has a positive electrode current collector 11 and a positive electrode mixture layer 12 . The positive electrode mixture layer 12 is formed on the positive electrode current collector 11 and contains at least the positive electrode active material 1 and the solid electrolyte 2 . The negative electrode layer 30 has a negative electrode current collector 13 and a negative electrode mixture layer 14 . The negative electrode mixture layer 14 is formed on the negative electrode current collector 13 and contains at least the negative electrode active material 3 and the solid electrolyte 2 . The solid electrolyte layer 40 is disposed between the positive e...

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Abstract

An all-solid battery includes a positive-electrode layer having a positive-electrode current collector and a positive-electrode mixture layer, a negative-electrode layer having a negative-electrode current collector and a negative-electrode mixture layer, and a solid electrolyte layer. The positive-electrode mixture layer contains a positive-electrode active material and a solid electrolyte. The solid electrolyte layer is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer. In the positive-electrode mixture layer, the active material volume proportionis larger and the porosity is smaller in a portion closer to the positive-electrode current collector than in a portion far from the positive-electrode current collector.

Description

technical field [0001] The present application relates to a positive electrode layer, a negative electrode layer, a solid electrolyte layer, and an all-solid battery using the same. Background technique [0002] In recent years, the development of reusable secondary batteries has been demanded due to the reduction in weight and cordlessness of electronic devices such as personal computers and mobile phones. As the secondary battery, there are nickel-cadmium batteries, nickel-hydrogen batteries, lead storage batteries, lithium ion batteries, and the like. Among these, lithium-ion batteries have attracted attention due to features such as light weight, high voltage, and high energy density. [0003] A lithium-ion battery consists of a positive electrode layer, a negative electrode layer, and an electrolyte arranged between them. As the electrolyte, for example, an electrolytic solution or a solid electrolyte obtained by dissolving a supporting salt such as lithium hexafluoro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/0562
CPCH01M10/0525H01M10/0562H01M2300/0071H01M2300/0065H01M10/0585H01M10/0413H01M10/0436Y02E60/10Y02P70/50H01M4/13H01M4/366H01M2004/021H01M2004/028
Inventor 堀川晃宏宫武和史大河内基裕
Owner PANASONIC INTPROP MANAGEMENT CO LTD
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