Electrode composite body, method of manufacturing electrode composite body, and lithium battery

Inactive Publication Date: 2016-12-08
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent discusses a new type of electrode that can be used in lithium batteries. When used in these batteries, the electrode can have a consistent charge and discharge cycle, which means it can be used for a long time without losing its effectiveness. This invention also includes a method for making the electrode and a battery that uses the new electrode.

Problems solved by technology

Additional high output and high capacity are demanded for the all-solid type lithium battery, but it cannot be said that these characteristics are sufficiently obtained in the all-solid type lithium battery of the related art.

Method used

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  • Electrode composite body, method of manufacturing electrode composite body, and lithium battery
  • Electrode composite body, method of manufacturing electrode composite body, and lithium battery
  • Electrode composite body, method of manufacturing electrode composite body, and lithium battery

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Experimental program
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first embodiment

[0040]In this embodiment, description will be given of an electrode composite body, a method of manufacturing the electrode composite body, and a lithium battery according to the invention.

[0041]First, a lithium secondary battery 100, to which the lithium battery according to the invention is applied, will be described. FIG. 1 is a longitudinal cross-sectional view of the lithium secondary battery 100.

[0042]The lithium secondary battery 100 includes a stacked body 10, and an electrode 20 that is joined to the stacked body 10. The lithium secondary battery 100 is a so-called all-solid type lithium (ion) secondary battery.

[0043]The stacked body 10 includes a current collector 1, an active material molded body 2, a first solid electrolyte layer 3, and a second solid electrolyte layer 5. In addition, in the following description, a configuration provided with the active material molded body 2, the first solid electrolyte layer 3, and the second solid electrolyte layer 5 is referred to a...

second embodiment

[0210]In this embodiment, description will be given of a lithium secondary battery having a structure different from that of the first embodiment. In addition, in the following embodiments including this embodiment, the same reference numerals will be given to the same constituent elements as the constituent elements in the first embodiment, and description thereof may not be repeated.

[0211]FIG. 9 is a longitudinal cross-sectional view of a lithium secondary battery according to a second embodiment.

[0212]In a lithium secondary battery 100A, a third solid electrolyte layer 6 is provided between the electrode composite body 4 and the electrode 20.

[0213]The third solid electrolyte layer 6, which is constituted by a third inorganic solid electrolyte and is formed through a vapor phase film formation, is formed between the electrode composite body 4 and the electrode 20.

[0214]When the third solid electrolyte layer 6 is provided, it is possible to prevent the current collector 1 and the e...

third embodiment

[0224]In this embodiment, description will be given of a lithium secondary battery having a structure different from that of the first embodiment and the second embodiment.

[0225]FIG. 10 is a longitudinal cross-sectional view of a lithium secondary battery according to a third embodiment.

[0226]In a lithium secondary battery 100B, an electrode composite body 4B having a configuration different from that of the electrode composite body 4 is provided between the current collector 1 and the electrode 20 to come into contact with the current collector 1 and the electrode 20.

[0227]The electrode composite body 4B includes an active material molded body 2B including the active material particles 21 and noble metal particles 22, the first solid electrolyte layer 3, and the second solid electrolyte layer 5.

[0228]In other words, the electrode composite body 4B includes the active material molded body 2B, which includes the active material particles 21 and the noble metal particles 22 which incl...

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PUM

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Abstract

An electrode composite body includes: an active material molded body including active material particles which include a lithium composite oxide and have a particle shape, and a communication hole that is provided between the active material particles; a first solid electrolyte layer that is provided on a surface of the active material molded body, and includes a first inorganic solid electrolyte; and a second solid electrolyte layer that is provided on the surface of the active material molded body, and includes a second inorganic solid electrolyte of which a composition is different from a composition of the first inorganic solid electrolyte, and which contains boron as a constituent element and is amorphous.

Description

[0001]This application claims a priority to Japanese Patent Application No. 2015-115508 filed on Jun. 8, 2015 which is hereby expressly incorporated by reference in its entirety.BACKGROUND[0002]1. Technical Field[0003]Several aspects of the present invention relate to an electrode composite body, a method of manufacturing the electrode composite body, and a lithium battery.[0004]2. Background Art[0005]As a power supply of various electrical apparatuses including a portable information apparatus, a battery such as a lithium battery (including a primary battery and a secondary battery) has been used. The lithium battery includes a positive electrode, a negative electrode, and an electrolyte layer that is provided between layers of the positive electrode and the negative electrode and mediates lithium ion conduction therebetween.[0006]Recently, as a lithium battery in which a high energy density and stability are compatible with each other, there is suggested an all-solid type lithium ...

Claims

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Application Information

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IPC IPC(8): H01M10/0562H01M10/0525H01M4/36H01M4/04
CPCH01M10/0562H01M4/0483H01M2300/0071H01M4/366H01M10/0525H01M4/131H01M4/525H01M10/052H01M2300/0085H01M4/1391Y02E60/10
Inventor TERAOKA, TSUTOMUYOKOYAMA, TOMOFUMIYAMAMOTO, HITOSHI
Owner SEIKO EPSON CORP
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