LAMINATE TYPE ALL-SOLID BATTERY AND MANUFACTURING METHOD THEREOF

• Main Authors: HASEGAWA KENTA, KUROMIYA TAKAO
• Format: Patent
• Language: English; Japanese
• Published: 15.11.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a laminate type all-solid battery having a high battery performance (e.g. output and cycle life characteristics), and a method for manufacturing the laminate type all-solid battery.SOLUTION: A laminate type all-solid battery 200 is arranged by laminating a plurality of all-solid batteries 100 each comprising: a positive electrode layer 10 having a positive electrode current collector 11, and a positive electrode active material layer 13 formed on the positive electrode current collector 11 and including a positive electrode active material 12; a negative electrode layer 20 having a negative electrode current collector 21, and a negative electrode active material layer 23 formed on the negative electrode current collector 21 and including a negative electrode active material 22; and a solid electrolyte layer 30 disposed between the positive electrode active material layer 13 and the negative electrode active material layer 23, and including a solid electrolyte 31 having lithium ion conductivity. As to two adjacent all-solid batteries 100a and 100b of the plurality of all-solid batteries 100a to 100f, the positive electrode current collector 11 of one all-solid battery 100b is directly joined to the negative electrode current collector 21 of the other all-solid battery 100a. The laminate type all-solid battery has a cavity 40 at a joining interface between the one all-solid battery 100b and the other all-solid battery 100a.SELECTED DRAWING: Figure 1 【課題】高い電池性能（例えば、出力特性、サイクル寿命特性）を有する積層型全固体電池およびその製造方法を提供する。【解決手段】積層型全固体電池２００は、正極集電体１１および正極集電体１１上に形成された正極活物質１２を含む正極活物質層１３を有する正極層１０と、負極集電体２１および負極集電体２１上に形成された負極活物質２２を含む負極活物質層２３を有する負極層２０と、正極活物質層１３および負極活物質層２３の間に配置され、リチウムイオン伝導性を有する固体電解質３１を含む固体電解質層３０とを備える全固体電池１００が複数個積層され、複数の全固体電池１００ａ〜１００ｆのうち互いに隣接する２つの全固体電池１００ａ、１００ｂは、一方の全固体電池１００ｂの正極集電体１１と他方の全固体電池１００ａの負極集電体２１とが直接接合され、一方の全固体電池１００ｂおよび他方の全固体電池１００ａの接合界面に空隙４０を有する。【選択図】図１