Electrode stack, method for manufacturing the same, and all-solid-state secondary battery
JP7893870B2Active Publication Date: 2026-07-22MAXELL LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- MAXELL LTD
- Filing Date
- 2023-06-09
- Publication Date
- 2026-07-22
AI Technical Summary
Technical Problem
Existing all-solid-state batteries face issues with insufficient conductive connection between the electrode and the conductive path due to vibration or volume change during charge and discharge, leading to increased internal resistance.
Method used
An electrode laminate comprising a first and second electrode with a sheet-like porous metal substrate embedded in the electrode mixture layer and exposed on the surface, ensuring good conductivity between the electrodes and the conductive path.
Benefits of technology
The electrode laminate reduces internal resistance and improves the characteristics of electrochemical elements by enhancing electrical conductivity.
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Abstract
The present invention provides: an electrode stack which can be used for assembly of an electrochemical element, while being capable of having a reduced internal resistance; a method for producing this electrode stack; and an electrochemical element which uses this electrode stack. An electrode stack according to the present invention comprises a first electrode, a second electrode, and a separation layer that is interposed therebetween; at least one of the first electrode and the second electrode comprises an electrode mixture layer and a sheet-like porous metal base material; the porous metal base material is integrated with the electrode mixture layer by having at least a part thereof including the electrode mixture layer-side end embedded in the superficial part of the electrode mixture layer; and the other end of the porous metal base material is exposed in the surface of the electrode. An electrochemical element according to the present invention comprises an outer case which has a conduction path that leads to the outside, and an electrode stack according to the present invention; and a porous metal base material in the surface of an electrode of this electrode stack is brought into contact with the conduction path so that the electrode and the conduction path are electrically connected to each other.
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Citation Information
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