NONAQUEOUS ELECTROLYTE BATTERY, AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: HATAKEYAMA ATSUSHI, ISHII EIKO
• Format: Patent
• Language: English; Japanese
• Published: 26.10.2017
• 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 nonaqueous electrolyte battery which can be charged repeatedly and which has good storage suitability under a high-temperature environment; and a method for manufacturing the nonaqueous electrolyte battery.SOLUTION: A nonaqueous electrolyte battery according to the present invention comprises: a flat plate like electrode body arranged by putting together positive and negative electrodes with a separator interposed therebetween; and a nonaqueous electrolyte solution. The negative electrode is composed of a laminate including a metal base layer of a metal unalloyable with Li, and an Al active layer joined to the base layer of the metal, in which a Li-Al alloy is produced at least on the side of a face of the Al active layer opposed to the positive electrode. The Al active layer in the laminate is formed by the Li-Al alloy production at least on the side of the face of the Al metal layer of a piece of laminate metal foil opposed to the positive electrode, provided that the piece of laminate metal foil is arranged by joining the Al metal layer to the metal base layer of the metal unalloyable with Li and is 35 (Hv) or more in Vickers hardness measured on the side of the Al metal layer.SELECTED DRAWING: Figure 1 【課題】 繰り返しの充電が可能であり、かつ高温環境下での貯蔵特性が良好な非水電解液電池と、その製造方法とを提供する。【解決手段】 本発明の非水電解液電池は、正極と負極とがセパレータを介して重ねられた平板状の電極体と、非水電解液とを有する非水電解液電池であって、前記負極は、Ｌｉと合金化しない金属基材層と、前記金属基材層に接合されたＡｌ活性層とを含有する積層体であり、前記Ａｌ活性層の少なくとも前記正極と対向する面側にはＬｉ−Ａｌ合金が生成しており、前記積層体における前記Ａｌ活性層は、Ｌｉと合金化しない金属基材層にＡｌ金属層が接合されており、かつ前記Ａｌ金属層側で測定されるビッカース硬さが３５（Ｈｖ）以上の積層金属箔の、前記Ａｌ金属層の少なくとも前記正極と対向する面側にＬｉ−Ａｌ合金が生成することで形成されていることを特徴とするものである。【選択図】 図１