BATTERY, BATTERY PACK, ELECTRONIC APPARATUS, ELECTRIC VEHICLE, POWER STORAGE DEVICE, AND POWER SYSTEM

PROBLEM TO BE SOLVED: To provide a battery, battery pack, electronic apparatus, electric vehicle, power storage device, and power system that are capable of improving overcharge resistance.SOLUTION: Between an anode active material layer and a separator, an anode side depression impregnation area th...

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Hauptverfasser: MIYAMOTO MASAYASU, HATTA KAZUTO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a battery, battery pack, electronic apparatus, electric vehicle, power storage device, and power system that are capable of improving overcharge resistance.SOLUTION: Between an anode active material layer and a separator, an anode side depression impregnation area that includes arranged electrolytes and solid particles and includes a depression between adjacent anode active material particles positioned on the outermost surface of the anode active material layer is formed. Between a cathode active material layer and a separator, a cathode side depression impregnation area that includes arranged electrolytes and solid particles and includes a depression between adjacent cathode active material particles positioned on the outermost surface of the cathode active material layer is formed. A concentration of solid particles in at least one of the cathode and anode side depression impregnation areas is equal to or higher than 30 vol.%. The electrolytes include a predetermined metal salt.SELECTED DRAWING: Figure 3 【課題】過充電耐性を向上できる電池、電池パック、電子機器、電動車両、蓄電装置および電力システムを提供する。【解決手段】負極活物質層およびセパレータの間には、電解質および固体粒子が配置された、負極活物質層の最表面に位置する隣接負極活物質粒子間の窪みを含む負極側の窪み含浸領域が形成されている。正極活物質層およびセパレータの間には、電解質および固体粒子が配置された、正極活物質層の最表面に位置する隣接正極活物質粒子間の窪みを含む正極側の窪み含浸領域が形成されている。正極側および負極側の窪み含浸領域の少なくとも一方における固体粒子の濃度は、30体積%以上である。電解質は、所定の金属塩を含む。【選択図】図3