NONAQUEOUS ELECTROLYTE RECHARGEABLE BATTERY AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE PLATE OF NONAQUEOUS ELECTROLYTE RECHARGEABLE BATTERY

A nonaqueous electrolyte rechargeable battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolyte. The positive electrode plate includes a positive electrode current collector, a positive electrode mixture layer including positive electrode acti...

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Bibliographische Detailangaben
Hauptverfasser: DEGUCHI, Shotaro, YOSHIKAWA, Kazutaka
Format: Patent
Sprache:eng
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Zusammenfassung:A nonaqueous electrolyte rechargeable battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolyte. The positive electrode plate includes a positive electrode current collector, a positive electrode mixture layer including positive electrode active material particles and a conductor, and an insulative protection layer including insulative particles and a binder. In the insulative protection layer, a value of (the insulative particles)/(the insulative particles+the binder) is between 75 wt % and 85 wt %, inclusive. A single-surface thickness TI of the insulative protection layer is between 3.0 μm and 15 μm, inclusive. A porosity PI of the insulative protection layer is between 42% and 55%, inclusive. A ratio of the single-surface thickness TI to a single-surface thickness TP of the positive electrode mixture layer is between 0.12 and 0.80, inclusive.