非水電解液二次電池

Nonaqueous electrolyte secondary battery

Abstract

(57)【要約】 【課題】 本発明は電池特性、特に充放電サイクル特 性、保存特性、さらには安全性に優れた非水電解液二電 池を提供することを目的とする。 【解決手段】 非水電解液二次電池の正極電極に、 (A)リチウム・マンガン複合酸化物と、(B1)比表 面積Xが0.3≦X(m 2 /g)であるリチウム・ニッ ケル複合酸化物とを含ませるか、または(B2)D 50 粒 径が40μm以下であるリチウム・ニッケル複合酸化物 とを含ませる。
PROBLEM TO BE SOLVED: To enhance battery characteristics, especially charge/discharge cycle characteristics, storage characteristics, and safety. SOLUTION: A positive electrode of a nonaqueous electrolyte secondary battery contains (A) a lithium manganese composite oxide and (B1) lithium nickel composite oxide with specific surface area X 0.3≤X (m2/g), preferably X≤3.0 (m2/g) or (B2) a lithium nickel composite oxide with D50 particle size ≤40 μm. COPYRIGHT: (C)2000,JPO

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