Kabushiki Kaisha Toshiba

Toshiba Infrastructure Systems & Solutions Corporation

Genki Yamagishi

Hiroshi Watanabe

Hidesato Saruwatari

Dai Yamamoto

Tatsuya Shinoda

Nobuyasu Negishi

Masataka Shikota

According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a positive electrode active material containing LiNiCoMnMO(0.9&#x3c;x&#x2264;1.25, 0&#x3c;a&#x2264;0.4, 0&#x2264;b&#x2264;0.45, 0&#x2264;c&#x2264;0.1, and M represents at least one element selected from the group consisting of Mg, Al, Si, Ti, Zn, Zr, Ca, and Sn). The separator includes polyester. A pore volume in a pore size distribution according to a mercury intrusion porosimetry is in a range of 0.9 cm/g to 3 cm/g. An air permeability value according to a Gurley method is in a range of 2 sec/100 ml to 15 sec/100 ml.

Nonaqueous electrolyte battery, battery pack and positive electrode

According to an embodiment, a nonaqueous electrolyte battery including an electrode group and a nonaqueous electrolyte is provided. The electrode group is formed by winding a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode. The tension modulus of the separator in the winding direction is within a range of 200 (N/mm) to 2,000 (N/mm).

Nonaqueous electrolyte battery and battery pack

Growing community of inventors

Kashiwazaki, Japan

Genki Yamagishi