Nonaqueous electrolyte battery and battery pack
AssigneeKabushiki Kaisha Toshiba
InventorsHiromichi KURIYAMA, Hikaru YOSHIKAWA, Hidesato SARUWATARI, Yasuaki MURASHI, Dai YAMAMOTO, Naoki NISHIO
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Abstract
The nonaqueous electrolyte battery according to one embodiment includes a positive electrode and a negative electrode. The positive electrode contains a positive electrode active material containing manganese-containing composite oxide. The negative electrode contains a negative electrode active material selected from the group consisting of titanium oxide and titanium-containing composite oxide. A ratio p/n of a capacity p per unit area of the positive electrode to a capacity n per unit area of the negative electrode is in the range of 0.8 or more and 1 or less.
Claims10
A nonaqueous electrolyte battery comprising:
- a positive electrode comprising a positive electrode active material comprising manganese-containing composite oxide having a spinel-type crystal structure and represented by a general formula of Li1−aMn2−xMxO4 (wherein, M is at least one element selected from Mg, Ti, Cr, Fe, Co, Zn, Al, and Ga, a subscript a is within a range of −1 or more and 1 or less, and a subscript x is within a range of 0.22 or more and 0.7 or less);
- a negative electrode containing a negative electrode active material selected from the group consisting of titanium oxide and titanium-containing composite oxide;
- and
- a nonaqueous electrolyte, wherein
- a ratio p/n of a capacity p per unit area of the positive electrode to a capacity n per unit area of the negative electrode is within a range of 0.8 or more and 1 or less.
Dependencies are inferred from the claim text.