Non-aqueous electrolyte secondary battery
First Claim
1. A non-aqueous electrolyte secondary battery including:
- a negative electrode comprising a titanium oxide as a negative electrode active material; and
a positive electrode comprising a positive electrode active material having a layered structure and being represented by the chemical formula Li1±
α
[Me]O2, where 0≦
α
<
0.2, and Me is a transition metal including Ni and at least one selected from the group consisting of Mn, Fe, Co, Ti and Cu, said battery having a designed charge/discharge range of not greater than 2.8 V.
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Accused Products
Abstract
As an alternative technique to lead-acid batteries, the present invention provides an inexpensive 2 V non-aqueous electrolyte secondary battery having excellent cycle life at a high rate by preventing volume change during charge and discharge. The non-aqueous electrolyte secondary battery uses: a positive electrode active material having a layered structure, being represented by chemical formula Li1±α[Me]O2, where 0≦α<0.2, and Me is a transition metal including Ni and at least one selected from the group consisting of Mn, Fe, Co, Ti and Cu, and including elemental nickel and elemental cobalt in substantially the same ratio; and a negative electrode active material including Li4Ti5O12(Li[Li1/3Ti5/3]O4).
158 Citations
18 Claims
-
1. A non-aqueous electrolyte secondary battery including:
-
a negative electrode comprising a titanium oxide as a negative electrode active material; and
a positive electrode comprising a positive electrode active material having a layered structure and being represented by the chemical formula Li1±
α
[Me]O2, where 0≦
α
<
0.2, and Me is a transition metal including Ni and at least one selected from the group consisting of Mn, Fe, Co, Ti and Cu,said battery having a designed charge/discharge range of not greater than 2.8 V. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification