Non-aqueous electrolyte secondary cell
First Claim
1. A non-aqueous electrolyte secondary cell comprising:
- a cathode containing a lithium compound as a cathode active material; and
an anode having an anode current collector containing Cu, and a material capable of doping/dedoping lithium as an anode active material; and
a non-aqueous electrolyte;
the cathode active material containing a lithium-nickel composite oxide with a mixture ratio A/(A+B) in the range from 0.2 to 1 wherein A is assumed to be the weight of the lithium-nickel composite oxide and B is assumed to be the total weight of the cathode active material other than the lithium-nickel composite oxide, and the anode active material having a specific surface in the range from 0.05 m2/g to 2 m2/g.
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Accused Products
Abstract
The present invention provides a non-aqueous electrolyte secondary cell including: a lithium-nickel composite oxide as a cathode active material and a material having a specific surface in the range from 0.05 m2/g to 2 m2/g as an anode active material. When A is assumed to be the weight of the lithium-nickel composite oxide and B is assumed to be the weight of the cathode active material other than the lithium-nickel composite oxide, the mixture ratio R expressed A/(A+B) is in the range from 0.2 to 1. This combination of the cathode active material and the anode active material enables to obtain an improved anti-over discharge characteristic even when an anode current collector contains Cu.
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Citations
15 Claims
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1. A non-aqueous electrolyte secondary cell comprising:
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a cathode containing a lithium compound as a cathode active material; and
an anode having an anode current collector containing Cu, and a material capable of doping/dedoping lithium as an anode active material; and
a non-aqueous electrolyte;
the cathode active material containing a lithium-nickel composite oxide with a mixture ratio A/(A+B) in the range from 0.2 to 1 wherein A is assumed to be the weight of the lithium-nickel composite oxide and B is assumed to be the total weight of the cathode active material other than the lithium-nickel composite oxide, and the anode active material having a specific surface in the range from 0.05 m2/g to 2 m2/g. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification