Secondary battery
AssigneeLG Energy Solution, Ltd.
InventorsYoung Jae Kim, Jung Woo Yoo
Life of this patent
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Abstract
Provided is a secondary battery which includes: one or more positive electrodes including a positive electrode active material layer; a plurality of negative electrodes including a first negative electrode including a silicon-based active material and a second negative electrode including a carbon-based active material; a separator; and an electrolyte, wherein the positive electrode and the negative electrode are alternately stacked with the separators interposed therebetween, and the ratio of weight of the silicon-based active material included in the first negative electrode and weight of the carbon-based active material included in the second negative electrode is in the range of 40:60 to 90:10.
Claims15
A secondary battery comprising:
- one or more positive electrodes including a positive electrode active material layer;
- a plurality of negative electrodes including:
- a first negative electrode including a silicon-based active material, and
- a second negative electrode including a carbon-based active material,
- wherein the first negative electrode does not include the carbon-based active material,
- wherein the second negative electrode does not include the silicon-based active material;
- separators;
- and
- an electrolyte,
- wherein one or more positive electrodes and the first or second negative electrode are alternately stacked with the separators interposed therebetween, and
- a weight ratio of a total weight of the silicon-based active material of the first negative electrode to a total weight of the carbon-based active material of the second negative electrode in the plurality of negative electrodes is in a range of 49.2:50.8 to 90:10.
Dependencies are inferred from the claim text.