Back to results
US 2017/0373315 A1Published application
Lithium secondary battery
AssigneeSK Innovation Co., Ltd.
InventorsJee Hee LEE, Dock Young YOON, Sang Jin KIM
Life of this patent
Estimating the term…
Abstract
A lithium secondary battery includes a cathode, an anode and a non-aqueous electrolyte. The anode includes an anode active material which includes a natural graphite, an average particle diameter (D50) of the natural graphite being in a range from 9 μm to 14 μm, and an expansion rate of the anode represented is 17% or less.
Claims6
A lithium secondary battery, comprising:
- a cathode;
- an anode;
- and
- a non-aqueous electrolyte,
- wherein the anode comprises an anode active material comprising a natural graphite, and an average particle diameter (D50) of the natural graphite is in a range from 9 μm to 14 μm;
- and
- the anode has an expansion rate of 17% or less, and the expansion rate is represented by Equation 3:
- Expansion rate of the anode (%)=100×(T2−T1)/(T1) [Equation 3]
- wherein, in the Equation 3, T1 denotes a thickness of the anode before charging,
- and T2 denotes a thickness of the anode after charging.
7 more elements
Dependencies are inferred from the claim text.