Negative electrode for rechargeable lithium battery, method of manufacturing same, and rechargeable lithium battery including same
AssigneeSamsung SDI Co., Ltd.
InventorsYoung-Jin Choi, Yong-Chan You, Sang-Hyuck Ahn, Su-Kyung Lee, Deok-Hyun Kim, Xianhui Meng, Sang-Pil Kim
Life of this patent
Estimating the term…
Abstract
Disclosed are a negative electrode for a rechargeable lithium battery that includes a plurality of non-sheet-shaped graphite particles, at least one silicon-based particle in a void formed by assembling the non-sheet-shaped graphite particles, and a sheet-shaped graphite powder between the non-sheet-shaped graphite particles, the void, or both thereof, wherein a size of the silicon particle is smaller than a length of the longest axis of the sheet-shaped graphite powder.
Claims20
A negative electrode for a rechargeable lithium battery, comprising
- an assembly of non-sheet-shaped graphite particles, at least one silicon-based particle in a region formed between the non-sheet-shaped graphite particles and at least one sheet-shaped graphite powder particle between the non-sheet-shaped graphite particles contacting at least one non-sheet-shaped graphite particle and at least one silicon-based particle,
- wherein a size of the at least one silicon particle is smaller than a length of the longest axis of the at least one sheet-shaped graphite powder particle.
A method of manufacturing a negative electrode for a rechargeable lithium battery, comprising
- adding at least one non-sheet-shaped graphite particle, at least one silicon-based particle, and a sheet-shaped graphite powder to an aqueous binder solution to prepare a composition, wherein a size of the at least one silicon particle is smaller than the length of the longest axis of the sheet-shaped graphite powder, and
- applying the composition on a current collector followed by drying and compressing the the composition applied on the current collector to manufacture a negative electrode.
Dependencies are inferred from the claim text.