Graphite active material, preparation method therefor, and high-capacity secondary battery comprising same for high-speed charging and discharging
AssigneeThe Industry & Academic Cooperation in Chungnam National University (IAC)
InventorsSeung-Wan SONG, Thi Hai Yen TRAN
Life of this patent
Estimating the term…
Abstract
A graphite active material, a method for preparing the same, and a high-capacity secondary battery for high-speed charging including the same are described. The embodiments may improve the high-speed charging performance of a secondary battery and increase the capacity thereof when using a graphite active material having an increased interlayer distance of graphite as an anode material, and may provide a secondary battery that can be mounted on small and medium-sized electronic devices such as portable phones, various electric mobilities including commercial electric vehicles, and energy storage systems (ESS).
Claims19
A graphite active material having an interlayer distance d002 increased by 0.001 Å to 0.003 Å.
A method for preparing a graphite active material, comprising the steps of:
- supporting graphite in an organic solvent;
- low-temperature treating graphite supported in the organic solvent;
- and
- drying low-temperature treated graphite,
- wherein the graphite active material has an interlayer distance d002 increased by 0.001 Å to 0.003 Å.
Dependencies are inferred from the claim text.