18703230. CYLINDRICAL SECONDARY BATTERY (LG Energy Solution, Ltd.)
Contents
CYLINDRICAL SECONDARY BATTERY
Organization Name
Inventor(s)
CYLINDRICAL SECONDARY BATTERY
This abstract first appeared for US patent application 18703230 titled 'CYLINDRICAL SECONDARY BATTERY
Original Abstract Submitted
A secondary battery including an electrode assembly having a jelly-roll shape, a positive electrode, and a negative electrode including a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer includes a first region in contact with the negative electrode current collector including a silicon-containing compound and natural graphite as an active material, a mixed region in contact with the first region including a silicon-containing compound, natural graphite and artificial graphite as an active material, and a second region in contact with the mixed region including a silicon-containing compound and artificial graphite as an active material. The secondary battery has a high form factor applied to medium and large scale devices and may be a cylindrical secondary battery with improved fast charging characteristics, reduced swelling, suppressed lithium plating and high capacity characteristics.
