US Patent Application 18031387. Lithium Secondary Battery and Method of Manufacturing the Same simplified abstract

Lithium Secondary Battery and Method of Manufacturing the Same

Organization Name

LG ENERGY SOLUTION, LTD.

Inventor(s)

Chi Ho Jo of Daejeon (KR)

Wang Mo Jung of Daejeon (KR)

Hye Hyeon Kim of Daejeon (KR)

Tae Gu Yoo of Daejeon (KR)

Jin Tae Hwang of Daejeon (KR)

Hae Jung Jung of Daejeon (KR)

Jong Wook Heo of Daejeon (KR)

Lithium Secondary Battery and Method of Manufacturing the Same - A simplified explanation of the abstract

This abstract first appeared for US patent application 18031387 titled 'Lithium Secondary Battery and Method of Manufacturing the Same

Simplified Explanation

The patent application describes a lithium secondary battery and a method of manufacturing it.

• The battery includes a positive electrode additive that reduces the amount of oxygen gas generated during charging/discharging.
• The ratio of initial charge capacity to initial discharge capacity is adjusted within a specific range to improve battery performance.
• The battery inhibits self-discharging and improves operating voltage by enhancing the open circuit voltage during initial activation and high-temperature storage.
• This lithium secondary battery is suitable for use as a power source for mid-to-large devices like electric vehicles.

Original Abstract Submitted

A lithium secondary battery and a method of manufacturing the lithium secondary battery are provided. In the lithium secondary battery, a positive electrode additive represented by Formula 1 as an irreversible additive is included in a positive electrode mixture layer, and a ratio (CC/DC) of an initial charge capacity (CC) to an initial discharge capacity (DC) is adjusted within a specific range, thereby reducing the amount of oxygen gas generated in the charging/discharging of the lithium secondary battery, and at the same time, inhibiting self-discharging and improving an operating voltage by improving the open circuit voltage of the battery in initial activation and/or subsequent high-temperature storage. The lithium secondary battery including the same can be effectively used as a power source for mid-to-large devices such as electric vehicles.