Lg Energy Solution, Ltd.

Lg Chem, Ltd

Byounghyo Jung

Doo Kyung Yang

Seong Ho Lee

Gi Su Park

Hyunsoo Lee

Minchul Jang

Yu Mi Kim

Jong Mo Jung

InSung Uhm

Ilhong Kim

Provided is a positive electrode for secondary battery including:

Positive electrode for secondary battery comprising flake graphite and secondary battery comprising the same

A method for enhancing a lifetime of a lithium secondary battery including manufacturing a battery by injecting an electrolyte liquid to an electrode assembly-embedded battery; and charging and discharging the manufactured battery; and additionally injecting an electrolyte liquid earlier than half a cycle point with respect to the number of charge and discharge cycles reaching discharge capacity of 80% compared to initial capacity is provided.

Method for improving lifespan of lithium secondary battery

A binder for a lithium-sulfur battery, and a positive electrode and a lithium-sulfur battery including the same, and in particular, to a binder for a lithium-sulfur battery including lithium polyacrylate and polyvinyl alcohol. By including two types of specific polymers, the binder for a lithium-sulfur battery is capable of enhancing electrochemical properties and stability of a positive electrode, and thereby enhancing capacity and lifetime properties of a lithium-sulfur battery.

Binder for lithium-sulfur battery, positive electrode comprising same, and lithium-sulfur battery

Growing community of inventors

Daejeon, South Korea

Byounghyo Jung