Lg Energy Solution, Ltd.

Sun-Kyu Kim

Seok-Koo Kim

Yeon-Suk Hong

Joon Kwon

Ji-Won Min

Ju-Ri Kim

Kyung-Eun Sun

A battery module improves performance of secondary batteries through effective thermal control. The battery module includes at least one secondary battery, a module case having an empty space formed therein to accommodate the at least one secondary battery in the inner space and at least one heat pressure exchange member disposed to face the secondary battery in the inner space of the module case. The at least one heat pressure exchange member is configured to absorb and retain heat when a pressure applied from the secondary battery is equal to or less than a reference value and release the retained heat when the pressure applied from the secondary battery is higher than the reference value.

Battery module having pressure dependent heat exchange members

Disclosed is a negative electrode including: a current collector; a negative electrode active material layer disposed on at least one surface of the current collector, including a silicon-based active material and a conductive material, and containing no binder polymer; and a coating layer disposed on the surface of the negative electrode active material layer and in at least a part of the inside of the pores of the negative electrode active material layer, and containing a coating layer polymer forming a chemical bond with silicon (Si) of the silicon-based active material, wherein the content of the coating layer polymer is 0.3-2 parts by weight based on 100 parts by weight of the negative electrode active material layer, and the coating layer polymer is a mixture of polyacrylic acid with polyvinyl alcohol.

Negative electrode and lithium secondary battery including the same

An electrode including a lithium diffusion rate-controlling layer and a lithium layer stacked successively on the surface thereof, and a method for manufacturing the same are disclosed. The electrode includes: a current collector; an electrode active material layer formed on the surface of the current collector; a lithium diffusion rate-controlling layer formed on the surface of the electrode active material layer; and a lithium layer containing a lithium metal ingredient and formed on the surface of the lithium diffusion rate-controlling layer.

Growing community of inventors

Daejeon, South Korea

Sun-Kyu Kim