Samsung Electronics Co., Ltd.

Korea Electronics Technology Institute

Ji-Sang Yu

Jae-Won Lee

Jin-hwan Park

Young-min Choi

Tae-sang Park

Ji-young Jeong

Ji-Yeon Hong

Sang-Gil Woo

Je-Nam Lee

Eun-Kyoung Kim

Meen-seon Paik

Jong-Youb Ryu

Sung-Ja Choi

The present invention relates to a cathode containing a solid superacid to improve the electrochemical properties and lifetime properties of the cathode using sulfur as an active material, and to a lithium-sulfur secondary battery including the cathode. According to an embodiment, a cathode for a lithium-sulfur secondary battery contains sulfur and a solid superacid. Since the solid superacid in the cathode does not affect the electrochemical properties of the cathode containing sulfur, it is possible to utilize sulfur itself as the cathode active material without technical processing. As a result, it is possible to minimize a reduction in the energy density of the lithium-sulfur secondary battery. In addition, the solid superacid in the cathode can improve the long-term lifetime properties of the lithium-sulfur secondary battery by controlling the polysulfide which is an intermediate product of the charging and discharging reactions of lithium and sulfur.

Cathode containing solid superacid and lithium-sulfur secondary battery including the same

A battery and a battery pack including the battery. The battery includes: a frame; an electrode assembly disposed around the frame; a main body to house the electrode assembly; and electrode terminals extending from the electrode assembly in a first direction, through the main body. A cooling hole extends through opposing sides of the main body, in a second direction that is generally perpendicular to the first direction.

Battery and battery pack comprising the same

Growing community of inventors

Yongin-si, South Korea

Ji-Sang Yu