Samsung Sdi Co., Inc.

Postech Academy-industry Foundation

Sogang University Research Business Development Foundation

Postech Research and Business Development Foundation

Junyong Lee

Soojin Kim

Tae Jin Lee

Hyunbong Choi

Wonseok Cho

Jin-Hyeok Lim

Hoon Bae Kim

Hoon Sik Kim

Aeran Kim

Myunghwan Jeong

Jungmin Han

Jeongmin Shin

Suyeol Ryu

Younghye Kang

Dongyoung Kim

Pavel Shatunov

Seungyeol Yoo

Injun Park

Huijun Lee

Hyejeong Jeong

Sanghoon Kim

Myungheui Woo

Olga Tsay

Jongseok Moon

Jinah Seo

Moon Jeong Park

Taesik Kim

Bongjin Moon

Haneol Kang

Youngchan Bang

Huijung Park

Provided are an additive represented by Chemical Formula 1, an electrolyte for a lithium secondary battery including the same, and a lithium secondary battery. The details of Chemical Formula 1 are as set forth in the specification.

Additive, and lithium secondary battery electrolyte and lithium battery which comprise same

Provided is an electrolyte for a lithium secondary battery, the electrolyte including a non-aqueous organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Chemical Formula 1. The definitions of each of the substituents in Chemical Formula 1 are as set forth in the detailed description.

Electrolyte for lithium secondary battery and lithium secondary battery comprising same

Provided is an electrolyte solution for a lithium secondary battery, the electrolyte solution comprising a non-aqueous organic solvent, a lithium salt, and an additive, wherein the additive includes a compound represented by Chemical Formula 1. The contents of Chemical Formula 1 are the same as described in the specification.

Electrolyte solution for lithium secondary battery and lithium secondary battery comprising same

An additive, an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery, the additive being represented by Chemical Formula 1:

Additive, electrolyte for rechargeable lithium battery, and rechargeable lithium battery

An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the electrolyte, the electrolyte including a non-aqueous organic solvent; a lithium salt; and an additive, wherein the additive includes a compound represented by Chemical Formula 1:

Electrolyte for rechargeable lithium battery and rechargeable lithium battery

An additive represented by Chemical Formula 1, an electrolyte for a rechargeable lithium battery including the same, and a rechargeable lithium battery,

Additive, electrolyte for rechargeable lithium battery, and rechargeable lithium battery including the same

An additive, an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery, the additive being represented by Chemical Formula 1: 

Additive, electrolyte for rechargeable lithium battery and rechargeable lithium battery including the same

The present invention relates to a lithium secondary battery. The lithium secondary battery includes a positive electrode including a positive active material; a negative electrode including a negative active material; and an electrolyte including a non-aqueous organic solvent, a lithium salt, and an additive including a compound represented by Chemical Formula 1. The negative active material includes Si at about 0.1 wt % to about 32 wt % in amount based on a total weight of the negative active material. 

Lithium secondary battery comprising electrolyte

A secondary battery according to embodiments of the present invention can reduce or prevent an uncoated portion and the rest of an electrode assembly from being damaged when the uncoated portion and a collector plate are coupled to each other using laser welding. The secondary battery includes a case having an internal space, an electrode assembly accommodated in the case, the electrode assembly having a coated portion coated with an active material and an uncoated portion without the active material, and a collector plate including a first collector plate and a second collector plate coupled to the uncoated portion, wherein first protrusions of the first collector plate and second protrusions of the second collector plate are engaged with each other with the uncoated portion interposed therebetween, and a boundary surface between the first protrusions and the second protrusions is configured to deviate with respect to a direction in which the collector plate is coupled to the uncoated portion.

Secondary battery

A rechargeable secondary battery including: a case; an electrode assembly accommodated in the case, the electrode assembly including an active material coating portion and an active material non-coating portion; a light absorbing member coupled to the electrode assembly; and a collector plate welded to the electrode assembly and contacting the active material non-coating portion.

Rechargeable secondary battery

A secondary battery includes an electrode assembly having a relatively large capacity due to reducing a width of an uncoated portion and increasing a width of a coated portion by improving welding strength through a combination of ultrasonic welding and laser welding, and a manufacturing method thereof. The manufacturing method of the secondary battery includes preparing at least one electrode assembly including an uncoated portion, provisionally welding the uncoated portion by ultrasonic welding, coupling a current collector having an elastic property to the provisionally welded uncoated portion, and welding the uncoated portion and the current collector by laser welding.

Secondary battery and manufacturing method thereof

Growing community of inventors

Yongin-si, South Korea

Junyong Lee