Samsung Sdi Co., Inc.

Sunil Park

Jaehou Nah

Narae Kim

Jeongdoo Yi

Jungyup Yang

Joongho Moon

Youngugk Kim

Donghyun Shin

Eunjoo Lee

Doori Oh

Yookyung Kim

Eunji Kang

Young-Min Kim

Jaewon Kim

Deok-Hyun Kim

Hyun Soh

Changsu Shin

Pil Jin Yoo

Ilyoung Choi

Jongmin Won

Hyejin Kim

Banseok Lee

A negative active material includes a core having a silicon-carbon composite and a polymer coating layer formed on the core, wherein the negative active material has about 1.02 to about 1.6 of a ratio of height of N1s peak occurring at about 400±about 0.5 eV relative to a height of N1s peak occurring at about 405±about 0.5 eV of a bonding energy, and about 1.02 to about 3.0 of a ratio of a height of C1s peak occurring at about 286.5±about 0.5 eV relative to a height of C1s peak occurring at about 290±about 0.5 eV when an X-ray photoelectron spectroscopy (XPS) is measured.

Negative active material and rechargeable lithium battery including same

A negative active material, including a silicon-carbon composite including silicon and amorphous carbon, a metal oxide, and a metal silicate.

A negative active material for a rechargeable lithium battery includes a secondary particle in which a plurality of natural graphite primary particles are agglomerated, the plurality of primary particles including natural graphite, and the secondary particle including pores, and an amorphous carbon positioned in the pores, wherein an area of the amorphous carbon is about 10% to about 30% based on a total area of 100% of the negative active material, in a cross-section of the negative active material.

Negative active material for rechargeable lithium battery and rechargeable lithium battery including same

A rechargeable lithium battery includes a negative active material including: a secondary particle including a core in which a plurality of primary particles are agglomerated, the primary particles including a natural graphite; and a coating layer including amorphous carbon and surrounding the core, wherein a Raman peak intensity ratio of a D peak (1350 cmto 1370 cm) to a D' peak (1570 cmto 1620 cm) (I/I) of the negative active material is about 3.2 to about 3.8, and a lattice constant La of the negative active material is about 30 nm to about 45 nm.

Disclosed are an outer case for a secondary battery, and a secondary battery including the same, the outer case comprising: a first polymer resin layer; a second polymer resin layer positioned on a first surface of the first polymer resin layer, and having a first adhesive layer interposed therebetween so as to be attached thereto; and an inner resin layer positioned on a second surface of the first polymer resin layer, and having a second adhesive layer interposed therebetween so as to be attached thereto, wherein the first polymer resin layer and the second polymer resin layer respectively comprise a fluorine-containing resin.

Outer case for secondary battery, and secondary battery including same

The present disclosure relates to a sheath material for secondary battery including a moisture permeation preventing layer, a protective layer disposed on the first surface of the moisture permeation preventing layer wherein the protective layer includes a functional layer having a plurality of patterns and a resin layer disposed on the second surface of the moisture permeation preventing layer, and a secondary battery including the same.

Sheath material for secondary battery and secondary battery comprising same

Growing community of inventors

Yongin-si, South Korea

Sunil Park