Samsung Sdi Co., Inc.

Sujin Um

Young-Kee Kim

Byoung Dong Kim

Sun-Il Park

Soojeong Lee

Eun Jung Kim

Dong-Hyun Shin

Jung Woo An

Hyunuk Cho

Jungyeon Won

Jungwook Cha

A negative active material for a rechargeable lithium battery includes a lithium titanate compound represented by Chemical Formula 1, where R, a Raman spectrum intensity ratio (I(F2u)/I(F2g)) of an F2u peak in a range of about 200 cmto about 300 cmrelative to an F2g peak in a range of about 400 cmto about 550 cmis greater than or equal to about 0.7.LiTiMO&#x2003;&#x2003;Chemical Formula 1 In Chemical Formula 1, &#x2212;0.2&#x2264;x&#x2264;0.2, &#x2212;0.3&#x2264;y&#x2264;0.3, 0&#x2264;z&#x2264;0.3, &#x2212;0.3&#x2264;n&#x2264;0.3, and M is selected from Mg, Al, Ca, Sr, Cr, V, Fe, Co, Ni, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, Ba, La, Ce, Ag, Ta, Hf, Ru, Bi, Sb, As, and a combination thereof.

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

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode for a rechargeable lithium battery includes a negative active material layer including a negative active material including a Si-based active material; nanoclay; and an aqueous binder; and a current collector supporting the negative active material layer.

Negative electrode for rechargeable lithium battery, and rechargeable lithium battery including same

A separator for a rechargeable lithium battery includes a polymer substrate, and a coating layer on at least one surface of the polymer substrate. The coating layer includes a ceramic, a binder, and a nanoclay having an interlayer spacing (d-spacing) of about 10 &#x212b; to about 50 &#x212b;.

Separator for rechargeable lithium battery and rechargeable lithium battery including same

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Yongin-si, South Korea

Sujin Um