Samsung Sdi Co., Inc.

Bok-Hwan Jung

Sung-Soo Kim

Keiko Matsubara

Toshiaki Tsuno

Akira Takamuka

Sung-soo Kim

Sang-Jin Kim

Sang-Min Lee

Kyou-Yoon Sheem

Goo-Jin Jeong

Joon-Sup Kim

A negative active material of a non-aqueous electrolyte battery includes a compound represented by formula 1:LiMVO&#x2003;&#x2003;(1)where 0.1&#x2266;x&#x2266;2.5, 0&#x3c;y&#x2266;0.5, 0.5&#x2266;z&#x2266;1.5, 0&#x2266;d&#x2266;0.5, and M is at least one element selected from the group consisting of Al, Cr, Mo, Ti, W, and Zr.

Negative active material for a non-aqueous electrolyte battery, and a non-aqueous electrolyte battery comprising the same

Disclosed is an electrode material for a lithium secondary battery, a lithium secondary battery comprising the same, and a method for preparing the electrode material for a lithium secondary battery. The electrode material for a lithium secondary battery includes Si as a principal component, wherein the interplanar spacing of an Si (111) surface is between 3.15 &#x212b;and 3.20 &#x212b; using X-ray diffraction. This is achieve by first alloying Si with an element selected from the group consisting of Al, B, P, Ge, Sn, Pb, Ni, Co, Mn, Mo, Cr, V, Cu, Fe, Ni, W, Ti, Zn, alkali metals, alkaline earth metals, and combinations thereof, and then eluting X from the resulting alloy.

Electrode material for a lithium secondary battery, lithium secondary battery, and preparation method for the electrode material for a lithium secondary battery

Disclosed is an electrode material for a lithium secondary battery, a lithium secondary battery comprising the same, and a method for preparing the electrode material for a lithium secondary battery. The electrode material for a lithium secondary battery includes Si as a principal component, wherein the interplanar spacing of an Si(111) surface between 3.15 &#x212b; and 3.20 &#x212b; using X-ray diffraction. This is achieve by first alloying Si with an element selected from the group consisting of Al, B, P, Ge, Sn, Pb, Ni, Co, Mn, Mo, Cr, V, Cu, Fe, Ni, W, Ti, Zn, alkali metals, alkaline earth metals, and combinations thereof, and then eluting X from the resulting alloy.

Disclosed is an electrode for a lithium secondary battery comprising a negative active material powder comprising a metal capable of alloying with lithium, a conductive material powder, and a binder, wherein the density thereof is between 1.2 g/cmand 4.0 g/cm.

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Suwon-si, South Korea

Bok-Hwan Jung