Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Hyouk-soo Han

Young-min Choi

Heung-sup Park

Sung-jun Park

Young-bong Kim

Taek-yong Jung

Sun-hyung Lee

Gwang-hyun Jo

Yung-mi Kim

Yoon-seok Kim

An image forming apparatus includes a developing module which develops a toner image on a printing medium, a fixing module which fixes the toner image onto the printing medium, and a toner neutralization module arranged on a travel path of the printing medium between the developing module and the fixing module to electrically neutralize the toner image on the printing medium.

Image forming apparatus

A cathode active material of formula (1) below, and a lithium secondary battery using the same, have an extended cycle life and effective charging/discharging characteristics and include a compound of formula (1) below:LiCoMA&#x2003;&#x2003;(1)where 0.95&#x2266;x&#x2266;1.0; 0&#x2266;y&#x2266;1; M is at least one selected from the group consisting of Ni, Fe, Pb, Mg, Al, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, As, Zr, Mn, and Cr; and A is one selected from the group consisting of O, F, S, and P. The cathode active material has, as measured by Raman spectroscopy, a ratio of peak intensities between spinel and hexagonal Avibrational modes in an approximate range of 1:0.1-1:0.4, a ratio of peak intensities between hexagonal Aand Evibrational modes in an approximate range of 1:0.9-1:3.5, and a ratio of peak intensities between spinel Aand Fvibrational modes in an approximate range of 1:0.2-1:0.4.

Cathode active material and lithium secondary battery using the same

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Seoul, South Korea

Hyouk-soo Han