High capacity Li[Li0.2Ni0.2Mn0.6]O-2 cathode materials via a carbonate co-precipitation method

Lee, D. -K.; Park, Sangho; Amine, Khalil; Bang, Hyunjoo; Parakash, J.; Sun, Yang-Kook

doi:10.1016/j.jpowsour.2006.07.064

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High capacity Li[Li0.2Ni0.2Mn0.6]O-2 cathode materials via a carbonate co-precipitation method

Lee, D. -K.;
Park, Sangho;
Amine, Khalil ;
Bang, Hyunjoo;
Parakash, J.;
... Sun, Yang-Kook

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134

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137

초록

Spherical Li[Li0.2Ni0.2Mn0.6]O-2 has been synthesized by a carbonate co-precipitation method. The Li[Li0.2Ni0.2Mn0.6]O-2 with a phase-pure and well-ordered layered structure was synthesized by heat-treatment of a spherical (Ni0.25Mn0.75)(3)O-4 precursor with (LiOHH2O)-H-.. The average particle size of the Li[Li0.2Ni0.2Mn0.6]O-2 powders was approximately 20 mu m and the size distribution was quite narrow due to the homogeneity of the (Ni0.25Mn0.75)CO3. The Li[Li0.2Ni0.2Mn0.6]O-2 electrode calcined at 900 degrees C delivered an initial discharge capacity of approximately 270 mAh g(-1) in the voltage range of 2.0-4.6 V The differential scanning calorimetry (DSC) results for the Li[Li0.2Ni0.2Mn0.6]O-2 prepared at 900 degrees C showed a major exothermic reaction at 270 degrees C.

키워드

cathode material; carbonate co-precipitation; ASI; thermal stability; lithium secondary batteries; SITU X-RAY; ELECTROCHEMICAL PROPERTIES; LITHIUM; LI

제목: High capacity Li[Li0.2Ni0.2Mn0.6]O-2 cathode materials via a carbonate co-precipitation method

저자: Lee, D. -K.; Park, Sangho; Amine, Khalil ; Bang, Hyunjoo; Parakash, J.; Sun, Yang-Kook

DOI: 10.1016/j.jpowsour.2006.07.064

발행일: 2006-11

유형: Article

저널명: Journal of Power Sources

권: 162

호: 2

페이지: 1346 ~ 1350