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The influence of compositional change of 0.3Li2MnO3·0.7LiMn1−xNiyCo0.1O2 (0.2 ≤ x ≤ 0.5, y = x − 0.1) cathode materials prepared by co-precipitation |
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| Authors: | Ji-Hwa JeongBong-Soo Jin Woo-Seong KimGuoxiu Wang Hyun-Soo Kim |
| Affiliation: | a Battery Piezoelectric Research Center, Korea Electrotechnology Research Institute, 28-1, Seongju-dong, Changwon, Gyeongsangnam-do 641-120, Republic of Korea b Daejung EM Co., Incheon 405-820, Republic of Korea c School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, NSW 2522, Australia |
| Abstract: | Cathode materials prepared by a co-precipitation are 0.3Li2MnO3·0.7LiMn1−xNiyCo0.1O2 (0.2 ≤ x ≤ 0.4) cathode materials with a layered-spinel structure. In the voltage range of 2.0-4.6 V, the cathodes show more than one redox reaction peak during its cyclic voltammogram. The Li/0.3Li2MnO3·0.7LiMn1−xNiyCo0.1O2 (x = 0.3, y = 0.2) cell shows the initial discharge capacity of about 200 mAh g−1. However, when x = 0.2 and y = 0.1, the cell exhibits a rapid decrease in discharge capacity and poor cycle life. |
| Keywords: | Lithium ion batteries 0 3Li2MnO3· 0 7LiMn1&minus xNiyCo0 1O2 Co-precipitation |
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