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

Authors

Ji-Hwa Jeong
Bong-Soo Jin
Woo-Seong Kim
Guoxiu Wang, University of Wollongong
Hyun-Soo Kim

RIS ID

38436

Publication Details

Jeong, J., Jin, B., Kim, W., Wang, G. & Kim, H. (2011). The influence of compositional change of 0.3Li₂MnO₃·0.7LiMn_1−xNi_yCo_0.1O₂ (0.2 ≤ x ≤ 0.5, y = x − 0.1) cathode materials prepared by co-precipitation Journal of Power Sources, 196 (7), 3439-3442.

Abstract

Cathode materials prepared by a co-precipitation are 0.3Li₂MnO₃·0.7LiMn_1−xNi_yCo_0.1O₂ (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/0.3Li₂MnO₃·0.7LiMn_1−xNi_yCo_0.1O₂ (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.