Electrochemical characteristics of cobalt-doped LiCoyMn2−yO4 (0≤y≤0.66) spinels synthesized at low temperature from CoxMn3−xO4 precursors
作者： JM Amarilla , JL Martın De Vidales , RM Rojas
DOI: 10.1016/S0167-2738(99)00268-4
关键词:
摘要: Abstract A series of Co-doped LiMn 2 O 4 spinels general formula LiCo y Mn 2− (0≤ ≤0.66) has been synthesized by a new procedure, i.e. reacting Co x 3− ≤0.99) precursors with LiOH·H at 600°C for h. Structural and electrochemical characterization carried out. The have obtained as single-phase compounds, lattice parameters decreasing from 8.2090(4) the to 8.0664(4) 0.66 1.34 . compounds small crystallite size, that ranges 250 400 A. first cycle Li//LiCo cells studied step potential spectroscopy (SPECS). lithium extraction/insertion mechanism studied. linear diminution spinel capacity on increasing Co-dopant content is observed cycle. For doped remarkable enhancement cyclability retention initial >90% after 12 cycles low current density (C/30) observed.
elsevier.com
sci-hub.se 参考文章(29)
W. Liu, K. Kowal, G. C. Farrington, Mechanism of the electrochemical insertion of lithium into LiMn{sub 2}O{sub 4} spinels Journal of The Electrochemical Society. ,vol. 145, pp. 459- 465 ,(1998) , 10.1149/1.1838285
J. O. Thomas, H. Berg, Wen Liu, G. C. Farrington, A neutron diffraction study of Ni substituted LiMn2O4 Solid State Ionics. ,vol. 112, pp. 165- 168 ,(1998)
David Linden, Handbook Of Batteries ,(2001)
N. Hayashi, H. Ikuta, M. Wakihara, Cathode of LiMg y Mn2 − y O 4 and LiMg y Mn2 − y O 4 − δ Spinel Phases for Lithium Secondary Batteries Journal of The Electrochemical Society. ,vol. 146, pp. 1351- 1354 ,(1999) , 10.1149/1.1391769
Qiming Zhong, Arman Bonakdarpour, Meijie Zhang, Yuan Gao, J. R. Dahn, Synthesis and Electrochemistry of LiNi x Mn2 − x O 4 Journal of The Electrochemical Society. ,vol. 144, pp. 205- 213 ,(1997) , 10.1149/1.1837386
Li Guohua, H. Ikuta, T. Uchida, M. Wakihara, The Spinel Phases LiM y Mn2 − y O 4 (M = Co, Cr, Ni) as the Cathode for Rechargeable Lithium Batteries Journal of The Electrochemical Society. ,vol. 143, pp. 178- 182 ,(1996) , 10.1149/1.1836405
Yongyao Xia, Yunhong Zhou, Masaki Yoshio, Capacity Fading on Cycling of 4 V Li / LiMn2 O 4 Cells Journal of The Electrochemical Society. ,vol. 144, pp. 2593- 2600 ,(1997) , 10.1149/1.1837870
J. M. Tarascon, E. Wang, F. K. Shokoohi, W. R. McKinnon, S. Colson, THE SPINEL PHASE OF LIMN2O4 AS A CATHODE IN SECONDARY LITHIUM CELLS Journal of The Electrochemical Society. ,vol. 138, pp. 2859- 2864 ,(1991) , 10.1149/1.2085330
W. Liu, K. Kowal, G. C. Farrington, Electrochemical Characteristics of Spinel Phase LiMn2 O 4‐Based Cathode Materials Prepared by the Pechini Process: Influence of Firing Temperature and Dopants Journal of The Electrochemical Society. ,vol. 143, pp. 3590- 3596 ,(1996) , 10.1149/1.1837257
J.M. Amarilla, F. Tedjar, C. Poinsignon, Influence of KOH concentration on the γ-MnO2 redox mechanism Electrochimica Acta. ,vol. 39, pp. 2321- 2331 ,(1994) , 10.1016/0013-4686(94)E0180-8