Synthesis, Characterization, and Thermal Stability of LiNi1/3Mn1/3Co1/3-zMgzO2, LiNi1/3-zMn1/3Co1/3MgzO2 and LiNi1/3Mn1/3-zCo1/3MgzO2

被引:96
作者
Luo, Wenbin [1 ,2 ]
Zhou, Fu [1 ]
Zhao, Xuemei [1 ]
Lu, Zhonghua [3 ]
Li, Xinhai [2 ]
Dahn, J. R. [1 ]
机构
[1] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 3J5, Canada
[2] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Hunan, Peoples R China
[3] 3M Co, Ctr 3M, St Paul, MN 55144 USA
关键词
CATHODE MATERIALS; LITHIUM; REACTIVITY; LICOO2; ELECTROLYTE;
D O I
10.1021/cm902593n
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
LiNi1/3Mn1/3Co1/3-zMgzO2, LiNi1/3-zMn1/13Co1/3MgzO2, and LiNi1/3Mn1/3-zCo1/3MgzO2(0 <= 1/3) were prepared from hydroxide precursors. The hydroxide precursors were heated with Li2CO3 at 900 degrees C to prepare the oxides. Rietveld refinements of XRD data show that Mg substitution for Co, Ni and Mn results in different degrees of cation mixing in the Li layer with very little cation mixing in LiNi1/3Mn1/3-zCo1/3MgzO2 and the most cation mixing in LiNi1/3Mn1/3Co1/3-zMgzO2. Electrochemical studies of the LiNi1/3Mn1/3Co1/3-zMgzO2, LiNi1/3-zMn1/3Co1/3MgzO2, and LiNi1/3Mn1/3-zCo1/3MgzO2 (0 <= z < 1/3) samples were used to measure the rate of capacity reduction with Mg content, found to be about -389 (mAh/g)/(z = 1) independent of which cation was substituted by Mg. The impact of Mg substitution on the thermal stability of NMC samples was studied via accelerating rate calorimetry and compared with Al-substituted NMC samples. The substitution of Mg did not improve the thermal stability of the samples, independent of which cation was substituted and independent of the amount of Mg added, in contrast to the effect of A1, which dramatically improves thermal stability.
引用
收藏
页码:1164 / 1172
页数:9
相关论文
共 20 条
[11]   Structure and electrochemistry of Li[NixCo1-2xMnx]O2 (0≤x≤1/2) [J].
MacNeil, DD ;
Lu, Z ;
Dahn, JR .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (10) :A1332-A1336
[12]   Synthesis of LiNi0.5Mn0.5-xTixO2 by an emulsion drying method and effect of Ti on structure and electrochemical properties [J].
Myung, ST ;
Komaba, S ;
Hosoya, K ;
Hirosaki, N ;
Miura, Y ;
Kumagai, N .
CHEMISTRY OF MATERIALS, 2005, 17 (09) :2427-2435
[13]   Synthesis and characterization of LiAl1/4Ni3/4O2 (R(3)over-bar-m) for lithium-ion (shuttlecock) batteries [J].
Ohzuku, T ;
Ueda, A ;
Kouguchi, M .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1995, 142 (12) :4033-4039
[14]  
Ohzuku T, 2001, CHEM LETT, P642, DOI 10.1246/cl.2001.642
[15]   Accelerating rate calorimetry study on the thermal stability of lithium intercalated graphite in electrolyte I. Experimental [J].
Richard, MN ;
Dahn, JR .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (06) :2068-2077
[16]   REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES [J].
SHANNON, RD .
ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1) :751-767
[17]   Electronic conductivity of LiCoO2 and its enhancement by magnesium doping [J].
Tukamoto, H ;
West, AR .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (09) :3164-3168
[18]   The reactivity of delithiated Li(Ni1/3Co1/3Mn1/3)O2, Li(Ni0.8Co0.15Al0.05)O2 or LiCoO2 with non-aqueous electrolyte [J].
Wang, Yadong ;
Jiang, Junwei ;
Dahn, J. R. .
ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (10) :2534-2540
[19]   Accelerating rate calorimetry studies of the reactions between ionic liquids and charged lithium ion battery electrode materials [J].
Wang, Yadong ;
Zaghib, K. ;
Guerfi, A. ;
Bazito, Fernanda F. C. ;
Torresi, Roberto M. ;
Dahn, J. R. .
ELECTROCHIMICA ACTA, 2007, 52 (22) :6346-6352
[20]   The effect of Al substitution on the reactivity of delithiated LiNi1/3Mn1/3Co(1/3-z)AlzO2 with non-aqueous electrolyte [J].
Zhou, Fu ;
Zhao, Xuemei ;
Lu, Zhonghua ;
Jiang, Junwei ;
Dahn, J. R. .
ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (08) :1168-1171