Morphology and electrochemical performance of Li[Li0.2Mn0.56Ni0.16Co0.08]O2 cathode materials prepared with different metal sources

被引：19
作者：
Shi, S. J.
Tu, J. P. [1 ]
Zhang, Y. D.
Zhang, Y. J.
Gu, C. D.
Wang, X. L.
机构：
[1] Zhejiang Univ, State Key Lab Silicon Mat, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310027, Zhejiang, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2013年 / 109卷
关键词：
Lithium nickel cobalt manganese oxide; Metal source; Porosity; sol-gel; LITHIUM-ION BATTERIES; HIGH-CAPACITY; SURFACE MODIFICATION; COMPOSITE CATHODES; CYCLING STABILITY; RATE CAPABILITY; CO ELECTRODES; LI; MN; NI;
D O I：
10.1016/j.electacta.2013.08.002
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Li[Li0.2Mn0.56Ni0.16Co0.08]O-2 cathode materials with well-formed layered structure are synthesized by sol-gel process with different metal sources. Two normal metal salts (acetate and nitrate) are performed as the metal sources, and the effect of particle morphology on the electrochemical performance of the Li-rich layered oxide is investigated to show the importance of the choice of metal sources. Porosity with high specific surface area of 10.09 m(2) g(-1) is only observed for the oxide powder synthesized with nitrate. Simultaneously, high discharge capacity of 247.8 mAh g(-1) and 135.5 mAh g(-1) are obtained at current densities of 200 mA g(-1) and 2000 mA g(-1), respectively. In addition, the results of electrochemical impedance spectroscopy (EIS) indicate that such porous morphology with good particle contact can efficiently reduce the impedance of the oxide electrode. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：828 / 834
页数：7
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共 59 条
[51]   Electrochemical kinetics and cycling performance of nano Li[Li0.23Co0.3Mn0.47]O2 cathode material for lithium ion batteries [J].
Wei, Y. J. ;
Nikolowski, K. ;
Zhan, S. Y. ;
Ehrenberg, H. ;
Oswald, S. ;
Chen, G. ;
Wang, C. Z. ;
Chen, H. .
ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (10) :2008-2011
[52]   Preparation of high quality layered-layered composite Li2MnO3-LiMO2 (M = Ni, Mn, Co) Li-ion cathodes by a ball milling-annealing process [J].
West, W. C. ;
Soler, J. ;
Ratnakumar, B. V. .
JOURNAL OF POWER SOURCES, 2012, 204 :200-204
[53]   Aging mechanisms of lithium cathode materials [J].
Wohlfahrt-Mehrens, M ;
Vogler, C ;
Garche, J .
JOURNAL OF POWER SOURCES, 2004, 127 (1-2) :58-64
[54]   Preparation and electrochemical performance of Li-rich layered cathode material, Li[Ni0.2Li0.2Mn0.6]O2, for lithium-ion batteries [J].
Wu, Feng ;
Lu, Huaquan ;
Su, Yuefeng ;
Li, Ning ;
Bao, Liying ;
Chen, Shi .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 2010, 40 (04) :783-789
[55]   High capacity, surface-modified layered Li[Li(1-x)/3Mn(2-x)/3Nix/3Cox/3]O2 cathodes with low irreversible capacity loss [J].
Wu, Y ;
Manthiram, A .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2006, 9 (05) :A221-A224
[56]   Local structure and cation ordering in O3 lithium nickel manganese oxides with stoichiometry Li[NixMn(2-x)/3Li(1-2x)/3]O2 -: NMR studies and first principles calculations [J].
Yoon, WS ;
Iannopollo, S ;
Grey, CP ;
Carlier, D ;
Gorman, J ;
Reed, J ;
Ceder, G .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (07) :A167-A171
[57]   Continuous activation of Li2MnO3 component upon cycling in Li1.167Ni0.233Co0.100Mn0.467Mo0.033O2 cathode material for lithium ion batteries [J].
Yu, Seung-Ho ;
Yoon, Taeho ;
Mun, Junyoung ;
Park, Sangjin ;
Kang, Yoon-Sok ;
Park, Jin-Hwan ;
Oh, Seung M. ;
Sung, Yung-Eun .
JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (08) :2833-2839
[58]   Synthesis, characterization, and electrochemistry of cathode material Li [Li0.2Co0.13Ni0.13Mn0.54]O2 using organic chelating agents for lithium-ion batteries [J].
Zhao, Taolin ;
Chen, Shi ;
Li, Li ;
Zhang, Xiaofeng ;
Chen, Renjie ;
Belharouak, Ilias ;
Wu, Feng ;
Amine, Khalil .
JOURNAL OF POWER SOURCES, 2013, 228 :206-213
[59]   A comparison of preparation method on the electrochemical performance of cathode material Li[Li0.2Mn0.54Ni0.13Co0.13]O2 for lithium ion battery [J].
Zheng, J. M. ;
Wu, X. B. ;
Yang, Y. .
ELECTROCHIMICA ACTA, 2011, 56 (08) :3071-3078
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