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EFFECT OF SYNTHESIZING TEMPERATURE ON THE STRUCTURE AND PROPERTY OF HEXAGONAL Li-Ni-Co-Mn-O SOLID SOLUTION |
TANG Aidong; HUANG Kelong |
Institute of Functional Material Chemistry; School of Chemistry and Chemical Engineering; Central South University; Changsha 410083 |
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Cite this article:
TANG Aidong; HUANG Kelong. EFFECT OF SYNTHESIZING TEMPERATURE ON THE STRUCTURE AND PROPERTY OF HEXAGONAL Li-Ni-Co-Mn-O SOLID SOLUTION. Acta Metall Sin, 2005, 41(12): 1280-1284 .
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Abstract The cathode material for lithium batteries Li1.15-xNi1/3Co1/3Mn1/3O2+δ has
been synthesized by sol-gel technique. The effects of synthesizing
temperature on the structure, micro-morphology and electrochemical
properties of these materials were investigated using X-ray diffraction,
scanning electron microscopy and charge-discharge cycling tests. The
material synthesized at 600 ℃ has a hexagonal layered structure. The
intensity of the diffraction peaks and the particle size of the material
synthesized at 920-980 ℃ increased with synthesizing temperature.
The ratio values of I_003/I_104 and unit cell volume of the
material synthesized at 950 ℃ are larger than those of the material
synthesized at 920 and 980 ℃. The maximum charge/discharge capacity
and the minimum electrode polarization were obtained for the material
synthesized at 950 ℃, which has the initial discharge capacity of
180 mA•h/g in the range of 2.5-4.5 V at a specific current
of 28 mA/g.
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Received: 04 April 2005
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[1] Lee M-H, Kang Y-J, Myung S-T, Sun Y-K. Electrochim Acta, 2004; 50: 939 [2] Arachi Y, Kobayashi H, Emura S, Nakata Y, Tanaka M, Asai T, Sakaebe H, Tatsumi K, Kageyama H. Solid State Ionics, 2005; 176: 895 [3] Park Y J, Wu X L, Hong Y S, Ryu K S, Chang S H. Solid State Ionics, 2004; 175: 305 [4] Li J G, Wan C R, Yang D P, Yang Z P. Acta Phys Chim Sin, 2003; 19: 1030 (李建刚,万春荣,杨冬平,杨张平.物理化学学报,2003;19: 1030) [5] Park Y J, Hong Y S, Wu X L, Ryu K S, Chang S H. J Power Sources, 2004; 129: 288 [6] Kang S-H, Amine K. J Power Sources, 2003; 124: 533 [7] Yabuuchi N, Ohzuku T. J Power Sources, 2003; 119-121: 171 [8] Yoshio M, Noguchi K, Itoh J, Okada M, Mouri T. J Power Sources, 2000; 90: 176 [9] Shaju K M, Subba Rao G V, Chowdari B V R. Electrochim Acta, 2002; 48: 145 [10] Shaju K M, Subba Rao G V, Chowdari B. Electrochim Acta, 2003; 48: 1505 [11] Ohzuku T, Ueda A. J Electrochem Soc, 1994; 141: 2972 [12] Kim J M, Chung H T. Electrochim Acta, 2004; 49: 3573 [13] Kim J M, Chung H T. Electrochim Acta, 2004; 49: 937 |
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