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Molten salt method is applied to synthesis stoichiometric nano-LiNiO2 in rather low temperature and short time. Our results indicate that in the process of preheating the better-crystallized LiNiO2 powder with better electrochemical performances can be produced. The final samples before and after preheating exhibit the initial discharge capacities of 151 and 148 mAh ·g-1 respectively. After 100 cycles, they decay to only 55 and 118 mAh ·g-1, with capacity retentions being 36.4% and 79.7% respectively. The lowered cation disordering is thought to be favorable for the diffusion of lithium ions, by which the enhanced electrochemial properties can be explained.
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Keywords:
- LiNiO2 /
- molten salt method /
- lithium ion battery /
- electrochemical performances
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[2] Paek S M, Yoo E J, Honma I 2009 Nano Lett. 9 72
[3] Li J, Yang C Z, Zhang X G, Zhang J, Xia B J 2009 Acta Phys. Sin. 58 6573 (in Chinese) [李 佳、杨传铮、张熙贵、张 建、夏保佳 2009 物理学报 58 6573]
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[19] Ni J F, Zhou H H, Chen J T, Zhang X X 2007 Mater. Lett. 61 1260
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[22] Liang H Y, Qiu X P, Chen H L, He Z Q, Zhu W T, Chen L Q 2004 Electrochem. Commun. 6 789
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[25] Zhao S, Bai Y, Zhang W F 2010 Electrochim. Acta 55 3891
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[1] Kang K, Meng Y S, Breger J, Grey C P, Ceder G 2006 Science 311 977
[2] Paek S M, Yoo E J, Honma I 2009 Nano Lett. 9 72
[3] Li J, Yang C Z, Zhang X G, Zhang J, Xia B J 2009 Acta Phys. Sin. 58 6573 (in Chinese) [李 佳、杨传铮、张熙贵、张 建、夏保佳 2009 物理学报 58 6573]
[4] Hou X H, Yu H W, Hu S J 2010 Acta Phys. Sin. 59 8226 (in Chinese) [侯贤华、余洪文、胡社军 2009 物理学报 59 8226]
[5] Hou X H, Du S J, Li W S, Zhao L Z, Yu H W, Tan C L 2008 Acta Phys. Sin. 57 2374 (in Chinese) [侯贤华、杜社军、李伟善、赵灵智、余洪文、谭春林 2008 物理学报 57 2374]
[6] Hou Z F, Liu H Y, Zhu Z Z, Huang M C, Yang Y 2003 Acta Phys. Sin. 52 952 (in Chinese) [候柱锋、刘慧英、朱梓忠、黄美纯、杨 勇 2003 物理学报 52 952]
[7] Hu G J, Ouyang C Y 2010 Acta Phys. Sin. 59 5863 (in Chinese) [胡国进、欧阳楚英 2010 物理学报 59 5863]
[8] Nishida Y, Nakane K, Stoh T 1997 J. Power Sour. 68 561
[9] Han C H, Kim J H, Paeng S H, Kwak D J, Sung Y M 2009 Thin Solid Films 517 4215
[10] Kim C J, Ahn I S, Cho K K, Lee S G, Chung J K 2008 J. Alloys Compd. 449 335
[11] Mehrdad B, Sirous A 2010 J. Nanomater. 2010 695083
[12] Wang J M, Hu J P, Ouyang C Y, Shi S Q, Lei M S 2011 Solid State Commun.151 234
[13] Park H R 2010 J. Ind. Eng. Chem. 16 698
[14] Song M Y, Kwon I H, Shim S, Song J H 2010 Ceram. Int. 36 1225
[15] Lee K K, Yoon W S, Kim K Bum, Lee K Y, Hong S T 2001 J. Electrochem. Soc. 148 A716
[16] Kalyani P, Kalaiselvi N 2005 Sci. Technol. Adv. Mater. 6 689
[17] Han C H, Hong Y S, Kim K 2003 Solid State Ionics 159 241
[18] Kim J H, Myung S T, Sun Y K 2004 Electrochim. Acta 49 219
[19] Ni J F, Zhou H H, Chen J T, Zhang X X 2007 Mater. Lett. 61 1260
[20] Han C H, Hong Y S, Park C M, Kim K 2001 J. Power Sour. 92 95
[21] Liang H Y, Qiu X P, Zhang S C, He Z Q, Zhu W T, Chen L Q 2004 Electrochem. Commun. 6 505
[22] Liang H Y, Qiu X P, Chen H L, He Z Q, Zhu W T, Chen L Q 2004 Electrochem. Commun. 6 789
[23] Chang Z R, Qi X, Wu F, Tang H W, Xu Q H 2006 Funct. Mater. 37 896 (in Chinese) [常照荣、齐 霞、吴 锋、汤宏伟、徐秋红 2006 功能材料 37 896]
[24] Wang J P, Bai Y, Wu M Y, Zhang W F 2009 J. Power Sourc. 191 614
[25] Zhao S, Bai Y, Zhang W F 2010 Electrochim. Acta 55 3891
[26] Song M, Kwon I, Kim H 2005 J. Appl. Electrochem. 35 1073
[27] Ohzuku T, Ueda A, Nagayama M 1993 J. Electrochem. Soc. 140 1862
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