Reverse-microemulsion preparation and characterization of ultrafine orthorhombic LiMnO2 powders for lithium-ion secondary batteries
作者： Chung-Hsin Lu , Hsien-Cheng Wang
DOI: 10.1016/S0955-2219(03)00332-7
关键词: Particle size 、 Dielectric spectroscopy 、 Diffusion 、 Chemical engineering 、 Microemulsion 、 Reversible reaction 、 Inorganic chemistry 、 Orthorhombic crystal system 、 Lithium 、 Crystallinity 、 Materials science
摘要: Abstract Ultrafine orthorhombic LiMnO2 (o-LiMnO2) were successfully synthesized using a newly developed reverse-microemulsion (RμE) process. To prepare o-LiMnO2 powders with rock salt structure, precise control of the oxygen content in heating atmosphere was required. Monophasic obtained at as low 700 °C. Not only reaction temperature lowered, duration for synthesizing desired also markedly shortened via RμE route. The average particle size 900 °C-calcined measured to be around 90 nm. discharge capacities prepared significantly increased initial stages, and rapidly reached saturated plateau. impedance spectroscopy analysis revealed that chemical diffusion coefficient lithium ions greater than LiMn2O4-based materials. high rate is attributed crystallinity well nanosize this
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sci-hub.se 参考文章(32)
Yongyao Xia, Masaki Yoshio, Optimization of Spinel Li1 + x Mn2 − y O 4 as a 4 V Li‐Cell Cathode in Terms of a Li‐Mn‐O Phase Diagram Journal of The Electrochemical Society. ,vol. 144, pp. 4186- 4194 ,(1997) , 10.1149/1.1838164
W. Li, J. C. Currie, Morphology Effects on the Electrochemical Performance of LiNi1 − x Co x O 2 Journal of The Electrochemical Society. ,vol. 144, pp. 2773- 2779 ,(1997) , 10.1149/1.1837894
Young‐Il Jang, Biying Huang, Haifeng Wang, Donald R. Sadoway, Yet‐Ming Chiang, Electrochemical Cycling‐Induced Spinel Formation in High‐Charge‐Capacity Orthorhombic LiMnO2 Journal of The Electrochemical Society. ,vol. 146, pp. 3217- 3223 ,(1999) , 10.1149/1.1392457
Chung-Hsin Lu, Hsien-Cheng Wang, Synthesis of nano-sized LiNi0.8Co0.2O2via a reverse-microemulsion route Journal of Materials Chemistry. ,vol. 13, pp. 428- 431 ,(2003) , 10.1039/B204394G
GX Wang, P Yao, S Zhong, DH t Bradhurst, SX Dou, HK Liu, None, Electrochemical study on orthorhombic LiMnO2 as cathode in rechargeablelithium batteries Journal of Applied Electrochemistry. ,vol. 29, pp. 1423- 1426 ,(1999) , 10.1023/A:1003877932598
I.J. Davidson, R.S. McMillan, J.J. Murray, J.E. Greedan, Lithium-ion cell based on orthorhombic LiMnO2 Journal of Power Sources. ,vol. 54, pp. 232- 235 ,(1995) , 10.1016/0378-7753(94)02074-D
D. Guyomard, J. M. Tarascon, Li Metal‐Free Rechargeable LiMn2 O 4 / Carbon Cells: Their Understanding and Optimization Journal of The Electrochemical Society. ,vol. 139, pp. 937- 948 ,(1992) , 10.1149/1.2069372
Chung-Hsin Lu, Hsien-Cheng Wang, Effects of cobalt-ion doping on the electrochemical properties of spinel lithium manganese oxide prepared via a reverse-micelle route Journal of The European Ceramic Society. ,vol. 23, pp. 865- 871 ,(2003) , 10.1016/S0955-2219(02)00209-1
L. Croguennec, P. Deniard, R. Brec, Electrochemical Cyclability of Orthorhombic LiMnO2 Characterization of Cycled Materials Journal of The Electrochemical Society. ,vol. 144, pp. 3323- 3330 ,(1997) , 10.1149/1.1838013
M. M. Thackeray, Structural Considerations of Layered and Spinel Lithiated Oxides for Lithium Ion Batteries Journal of The Electrochemical Society. ,vol. 142, pp. 2558- 2563 ,(1995) , 10.1149/1.2050053