Abstract
Three kinds of lithium-cobalt oxides with lithium to cobalt atomic ratios of 0.6, 0.8 and 1.0 respectively were prepared using nitrates and citric acid by sol-gel process. During the baking of the dry-gel powder, two exothermic peaks occur, followed by the formation of Li2O and Co3O4 and then the combination of LiCoO2, which is testified by DTA and XRD. The powder formed from an alkaline sol is finer than that from the acidic one. There are a single phase intercalation of lithium ion and an electrochemical reduction reaction for higher-valence cobalt ion when simulating the discharging process of Li-B/LiCl-KCl/lithium-cobalt oxides at 500 °C, and the voltage and specific capacity are not sensitive to the initial ratios of lithium to cobalt.
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References
Sanchez P, Belin C, Crepy G, et al. Preparation and characterization of lithium-boron alloys[J]. J Mater Sci, 1992, 27: 240–246
James S, Devries L E. Structure and anodic discharge behavior of lithium-boron alloys in the LiCl-KCl eutectic melt[J]. J Electrochem Soc, 1976, 123(3): 321–327
Wolverton C, Zunger A. Prediction of Li intercalation and batteries voltages in layered vs. cubic LixCoO2[J]. J Electrochem Soc, 1998, 145(6): 2424–2431
LI W, Currie J C. Morphology effects on the electrochemical performance of LiNi1−x Co x O2[J]. J Electrochem Soc, 1997, 144(8): 2773–2779
Vitins G, West K. Lithium intercalation into layered LiMnO2[J]. J Electrochem Soc, 1997, 144(8): 2587–2592
Lagergren C, Lundblad A, Bergman B. Synthesis and performance of LiCoO2 cathodes for the molten carbonate fuel cell[J]. J Electrochem Soc, 1994, 141(7): 2959–2966
Reimers J N, Dahn J R. Electrochemical and in situ X-ray diffraction studies of lithium intercalation in Li x CoO2[J]. J Electrochem Soc, 1992, 139(8): 2091–2097
Gummow R J, Liles D C, Thacheray M M. A reinvestigation of the structures of lithium-cobalt-oxides with neutron-diffraction data[J]. Mater Res Bull, 1993, 28: 1177–1184
Arai H, Okada S, Sakurai Y, et al. Electrochemical and thermal behavior of LiNi1−x M z O2 (M = Co, Mn, Ti)[J]. J Electrochem Soc, 1997, 144(9): 3117–3125
LIU Zhi-jina, TANG Hua-fen, LI Zhi-you, et al. Phase composition of Li-B alloy used for thermal battery and its influence to discharge behavior[J]. J Funct Mater, 1998, 29(suppl.): 760–763
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Foundation item: The Doctoral Foundation of the Education Ministry of China(No. 96053311)
Biography of the first author: LI Zhi-you, born in 1968, majoring in materials for thermal battery.
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Li, Zy., Huang, By., Zhu, Yl. et al. Synthesis of lithium-cobalt oxides by sol-gel method and their cathodical discharge behavior at 500 °C. J Cent. South Univ. Technol. 7, 57–60 (2000). https://doi.org/10.1007/s11771-000-0031-y
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DOI: https://doi.org/10.1007/s11771-000-0031-y