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STRUCTURAL AND ELECTROCHEMICAL STUDIES OF Li-Co-Cr-O OXIDES PREPARED BY WET CHEMISTRY

机译:湿化学法制备Li-Co-Cr-O氧化物的结构与电化学研究

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摘要

Substituted lithium cobaltates LiCo_(1-y)Cr_yO_2 have been synthesized using four different low-temperature methods. These involved the mixing of either acetates or nitrates of the metals, Co and Cr, with a chelating agent in aqueous solution, namely citric acid for sol-gel method, oxalic acid for co-precipitation method, succinic acid for pyrolysis method or complexing agent glycine for combustion method. The synthesized products were characterized by DTA-TG, XRD, and FTIR. The electrochemical behavior of LiCo_(0.7)Cr_(0.3)O_2 oxide was evaluated in lithium cell.
机译:已使用四种不同的低温方法合成了取代的钴酸锂LiCo_(1-y)Cr_yO_2。其中包括将金属Co和Cr的乙酸盐或硝酸盐与螯合剂在水溶液中混合,即柠檬酸用于溶胶-凝胶法,草酸用于共沉淀法,琥珀酸用于热解法或络合剂。甘氨酸为燃烧法。通过DTA-TG,XRD和FTIR对合成产物进行了表征。在锂电池中评估了LiCo_(0.7)Cr_(0.3)O_2氧化物的电化学行为。

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