锂电池阴极材料Li(Co_xAl_(1-x))O_2的溶胶-凝胶法合成及表征

Sol-Gel Synthesis and Characterization of Cathode Materials Li(Co_x Al_(1-x))O-2 for Lithium Battery

采用溶胶 -凝胶方法合成了锂二次电池阴极材料 Li( Cox Al1 - x) O2 ,并采用 XRD方法分析了材料的相变过程、烧结时间对材料合成的影响及不同 Al/Co比掺杂对材料相变的影响 ,并进行了结构表征 .研究表明 ,材料结构随 Al固溶度的增大及温度的升高呈现出 a轴缩短 ,c轴伸长的趋势 .材料晶相稳定温度在60 0～ 90 0℃之间 ,烧结时间在 3

The cathode material for lithium batteries Li(Co x Al 1-x )O 2 has been synthesized by sol gel technique. The effects of sintering temperature, sintering time and the molar ratio of Al and Co on the phase behavior of material was investigated via X ray diffraction. It is shown that the suitable synthetic and processing condition is that the sintering temperature is in the range of 600—900 ℃ and the sintering time is over 3 h.