Huang Yudai, Li Juan, Jia Dianzeng
Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, People's Republic of China.
J Colloid Interface Sci. 2005 Jun 1;286(1):263-7. doi: 10.1016/j.jcis.2004.12.049.
Cathode material LiMn2-yCoyO4 spinels were prepared by annealing the mixed precursors, which were synthesized by a low heating solid state coordination method using lithium acetate, manganese acetate, cobalt acetate, and oxalic acid as original materials. The structures and morphologies of the LiMn2-yCoyO4 spinels were investigated as a function of annealing temperature and time. The results showed that all samples in different annealing temperature and time had the same spinel structure. There were some growth and agglomeration in the particles when annealing temperature increased from 450 to 650 degrees C. And the crystal structure was more perfect at the upper temperature. In addition, the electrochemical properties of LiMn2-yCoyO4 spinels used as cathode material for lithium-ion batteries were studied in detail in this paper.
通过对混合前驱体进行退火制备了阴极材料LiMn₂₋ₓCoₓO₄尖晶石，该混合前驱体是采用低加热固态配位法，以醋酸锂、醋酸锰、醋酸钴和草酸为原料合成的。研究了LiMn₂₋ₓCoₓO₄尖晶石的结构和形貌随退火温度和时间的变化。结果表明，在不同退火温度和时间下的所有样品都具有相同的尖晶石结构。当退火温度从450℃升高到650℃时，颗粒中有一些生长和团聚现象。并且在较高温度下晶体结构更完美。此外，本文还详细研究了LiMn₂₋ₓCoₓO₄尖晶石作为锂离子电池阴极材料的电化学性能。
