摘要
用柠檬酸配位聚合法合成了 Li Al0 .3Co0 .7-x Mgx O2 (x=0 .0 1～ 0 .1 3 )粉体 ,并进行了 X射线衍射 (XRD)和透射电子显微镜 (TEM)的表征 .结果发现晶粒粒径都小于 1 μm,且在 x≤ 0 .1 1的范围内 ,材料的 XRD谱峰形锐利 ,表明 80 0℃下材料有良好的结晶性 ,通过对几组衍射峰的标定 ,确定材料保持了六方层状α-Na Fe O2 结构 。
A series of LiAl_ 0.3Co_ 0.7-xMg_xO_2(x=0.01-0.13) powders were synthesized and characterized by XRD and TEM measurements. The results show that the crystal size is under 1 μm. When x≤0.11, the peaks in the XRD patterns are very sharp which indicate that the materials are well crystallized. After indexing the peaks, it was confirmed that the materials formed an α-NaFeO_2 structure which ensured the lithium ions pass fluently during the charge-discharge process.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第3期462-464,共3页
Chemical Journal of Chinese Universities
基金
教育部博士学科点基金 (批准号 :2 0 0 10 1830 31)
国家自然科学基金 (批准号 :5 0 2 72 0 2 3)资助
