| 二氧化钛溶胶制备的掺钛磷酸亚铁锂正极材料 |
| |
| 引用本文： | 黄娟,姜祥祥,韩铭,肖斌,童庆松.二氧化钛溶胶制备的掺钛磷酸亚铁锂正极材料[J].吉林化工学院学报,2013,30(1):39-43. |
| |
| 作者姓名： | 黄娟 姜祥祥 韩铭 肖斌 童庆松 |
| |
| 作者单位： | 福建师范大学化学与化工学院,福建福州,350007 |
| |
| 摘 要： | 采用二氧化钛溶胶作为掺杂剂,经过450℃和750℃两段烧结制备得到橄榄石型结构的掺钛磷酸亚铁锂微米样品.研究表明,在30℃下,采用0.1C、2C和10C倍率电流充放电时,掺钛磷酸亚铁锂第一循环的放电容量分别为136、114和98 mAh·g(-1).掺钛改善磷酸亚铁锂大电流放电性能是由于掺钛引起橄榄石结构的晶胞的收缩而更稳定,导致在电化学体系中掺钛磷酸亚铁锂的电荷传递阻抗减小,锂离子扩散系数明显增大.
|
| 关 键 词： | 正极材料 磷酸亚铁锂 二氧化钛溶胶 可充性 |
Titanium Doped Lithium Iron Phosphate Cathode Material Prepared using a Titanium Dioxide Sol Dopant |
| |
| HUANG Juan
,
JIANG Xiang-xiang
,
HAN Ming
,
XIAO Bin
,
TONG Qing-song.Titanium Doped Lithium Iron Phosphate Cathode Material Prepared using a Titanium Dioxide Sol Dopant[J].Journal of Jilin Institute of Chemical Technology,2013,30(1):39-43. |
| |
| Authors: | HUANG Juan JIANG Xiang-xiang HAN Ming XIAO Bin TONG Qing-song |
| |
| Affiliation: | * (College of Chemistry and Chemical Engineering,Fujian Normal University,Fujian City 350007,China) |
| |
| Abstract: | A titanium doped lithium iron phosphate cathode material with the micrometers size and olivine-type structure prepared by sintered at 450 X.and 750℃and by using a titanium dioxide sol as the dopant. Experimental result shows that the titanium doped lithium iron phosphate exhibits the initial discharge capacitiesof 136 mAhog~(-1)(0.1C rate),114 mAhog-1(2C rate) and 98 mAh ? g~(-1)(10C rate),respectively, at 30℃.The titanium dopant in the lithium iron phosphate stabilizes its structure,decreases the charge transfer impedance and increases the lithium-ion diffusion coefficient than that of undoped sample. |
| |
| Keywords: | cathode materials lithium iron phosphate titanium dioxides sol rechargeability |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
