Physical and electrochemical properties of doped lithium iron phosphate electrodes
Physical and electrochemical properties of doped lithium iron phosphate electrodes
复制标题
DOI：
10.1016/j.electacta.2004.04.047
复制
发表时间：
2004-11
影响因子：
6.6
通讯作者：
Guoxiu Wang;S. Bewlay;K. Konstantinov;H. Liu;S. Dou;Jung-Ho Ahn
中科院分区：
文献类型：
--
作者：
Guoxiu Wang;S. Bewlay;K. Konstantinov;H. Liu;S. Dou;Jung-Ho Ahn
通过喷雾热解合成化学计量和非化学计量的镁掺杂磷酸铁锂，然后在高温下烧结结晶。喷雾热解过程允许成分反应物在原子水平上均匀混合。与未掺杂的 LiFePO4 相比，掺镁磷酸铁锂的电子电导率大幅提高了 4 个数量级。通过循环伏安法和恒流充放电循环测试系统地测量了所制备的磷酸铁锂的电化学性能。
Stoichiometric and non-stoichiometric Mg-doped lithium iron phosphates were synthesised via spray-pyrolysis, followed by sintering at high temperature for crystallization. The spray pyrolysis process allows the homogeneous mixing of the ingredient reactants at atomic level. The electronic conductivities of the Mg-doped lithium iron phosphates have been drastically improved by 4 orders of magnitude, comparing to the undoped LiFePO4. The electrochemical properties of as-prepared lithium iron phosphates were systematically measured by cyclic voltammetry and constant current charge/discharge cycling tests.