钛掺杂的非化学计量LiFePO_4的合成与电化学性能研究(英文)

作     者：孙玉恒 刘东强 吁霁 刘兴泉 SUN Yu-Heng;LIU Dong-Qiang;YU Ji;LIU Xing-Quan

作者机构：中国科学院成都有机化学研究所 

出 版 物：《无机化学学报》 (Chinese Journal of Inorganic Chemistry)

年 卷 期：2006年第22卷第9期

页      面：1711-1714页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：四川省科技攻关重点项目(No.02GG0980) 中国科学院"西部之光"联合学者项目资助 

主　　题：LiFePO4 电化学性能 钛掺杂 非化学计量 

摘      要：Ti-doped nonstoichiometric LiFePO4, i.e. Li0.95Fe0.95Ti0.05PO4 was synthesized by solid-state reaction method. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM) and electrochemical charge and discharge tests were used to characterize the as-prepared sample. The results indicate that Li0.95Fe0.95Ti0.05PO4 used as the cathode material for lithium-ion battery exhibits improved cyclic stability and rate capability than those of undoped LiFePO4. 150 mAh·g-1 of discharge capacity was achieved at 0.1 C (17 mA ·g-1) at room temperature.