Electrochemical performance of C-La3+ codoped LiFePO4 synthesized by microwave heating
来源期刊：Rare Metals2009年第2期
论文作者：CUI Yan,WANG Miao,GUO Ruisong,and XU Zhaohe Key Laboratory of the Ministry of Education for Advanced Ceramics and Machining Technology,Tianjin University,Tianjin ,China
文章页码：127 - 131
摘 要：La3+ was selected to elevate the lattice electronic conductivity of LiFePO4,and LiFePO4/（C+La3+） cathode powders were synthesized by microwave heating using a domestic microwave oven for 35 min. The microstructures and morphologies of the synthesized materials were investigated by XRD and SEM. The electrochemical performances were evaluated by galvanostatic charge-discharge. The electrochemical performance of LiFePO4 with different La3+ contents was studied. Results indicated that the initial specific discharge capacity of LiFePO4/（C+La3+） composites with 2% La3+ （116.3 mAh/g） was better than that of LiFePO4/C （105.4 mAh/g）. The addition of La3+ further improved the electrochemical properties. So the codoping is an effective method to improve the electrochemical performance.
摘要：La3+ was selected to elevate the lattice electronic conductivity of LiFePO4,and LiFePO4/（C+La3+） cathode powders were synthesized by microwave heating using a domestic microwave oven for 35 min. The microstructures and morphologies of the synthesized materials were investigated by XRD and SEM. The electrochemical performances were evaluated by galvanostatic charge-discharge. The electrochemical performance of LiFePO4 with different La3+ contents was studied. Results indicated that the initial specific discharge capacity of LiFePO4/（C+La3+） composites with 2% La3+ （116.3 mAh/g） was better than that of LiFePO4/C （105.4 mAh/g）. The addition of La3+ further improved the electrochemical properties. So the codoping is an effective method to improve the electrochemical performance.
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