【摘 要】
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Li1-xNaxFePO4 (X =0,0.01 or 0.05) composite cathode materials were synthesized by the simple solvothermal method.SEM images showed that Na doping had little eff
【机 构】
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School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai,200235,China
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Li1-xNaxFePO4 (X =0,0.01 or 0.05) composite cathode materials were synthesized by the simple solvothermal method.SEM images showed that Na doping had little effect on the morphology of particles,which provided a guarantee for its excellent electrochemical performance.Charge/discharge data revealed that an appropriate amount of doped Na could improve electrochemical performance.Li0.99Na0.01FePO4 showed excellent rate ca-pacity and cycle stability,i.e.,an extremely high keep in the capacity of 86.7％ after 500 cycles at 10C,due to its ac facet morphology,larger lattice parameters in a and c,the enhanced electronic conductivity and Li-ion diffusion processes.
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