采用二甲亚砜水溶液为反应介质, 在常压和108 ℃条件下, 经短时间的液相反应直接制备出橄榄石结构的纳米级LiFePO₄. IR分析表明, 液相法直接制得的LiFePO₄晶体结构中含有少量的Fe^3＋. 将液相直接制备的样品与少量葡萄糖混合后在600 ℃下焙烧3 h得到类球形的LiFePO₄/C材料. 电化学测试结果表明, 这种纳米级LiFePO₄/C材料在0.2 C 倍率下放电容量达到157.2 mAh/g, 并且具有较好的放电平台. 5 C和10 C放电容量仍能达到126.1和103.4 mAh/g, 且循环200次后容量没有明显衰减, 表现出优异的倍率放电特性和循环性能.

Nanometer-sized LiFePO₄ with a well-developed olivine-type structure was synthesized in the dimethyl sulfoxide (DMSO)/H₂O system under ambient pressure and 108 ℃. From IR analysis, less amount of Fe^3＋ ions were proved to exist in the composite by solution-phased method. The sphere-like LiFePO₄/C nanocomposite was obtained by sintering the mixture of nanometer-sized LiFePO₄ and glucose at 600 ℃ under inert atmosphere for 3 h. The electrochemical tests showed the specific capacity of LiFePO₄/C nanocomposites at discharge rates of 0.2 C was 157.2 mAh/g. A capacity of 126.1 mAh/g at 5 C and 103.4 mAh/g at 10 C was even achievable, with no significant capacity fading after 200 cycles.