以氢氧化锂、硫酸亚铁铵和磷酸氢二铵为原料,研究了液相共沉淀法制备LiFePO4正极材料和掺杂Co2+的LiFePO4改性正极材料,并对其进行XRD、SEM分析和电化学性能测试.结果表明掺杂Co2+对正极材料的初始充电比容量为156.7 mAh·g-1,且循环60次后,容量仍有138.7 mAh·g-1,容量衰减率仅为11.4%.
参考文献
[1] | Yamada A;Chung S C;Hino Kuma K .[J].Journal of the Electrochemical Society,2001,148(03):A224. |
[2] | Prosini P P;Zane D;Pasquali M .[J].Electrochimica Acta,2001,46(23):3517. |
[3] | Huang H;Yin S C;Naz L F .[J].Electrochemical and Solid-State Letters,2001,4(10):A170. |
[4] | Li G;Azuma H;Tohda M .[J].Journal of the Electrochemical Society,2002,149(06):A743. |
[5] | Sylvain Franger;Frederic Le Cras;Carole Bourbon;Helene Rouault .Comparison between different LiFePO_4 synthesis routes and their influence on its physico-chemical properties[J].Journal of Power Sources,2003(119/121):252-257. |
[6] | 施志聪,李晨,杨勇.LiFePO4新型正极材料电化学性能的研究[J].电化学,2003(01):9-14. |
[7] | 杨蓉,赵铭姝,赵青,马红利,宋晓平.锂离子电池正极材料LiFePO4的电化学性能改进[J].化工学报,2006(03):674-677. |
[8] | 倪江峰;苏光耀;周恒辉.[J].Journal of Chemical Industry and |
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