以葡萄糖为碳源,采用一种新的碳热还原法制备LiFePO4/C正极材料.采用TG-DTA、XRD、TEM等手段对前驱体及产物进行了表征,研究了碳热还原的反应历程,测试了样品的电化学性能.结果表明,该碳热还原法可以降低煅烧温度. 600℃烧结24h的样品在0.05C下首次放电容量达156mAh.g-1,在0.1、0.2、0.5、1C下首次放电容量分别为146、135、130、121mAh·g-1.该样品在1C下经过30次循环,容量还保持为119mAh·g-1,衰减仅为1.65%.
参考文献
[1] | Padhi A K,Nanjundaswamy K S,Goodenough J B.J.Electrochem.Soc.,1997,144(4):1188-1194. |
[2] | Andersson A S,Kalska B,Haggstrom,et al.Solid State Ionics,2000,130(1-2):41. |
[3] | Yamada A,Chung S C,Hinokuma K.J.Electrochem.Soc.,2001,148(3):A224 229. |
[4] | Huang H,Yin S C,Nazar L F.Electrochem.Solid-State Lett.,2001,4(10):A170-172. |
[5] | Franger S,LeCras F,Bourbon C,et al.J.Power Sources,2003,119-121:252-257. |
[6] | 卢俊彪,唐子龙,张中太(LU Jun-Biao,et al).无机材料学报(Journal of Inorganic Materials),2005,20(3):666-670. |
[7] | Yang S F,Zavalij P Y,Whittingham M S.Electrochemistry Communicatuions.2001.3:505-508. |
[8] | Tajimi S,Ikeda Y,Uematsu K,et al.Solid State Ionics,2004,175:287-290. |
[9] | 张静,刘素琴,黄可龙,等.无机化学学报,2005,21(5):433-436. |
[10] | Jingsi Yang,Xu J.J.Electrochemical and Solid-State Letters,2004,7(12):A515-518. |
[11] | Piana M,Cushing B L,Goodenough J B,et al.Solid State Ionics,Diffusion & Reactions,2004,175(1-4):30. |
[12] | Miran G,Robert D,Marjan B,et al.Solid State Ionics,2005,176(19-22):1801-1805. |
[13] | Park K S,Son J T,Chung H T,et al.Electrochemistry Communications,2003,5:839-842. |
[14] | Park K S,Kang K T,Lee S B,et al.Materials Research Bulletin,2004,39:1803-1810. |
[15] | Arnold G,Garche J,Hemmer R,et al.J.Power Sources,2003,119-121:247-251. |
[16] | Cho T H,Chung H T.J.Power Sources,2004,113:272-276. |
[17] | Myung S T,Komaba S,Hirosaki N,et al.Electrochimica Acta,2004,49:4213-4222. |
[18] | Higuchi M,Katayama K,Azuma Y,et al.J.Power Sources,2003,119-121:258-261. |
[19] | Baker J,Saidi M Y,Swoyer J L.Electrochem.Solid-State Lett,2003,6(3):A53-A55. |
[20] | 徐峙晖,赖琼玉,吉晓洋.四川大学学报(工程科学版),2005,37(4):77-80. |
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