Preparation and Characterization of LiFePO4/C as Cathode Material for Lithium Ion Batteries

Abstract

Abstract: LiFePO₄/C composite cathode materials for lithium-ion battery were synthesized by sol-gel method, and characterized by element analysis,X-ray diffraction (XRD), scanning electron microscopy (SEM). The electrochemical properties were tested using analogous cells. Results showed that LiFePO₄/C were simple pure olive-type phase with uniform particle size of 1μm. LiFePO₄/C showed a good charge-discharge voltage plateau at 3.4 V and higher capacity and better cyclability compared with LiFePO₄.The first specific discharge capacities were 133 mAh/g, and 93.8% of which retained after 20 times cycling at 60 ℃.

Key words: Li-ion batteries, cathode materials, lithium iron phosphate, composites

MA Ming-You. Preparation and Characterization of LiFePO₄/C as Cathode Material for Lithium Ion Batteries[J]. journal6, 2004, 25(3): 64-67.

References

[1] YAMADA A,CHUNG S C,HINOKUMA K.Optimized LiFePO4 for Lithium Battery Cathodes[J]. J.Electrochem.Soc.,2001,148(3):A224-A229.

[2] HUANG H,YIN S C,NAZAR L F.Approaching Theoretical Capacity of LiFePO4 at Room Temperature at High Rates[J]. Electrochemical and Solid-State Letters,2001,4(10):A170-A172.

[3] PROSINI P P,ZANE P,PASQUALI M.Impoved Electrochemical Performance of a LiFePO4-Based Composite Cathode[J].Electrochimica Acta，2001,46:3517-3523.

[4] CROCE F,EPIFANIO A D,HASSOUM J,et al.A Novel Concept for the Synthesis of an Improved LiFePO4 Lithium Battery Cathode[J].Electrochem and Solid State Lett.,2002,5(3):A 47-A50.

[5] LI G H,AZUMA H,TOHDA M.Optimized LiMnyFe1-yPO4 as the Cathode for Lithium Batteries[J]. J.Electrochem.Soc.,2002,149(6):A743-A747.

[6] 吕正中,周震涛.LiFePO4/C复合正极材料的结构与性能[J].电池，2003,33(5):269-271.

[7] ANDERSSON A S,KALSKA B,HAGGSTROM L,et al.Lithium Extraction/Insertion in LiFePO4: an X-Ray Diffraction and Mossbauer Spextroscopy Study [J].Solid State Ionics，2000,130:41-52.

[8] MYUNG S T,KOMABA S I,TAKAGAI R,et al.Emulsion Drying Preparation of LiFePO4/C Composite and Its Enhanced High-Rate Performance at 50 ℃[J].Chemistry Letters，2003,32(7):566-567.

[9] PADHI A K,NANJUNDASWAMY K S,GOODENOUGH J B.Phospho-Olivines as Positive-Electrode Materials for Rechargeable Lithium Batteries[J]. Electrochem Soc.,1997,144(4):1 188-1 194.

[10] TAKAHASHI M,TOBISHIMA S I,TAKEI K,et al.Characterization of LiFePO4 as the Cathode Material for Rechargeable Lithium Batteries[J].Journal of Power Sourcs，2001,97-98:508-511.

[11] TAKAHASHI M,TOBISHIMA S I,TAKEI K,et al. Reaction Behavior of LiFePO4 as a Cathode Material for Rechargeable Lithium Batteries[J].Solid State Ionics，2002,148:283-289.

[12] ANDERSSON A S,THOMAS J O,KALSKA B,et al. Thermal Stability of LiFePO4 Cathodes[J]. Electrochemical Solid-State Lett.,2000,3:66-68.

Preparation and Characterization of LiFePO₄/C as Cathode Material for Lithium Ion Batteries

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 2

Recommended Articles

Metrics

Comments

[1]	YANG Ping, LIU Sijia, WAN Chaoyi, LIU Jiale, CAO Jing, JIANG Jianbo. Preparation of MnO₂/CNTs Composites and the Electrochemical Performances as Cathode Materials for ARZIBs [J]. Journal of Jishou University(Natural Sciences Edition), 2023, 44(1): 34-43.
[2]	LIU Saiqiu, JIANG Youliang, ZOU Qiuling, MA Boran, XIANG Yanhong, WU Jianghua, XIONG Lizhi, WU Xianwen. Preparation of Li₃V₂(PO₄)₃/C Composite Material Using Acetylene Black as Carbon Source [J]. Journal of Jishou University(Natural Sciences Edition), 2021, 42(3): 73-78.