Abstract
In this paper, hydrothermal method was conducted to synthesize LiFePO4 raw material. Carbon and TiO2 hybrid coating was prepared on the surface of LiFePO4 through sol–gel method, the tiny TiO2 particles were dispersed homogeneously on the surface and its size is about 2–4 nm. The rate performance testing proved that appropriate content TiO2 in the hybrid coating could obviously improve the rate performance of LiFePO4. The samples with 0.2 wt% (nominal) TiO2 particles in the hybrid coating owned the optimal rate performance at 0.5C, 1C, 3C and 5C, respectively. The reason was that TiO2 particles enlarged the interface in coating layer. This hybrid structure can provide more reaction sites for Li+ ion insertion/extraction. Another advantage of this carbon and TiO2 hybrid coating is that it does not need to strictly limit the content of carbon in the coating, which is very useful for scale production of carbon coating process for LiFePO4.
Similar content being viewed by others
References
Padhi AK, Nanjundaswahi KS, Goodenough JB (1997) Phospho-olivines as positive-electrode materials for rechargeable lithium batteries. J Electrochem Soc 144:1188–1194. doi:10.1149/1.1837571
Yonemura M, Yamada A, Takei Y, Sonoyama N, Kanno R (2004) Comparative kinetic study of olivine LixMPO4(M = Fe, Mn). J Electrochem Soc 151:A1352–A1356. doi:10.1149/1.1773731
Morgan D, Van der Ven A, Ceder G (2004) Li conductivity in LixMPO4 (M = Mn, Fe Co, Ni) olivine materials. Electrochem Solid-State Lett 7:A30–A32. doi:10.1149/1.1633511
Bewlay SL, Konstontinov K, Wang GX, Dou SX, Liu HK (2004) Conductivity improvements to spray-produced LiFePO4 by addition of a carbon source. Mater Lett 58:1788–1791. doi:10.1016/j.matlet.2003.11.008
Li L, Li X, Wang Z, Wu L, Zheng J, Guo H (2009) Stable cycle-life properties of Ti-doped LiFePO4 compounds synthesized by co-precipitation and normal temperature reduction method. J Phys Chem Sol 70:238–242. doi:10.1016/j.jpcs.2008.10.012
Cui Y, Zhao X, Guo R (2010) Enhanced electrochemical properties of LiFePO4 cathode material by CuO and carbon co-coating. J Alloys Compd 490:236–240. doi:10.1016/j.jallcom.2009.09.165
Zhao SX, Ding H, Wang YC, Li BH, Nan CW (2013) Improving rate performance of LiFePO4 cathode materials by hybrid coating of nano-Li3PO4 and carbon. J Alloys Compd 566:206–211. doi:10.1016/j.jallcom.2013.03.041
Huang H, Yin SC, Nazar LF (2001) Approaching theoretical capacity of LiFePO4 at room temperature at high rates. Electrochem Solid-State Lett 4:A170–A172. doi:10.1149/1.1396695
Mi CH, Cao GS, Zhao XB (2005) Low-cost one-step process for synthesis of carbon-coated LiFePO4 cathode. Mater Lett 59:127–130. doi:10.1016/j.matlet.2004.07.051
Yun NJ, Ha HW, Jeong KH, Park HY, Kim K (2006) Synthesis and electrochemical properties of olivine-type LiFePO4/C composite cathode material prepared from a poly(vinyl alcohol)-containing precursor. J Power Sources 160:1361–1368. doi:10.1016/j.jpowsour.2006.02.097
Dominko R, Bele M, Gaberscek M, Remskar M, Hanzel D, Pejovnik S, Jamnik J (2005) Impact of the carbon coating thickness on the electrochemical performance of LiFePO4/C composites. J Electrochem Soc 152:A607–A610. doi:10.1149/1.1860492
Chung SY, Bloking JT, Chiang YM (2002) Electronically conductive phospho-olivines as lithium storage electrodes. Nat Mater 1:123–128. doi:10.1038/nmat732
Cho YD, Fey GT, Kao HM (2009) The effect of carbon coating thickness on the capacity of LiFePO4/C composite cathodes. J Power Sources 189:256–262. doi:10.1016/j.jpowsour.2008.09.053
Geng WT (2013) Carbon coating of LiFePO4 can be strengthened by Sc and Ti. J Phys Chem C 117:276–279. doi:10.1021/jp308903v
Yang XL, Peng G, Zhang LL, Liang G, Duan S, Huang YH, Ignatov A, Croft MC (2012) Enhanced electrochemical performance of LiFePO4 cathode material promoted by CdO and carbon co-coating. J Electrochem Soc 159:A2096–A2099. doi:10.1149/2.014301jes
Ma Z, Peng Y, Wang G, Fan Y, Song J, Liu T, Qin X, Shao G (2015) Enhancement of electrochemical performance for LiFePO4 cathodes via hybrid coating with electron conductor carbon and lithium ion conductor LaPO4. Electrochim Acta 156:77–85. doi:10.1016/j.electacta.2015.01.015
Yin Y, Li X, Mao X, Ding X, Yang S (2013) Solid state reaction preparation of LiFePO4/(C+Cu) cathode material and its electrochemical performance. J Mater Sci Technol 29:937–942. doi:10.1016/j.jmst.2013.06.004
Liu S, Yin H, Wang H, He J, Wang H (2014) Synthesis characterization and electrochemical performances of MoO2 and carbon co-coated LiFePO4 cathode materials. Ceram Int 40:3325–3331. doi:10.1016/j.ceramint.2013.09.102
Hibinoa M, Abe K, Mochizuki M, Miyayama M (2004) Amorphous titanium oxide electrode for high-rate discharge and charge. J Power Sources 126:139–143. doi:10.1016/j.jpowsour.2003.08.025
Kim HS, Yu SH, Sung YE, Kang SH (2014) Carbon treated self-ordered TiO2 nanotube arrays with enhanced lithium-ion intercalation performance. J Alloys Compd 597:275–281. doi:10.1016/j.jallcom.2014.02.013
Wu Q, Tran T, Lu W, Wu J (2014) Electrospun silicon/carbon/titanium oxide composite nanofibers for lithium ion batteries. J Power Sources 258:39–45. doi:10.1016/j.jpowsour.2014.02.047
Prosini PP, Cento C, Pozio A (2014) Lithium-ion batteries based on titanium oxide nanotubes and LiFePO4. J Solid State Electrochem 18:795–804. doi:10.1007/s10008-013-2324-8
Zhang J, Zhang L, Zhang J, Zhang Z, Wu Z (2015) Effect of surface/bulk oxygen vacancies on the structure and electrochemical performance of TiO2 nanoparticles. J Alloys Compd 642:28–33. doi:10.1016/j.jallcom.2015.04.096
Chang HH, Chang CC, Su CY, Wu HC, Yang MH, Wu NL (2008) Effects of TiO2 coating on high-temperature cycle performance of LiFePO4-based lithium-ion batteries. J Power Sources 185:466–472. doi:10.1016/j.jpowsour.2008.07.021
Li XP, Mao J (2015) A Li4Ti5O12–rutile TiO2 nanocomposite with an excellent high rate cycling stability for lithium ion batteries. New J Chem 39:4430–4436. doi:10.1039/c5nj00306g
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Electronic supplementary material
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Xu, Y., Mao, J. Enhanced electrochemical performance of LiFePO4 cathode with carbon-TiO2 hybrid coating. J Mater Sci 51, 10026–10034 (2016). https://doi.org/10.1007/s10853-016-0229-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-016-0229-5