Improvement of Cycling Stability of LiMn_2O_4 Cathode by Al_2O_3 Surface Coating for Li-Ion Batteries

• Authors: H. Şahan , H. Göktepe , F. Kılıç Dokan , A. Aydın , S. Veziroğlu , Ş. Patat
• Languages of publication: EN

Abstracts

EN

The effect of the Al_2O_3 coating on the charge-discharge cycling performance of spinel powder (LiMn_2O_4) was investigated in the range of 3.5-4.5 V at 1C. The Al_2O_3 coating on the surface of the spinel powder was carried out using the solution method, followed by 500C for 6 h in air. Powder X-ray diffraction pattern of the Al_2O_3-coated spinel LiMn_2O_4 showed that the Al_2O_3 coating medium was not incorporated in the spinel bulk structure. Scanning electron microscopy results showed that the Al_2O_3 coating particles were homogeneously distributed on the surface of LiMn_2O_4 powder particles. The Al_2O_3-coated LiMn_2O_4 retained 92.3% of its original capacity after 30 cycles, showing much better cycle ability than the bare lithium manganese oxide. The improvement of electrochemical performance is attributed to suppression of Mn^{2+} dissolution into electrolyte via Al_2O_3 layer.

Keywords

EN

88.80.ff

Discipline

• 88.80.ff: Batteries(for lithium-ion batteries, see 82.47.Aa; for lead-acid, nickel-metal hydride batteries, see 82.47.Cb; see also 88.85.jk, and 88.85.jm in advanced vehicles)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 2
• Pages: 368-370

Dates

published

2013-02

Contributors

author

H. Şahan

• Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey

author

H. Göktepe

• Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey

author

F. Kılıç Dokan

• Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey

author

A. Aydın

• Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey

author

S. Veziroğlu

• Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey

author

Ş. Patat

• Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey

References

• [1] G.G. Amatucci, N. Pereira, T. Zheng, I. Plitz, J.M. Tarascon, J. Power Sources 81-82, 39 (1999)
• [2] M. Hosoya, H. Ikuta, M. Wakihara, Solid State Ionics 111, 153 (1998)
• [3] S. Komaba, K. Oikawa, S.-T. Myung, N. Kumagai, T. Kamiyama, Solid State Ionics 149, 47 (2002)
• [4] H. Şahan, H. Göktepe, Ş. Patat, A. Ülgen, Solid State Ionics 178, 1837 (2008)
• [5] H. Şahan, H. Göktepe, Ş. Patat, A. Ülgen, Solid State Ionics 181, 1437 (2010)
• [6] Y. Zhang, H.C. Shin, J. Dong, M. Liu, Solid State Ionics 171, 25 (2004)
• [7] R.L. Callender, C.J. Harlan, N.M. Shapiro, C.D. Jones, D.L. Callahan, M.R. Wiesner, D.B. MacQueen, R. Cook, A.R. Baron, Chem. Mater. 9, 2418 (1997)

Identifiers

DOI

10.12693/APhysPolA.123.368