Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-28T08:43:23.519Z Has data issue: false hasContentIssue false
  • English
  • Français

Preparation of cathode active materials for lithium ion secondary batteries utilizing microwave irradiation: Part II. Electronic structure of lithium manganese oxide

Published online by Cambridge University Press:  03 March 2011

Shota Kobayashi ,
Tatsuya Usui ,
Hiromasa Ikuta ,
Yoshiharu Uchimoto  and
Masataka Wakihara
Shota Kobayashi
Affiliation:
Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Tatsuya Usui
Affiliation:
Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Hiromasa Ikuta
Affiliation:
Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Yoshiharu Uchimoto
Affiliation:
Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Masataka Wakihara*
Affiliation:
Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

The microwave irradiation technique (MWIT) was applied to synthesize lithium manganese oxide having spinel structure using LiOH·H2O and ε–MnO2 as starting materials. The crystal and electronic structure depends on the irradiation time; x-ray diffraction patterns of the sample irradiated for 9 min were in good agreement with that of cubic structure without showing the peak of MnO2. The electronic structure of synthesized samples before and after lithium ion intercalation and/or deintercalation was investigated by Mn L-edge and O K-edge x-ray absorption spectroscopy.

Keywords

Electronic structureIntercalatedMicrowave heating
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 8 , August 2004 , pp. 2421 - 2427
Copyright
Copyright © Materials Research Society 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Bruce, P.G.: Solid-state chemistry of lithium power sources. Chem. Commun. 19, 1817 (1997).CrossRefGoogle Scholar
2.Nishi, Y.: Lithium ion secondary batteries; past 10 years and the future. J. Power Sources 100, 101 (2001).CrossRefGoogle Scholar
3.Thackeray, M.M.: Manganese oxides for lithium batteries. Prog. Solid State Chem. 25, 1 (1997).CrossRefGoogle Scholar
4.Thackeray, M.M.: Spinel electrodes for lithium batteries. J. Am. Ceram. Soc. 82, 3347 (1999).CrossRefGoogle Scholar
5.Rao, K.J., Vaidhyanathan, B., Ganguli, M. and Ramakrishnan, P.A.: Synthesis of inorganic solid using microwaves. Chem. Mater. 11, 882 (1999).CrossRefGoogle Scholar
6.Michael, D., Mingos, P. and Baghurst, D.R.: Application of microwave heating techniques for the synthesis of solid state inorganic compounds. J. Chem. Soc. Chem. Commun. 12, 829 (1988).Google Scholar
7.Clark, D.E., Folz, D.C. and West, J.K.Processing materials with microwave energy. Mater. Sci. Eng. A 287, 153 (2000).CrossRefGoogle Scholar
8.Yan, H., Huang, X., Lu, Z., Huang, H., Xue, R. and Chen, L.: Microwave synthesis of LiCoO2 cathode materials. J. Power Sources 68, 530 (1997).CrossRefGoogle Scholar
9.Yan, H., Huang, X., Li, H. and Chen, L.: Electrochemical study on LiCoO2 synthesized by microwave energy. Solid State Ionics 113–115, 11 (1998).CrossRefGoogle Scholar
10.Yan, H., Huang, X. and Chen, L.: Microwave synthesis of LiMn2O4 cathode material. J. Power Sources 81–82, 647 (1999).CrossRefGoogle Scholar
11.Whitfield, P.S. and Davidson, I.J.: Microwave synthesis of Li1.025Mn1.975O4 and Li1+xMn2-xO4-yFy (x = 0.05, 0.15; y = 0.05, 0.1). J. Electrochem. Soc. 147, 4476 (2000).CrossRefGoogle Scholar
12.Kobayashi, S., Usui, T., Ikuta, H., Uchimoto, Y. and Wakihara, M.: Soft x-ray absorption near edge structure analysis on lithium manganese oxide prepared by microwave heating. J. Am. Ceram. Soc. (in press).Google Scholar
13. JCPDS Powder Diffraction File Card Number 30-0820 (International Center for Diffraction Data, Newtown Square, PA, 2000).Google Scholar
14.Kawai, J., Mizutani, Y., Sugimura, T., Sai, M., Higuchi, T., Harada, Y., Ishiwata, Y., Fukushima, A., Fujisawa, M., Watanabe, M., Maeda, K., Shin, S., and Gohshi, Y.: High resolution soft x-ray absorption spectroscopy for the chemical state analysis of Mn. Spectrochim. Acta, Part B 55, 1385 (2000).CrossRefGoogle Scholar
15.Gao, Y. and Dahn, J.R.: The high temperature phase diagram of Li1+xMn2-xO4 and its implications. J. Electrochem. Soc. 143, 1783 (1996).CrossRefGoogle Scholar
16.Swain, B.Microwave sintering of ceramics. Adv. Mater. Processes 134, 76 (1989).Google Scholar
17.de Groot, F.M.F., Grioni, M., Fuggle, J.C., Ghijsen, J., Sawatzky, G.A. and Petersen, H.: Oxygen 1s x-ray-absorption edges of transition-metal oxides. Phys. Rev. B 40, 5715 (1989).CrossRefGoogle Scholar
18.Abbate, M., de Groot, F.M.F., Fuggle, J.C., Fujimori, A., Strebel, O., Lopez, F., Domke, M., Kaindl, G., Sawatzky, G.A., Takano, M., Takeda, Y., Eisaki, H. and Uchida, S.: Controlled-valence properties of La1-xSrxFeO3 and La1-xSrxMnO3 studied by soft-x-ray absorption spectroscopy. Phys. Rev. B 46, 4511 (1992).CrossRefGoogle ScholarPubMed
19.Uchimoto, Y., Sawada, H. and Yao, T.: Changes in electronic structure by Li ion deintercalation in LiCoO2 from cobalt L-edge and oxygen K-edge XANES. J. Synchrotron. Rad. 8, 872 (2001).CrossRefGoogle Scholar
20.Uchimoto, Y., Sawada, H. and Yao, T.: Changes in electronic structure by Li ion deintercalation in LiNiO2 from nickel L-edge and oxygen K-edge XANES. J. Power Sources 97–98, 326 (2001).CrossRefGoogle Scholar
21.Aydinol, M.K. and Ceder, G.: First-principles prediction of insertion potentials in Li-Mn oxides for secondary Li batteries. J. Electrochem. Soc. 144, 3832 (1997).CrossRefGoogle Scholar