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Amorphous and Nanocrystalline Oxide Electrodes for Rechargeable Lithium Batteries

Published online by Cambridge University Press:  10 February 2011

A. Manthiram ,
J. Kim  and
C. Tsang
A. Manthiram
Affiliation:
Center for Materials Science and Engineering, ETC 9.104, The University of Texas at Austin, Austin, TX 787I2
J. Kim
Affiliation:
Center for Materials Science and Engineering, ETC 9.104, The University of Texas at Austin, Austin, TX 787I2
C. Tsang
Affiliation:
Center for Materials Science and Engineering, ETC 9.104, The University of Texas at Austin, Austin, TX 787I2
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Abstract

Oxo ions (MO4)n- (M = V, Cr, Mn and Mo) have been reduced in aqueous solutions with potassium borohydride to obtain the binary oxides MO2+δ. While the vanadium and manganese oxides are nanocrystalline, the chromium and molybdenum oxides are amorphous. The nanocrystalline VO2 having a metastable structure and the amorphous CrO2 and MoO2.3 transform to the thermodynamically more stable phases upon heating above 300–400 °C. These metastable oxides after heating in vacuum at 200–300 °C to remove water show good electrode performance in lithium cells. VO2, CrO2 and MoO2.3 show a reversible capacity of, respectively, 290 mAh/g in the range 4–1.5 V, 180 mAh/g in the range 3.3–2.3 V, and 220 mAh/g in the range 3–1 V. MnO2 obtained by this process does not show good electrode properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 496: Symposium Y – Materials For Electrochemical Energy Storage & Conversion II… , 1997 , 421
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1. Scrosati, B., Nature 373, 557 (1995).10.1038/373557a0Google Scholar
2. Schlesinger, H. I., Brown, H. C., Finholt, A. E., Gilbreath, J. R., Hoekstra, H. R. and Hyde, E. K., J. Amer. Chem. Soc. 75, 215 (1953).10.1021/ja01097a057Google Scholar
3. Tsang, C., Dananjay, A., Kim, J. and Manthiram, A., Inorg. Chem. 35, 504 (1996).10.1021/ic950955wGoogle Scholar
4. Tsang, C., Kim, J. and Manthiram, A., J. Solid State Chem. (in press).Google Scholar
5. Tsang, C., Kim, J. and Manthiram, A., J. Mat. Chem. (in press).Google Scholar
6. Kim, J. and Manthiram, A., J. Electrochem. Soc. 144, 3077 (1997).10.1149/1.1837962Google Scholar
7. Manthiram, A. and Tsang, C., J. Electrochem. Soc. 143, L143 (1996).10.1149/1.1836955Google Scholar
8. Emeleus, H. J. and Sharpe, A. G., Modern Aspects of Inorganic Chemistry. (John Wiley & Sons, New York, 1973), p. 276.Google Scholar
9. Tsang, C. and Manthiram, A., J. Electrochem. Soc. 144, 520 (1997).10.1149/1.1837442Google Scholar
10. Christian, P. A., DiSalvo, F. J. and Murphy, D. W., US Patent No. 4228226, October 14, 1980.Google Scholar
11. Dahn, J. R., Buurn, T. V. and Von Sacken, U., US Patent No. 4965150, October 23, 1990.Google Scholar
12. Takeda, Y., Kanno, R., Tsuji, Y. and Yamamoto, O., J. Power Sources 9, 325 (1983).10.1016/0378-7753(83)87034-7Google Scholar