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V2O5-P2O5-Fe2O3-Li2O Glass-Ceramics as High-Capacity Cathode for Lithium-Ion Batteries

Published online by Cambridge University Press:  25 February 2014

Takuya Aoyagi ,
Tadashi Fujieda ,
Kazutaka Mitsuishi ,
Jun Kawaji ,
Tatsuya Toyama ,
Kazushige Kono  and
Takashi Naito
Takuya Aoyagi
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Tadashi Fujieda
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Kazutaka Mitsuishi
Affiliation:
National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
Jun Kawaji
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Tatsuya Toyama
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Kazushige Kono
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Takashi Naito
Affiliation:
Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
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Abstract

We discuss the advantages of V2O5-P2O5-Fe2O3-Li2O glass-ceramics as a cathode for lithium-ion batteries. The glass was prepared by using the melt quenching method. The glass-ceramics were produced by heat treatment in air. LixV2O5 crystal was only confirmed as the precipitated phase and the degree of crystallinity was approximately 90%. The total capacity of the glass-ceramics was 340 Ah/kg at a C/20 rate for 1.5-4.2 V cutoff ranges. It is 10% higher than the capacity of the glass cathode. Moreover, the charge-discharge performance of the glass-ceramics cathode showed good cycleability similar to that of the glass. The glass-ceramics had a 83% capacity retention after 40 cycles. These results show that glass-ceramics is a potential candidate for lithium-ion cathode materials.

Keywords

oxideVcomposite
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1643: Symposium CC – Advanced Materials for Rechargeable Batteries , 2014 , mrsf13-1643-cc06-28
Copyright
Copyright © Materials Research Society 2014 

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