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Synthesis and Characterization of LiAl1 / 4Ni3 / 4 O 2    (  R 3̄m )  for Lithium‐Ion (Shuttlecock) Batteries

Synthesis and Characterization of LiAl1 / 4Ni3 / 4 O 2    (  R 3̄m )  for Lithium‐Ion... The synthesis and characterization of were carried out in order to improve the electrochemical properties of for lithium ion batteries. Single phase of ( and in hexagonal setting) was obtained by heating a reaction mixture of , , and at 750°C under an oxygen stream for 20 h and examined in nonaqueous lithium cells. was oxidized to in the voltage range of 3.5–4.8 V. X‐ray diffraction examinations of indicated that the reactionproceeded in a single phase over the entire range. The rechargeable capacity was observed to be about 150 mAh · g−1 based on the sample weight. DSC measurements on fully charged and at 4.8 V were also done and the effects of substitution of aluminum for nickel in upon the electrochemical properties were discussed in terms of capacity, failure, and safety coupled with overcharge. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Electrochemical Society IOP Publishing

Synthesis and Characterization of LiAl1 / 4Ni3 / 4 O 2    (  R 3̄m )  for Lithium‐Ion (Shuttlecock) Batteries

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Copyright
Copyright © 1995 ECS - The Electrochemical Society
ISSN
0013-4651
eISSN
1945-7111
DOI
10.1149/1.2048458
Publisher site
See Article on Publisher Site

Abstract

The synthesis and characterization of were carried out in order to improve the electrochemical properties of for lithium ion batteries. Single phase of ( and in hexagonal setting) was obtained by heating a reaction mixture of , , and at 750°C under an oxygen stream for 20 h and examined in nonaqueous lithium cells. was oxidized to in the voltage range of 3.5–4.8 V. X‐ray diffraction examinations of indicated that the reactionproceeded in a single phase over the entire range. The rechargeable capacity was observed to be about 150 mAh · g−1 based on the sample weight. DSC measurements on fully charged and at 4.8 V were also done and the effects of substitution of aluminum for nickel in upon the electrochemical properties were discussed in terms of capacity, failure, and safety coupled with overcharge.

Journal

Journal of the Electrochemical Society – IOP Publishing

Published: Dec 1, 1995

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