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LiAl y Co1 − y  O 2  (  R 3̄m )  Intercalation Cathode for Rechargeable Lithium Batteries

LiAl y Co1 − y  O 2  (  R 3̄m )  Intercalation Cathode for Rechargeable Lithium Batteries solid solutions of structure type have been synthesized from homogeneous hydroxide precursors. X‐ray powder diffraction and scanning transmission electron microscopy show that single‐phase solid solutions are formed up to y ≈ 0.5 at 800°C in air. Electrochemical tests using nonaqueous liquid electrolyte cells shows that the open‐circuit voltage and working voltage increase with Al content as predicted by ab initio calculations [Ceder et al., Nature, 392, 694 (1998)], while capacity fade was significant during cycling at room temperature. However, both the absolute capacity and cycleability were improved at 55°C. © 1999 The Electrochemical Society. All rights reserved. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Electrochemical Society IOP Publishing

LiAl y Co1 − y  O 2  (  R 3̄m )  Intercalation Cathode for Rechargeable Lithium Batteries

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Copyright
Copyright © 1999 ECS - The Electrochemical Society
ISSN
0013-4651
eISSN
1945-7111
DOI
10.1149/1.1391693
Publisher site
See Article on Publisher Site

Abstract

solid solutions of structure type have been synthesized from homogeneous hydroxide precursors. X‐ray powder diffraction and scanning transmission electron microscopy show that single‐phase solid solutions are formed up to y ≈ 0.5 at 800°C in air. Electrochemical tests using nonaqueous liquid electrolyte cells shows that the open‐circuit voltage and working voltage increase with Al content as predicted by ab initio calculations [Ceder et al., Nature, 392, 694 (1998)], while capacity fade was significant during cycling at room temperature. However, both the absolute capacity and cycleability were improved at 55°C. © 1999 The Electrochemical Society. All rights reserved.

Journal

Journal of the Electrochemical Society – IOP Publishing

Published: Mar 1, 1999

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