The electrochemical stability of spinel electrodes coated with ZrO < inf> 2 , Al < inf> 2 O < inf> 3 , and SiO < inf> 2 from colloidal suspensions

Authors

J. S. Kim, Argonne National Laboratory
C. S. Johnson, Argonne National Laboratory
J. T. Vaughey, Argonne National Laboratory
S. A. Hackney, Michigan Technological University
K. A. Walz, University of Wisconsin-Madison
W. A. Zeltner, University of Wisconsin-Madison
M. A. Anderson, University of Wisconsin-Madison
M. M. Thackeray, Argonne National Laboratory

Document Type

Article

Publication Date

11-26-2004

Abstract

Stoichiometric LiMn2O4 and substituted Li 1.05M0.05Mn1.9O4 (M = Al,Ni) spinel electrodes, coated with ZrO2, Al2O3, and SiO2 from colloidal suspensions, have been evaluated in lithium cells. ZrO2-coated Li1.05Ni0.05Mn 1.9O4 electrodes provide the best cycling stability at 50°C. The excellent cycling stability is attributed to a porous network of amphoteric ZrO2 particles, less than 4 nm in dimension, that protect the spinel surface from acid attack by scavenging HF and H2O from the electrolyte, while still allowing access of the electrolyte to the active electrode. © 2004 The Electrochemical Society. All rights reserved.

Publication Title

Journal of the Electrochemical Society

Recommended Citation

Kim, J., Johnson, C., Vaughey, J., Hackney, S., Walz, K., Zeltner, W., Anderson, M., & Thackeray, M. (2004). The electrochemical stability of spinel electrodes coated with ZrO < inf> 2 , Al < inf> 2 O < inf> 3 , and SiO < inf> 2 from colloidal suspensions. Journal of the Electrochemical Society, 151(10). http://doi.org/10.1149/1.1793713
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/12638