High voltage spinel LiNi0.5Mn1.5O4 is a very promising cathode material for lithium ion batteries that can be used to power hybrid electrical vehicles (HEVs). In an effort to maximize the performances of high voltage spinel, it is found that the presence of an appropriate amount of oxygen deficiency and/or Mn3+ is critical to accelerate the transport of Li+ ions within the crystalline structure. Through careful control of the cooling rates after high temperature calcination, LiNi0.5Mn1.5O4 spinels with different disordered phase and/or Mn3+ contents have been synthesized. It is revealed that during slow cooling process (
Revised: January 18, 2013 |
Published: October 31, 2012
Citation
Zheng J., J. Xiao, X. Yu, L. Kovarik, M. Gu, F. Omenya, and X. Chen, et al. 2012.Enhanced Li+ ion transport in LiNi0.5Mn1.5O4 through Control of Site Disorder.Physical Chemistry Chemical Physics. PCCP 14, no. 39:13515-13521.PNNL-SA-88177.