Layered 2D Electrode Architecture for High-Power Lithium Ion Microbatteries
As the number of layers is increased, the dependence of the electrode morphology on rate performance and cycle life is studied though galvanostatic cycling, cyclic voltammetry, electrochemical impedance spectroscopy and physical characterization techniques such as atomic force microscopy (AFM) and scanning electron microscopy (SEM). Multi-layer electrodes with higher capacity active materials such as the lithium-rich layered nickel-manganese-cobalt oxide will also be fabricated to further increase the capacity per footprint area of the microbattery [1, 2].
Acknowledgment: Financial support for this work was provided by the Department of Defense.
1. Thackeray, M., Kang, SH., Johnson, CS., Vaughey, JT., Benedek, R., and Hackney, SA., Li2MnO3-stabilized LiMO2 (M = Mn, Ni, Co) electrodes for lithium-ion batteries. Journal of Materials Chemistry, 2007. 17: p. 15.
2. W.C. West, J.S., M.C. Smart, B. V. Ratnakumar, S. Firdosy, V. Ravi, M. S. Anderson, J. Hrbacek, E. S. Lee, and A. Manthiram, Electrochemical Behavior of Layered Solid Solution Li2MnO3-LiMO2 (M=Ni, Mn, Co) Li-Ion Cathodes with and without Alumina Coatings. Journal of the Electrochemical Society, 2011. 158: p. 7.