(Invited) Simulation Studies of Multilayer Electrode Coatings

The use of extrusion coating for lithium-ion battery electrodes enables the practical possibility of using multilayer coatings to improve battery performance.  The use of multilayer coatings of different materials, for example, a LiFePO₄ coating next to a LiCoO₂ coating, or a NMC coating next to a LiMn₂O₄ coating, has been experimentally tested in the literature [1-2] and modeling approaches [3-4] to optimize multilayer coatings presented.  In this presentation simulation results the effect segregating particles into discrete layers are presented for both high power and high energy cells.

References

1. J.F. Whitacre, K. Zaghib, W.C. West, B.V. Ratnakumar “Dual active material composite cathode structures for Li-ion batteries”, J. Power Sources 177 (2008) 528–536.
2. W.B. Chu, D-J. Liu, C.C. Chen. L.-C. Chen, S.-T. Tseng, S.H. Wen, C.R. Yang, U. S. Patent Application US 2014/0162118 A1, Jun. 12, 2014 “Electrode Structure of Lithium Ion Battery”.
3. V. Ramadesigan, R.N. Methekar, F. Latinwo, R.D. Braatz, V.R. Subramanian, “Optimal Porosity Distribution for Minmized Ohmic Drop across a Porous Electrode”, J. Electrochem. Soc. 157 (12) A1328-A1334 (2010).
4. S. Golmon,  K. Maute, M. Dunn, “A design optimization methodology for Li+ batteries” J. Power Sources 253 (2014) 239-250