Subramanian, Venkat R., Ping Yu, Branko N. Popov, and Ralph E. White. 2001. “Modeling lithium diffusion in nickel composite graphite”. Journal of Power Sources 96 (2): 396-405.
Abstract
A simple theoretical model is presented to simulate the galvanostatic discharge behavior of the Ni-composite graphite electrode. The discharge profiles predicted by using a constant diffusion coefficient (CDC) and by a varied diffusion coefficient (VDC) are compared in this paper. The results show that, the VDC model can be simplified to the CDC for discharge rates less than 2C for a 5 $μ$m particle. Also, an approximate analytical solution is presented for VDC model, which is found to be valid for discharge rates up to 6C. Exchange current and diffusion coefficient for the lithium-diffusion are predicted. © 2001 Elsevier Science B.V.
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