2019 Graduate Fellows

Akshay Subramaniam

Thick, high-capacity electrodes are actively being considered to improve the energy density of lithium-ion batteries for electric vehicles (EVs). Novel architectures have been proposed to mitigate expected ion diffusion limitations during operation. Electrochemical modeling is a useful tool in studying the interplay between such transport processes, and in quantifying the benefits of electrode structuring. To this end, I propose a systematic evaluation using an electrochemical-thermal porous electrode model. I intend to use my modeling expertise to extend classical models, incorporating models for double layer physics, microstructural details, and chemistry-specific phase transitions. This model will then be used to simulate the effect of electrode structuring on different electrode chemistries under different transport regimes and realistic operating conditions, such as EV drive cycles. A secondary objective is development of numerical techniques that enable the computationally tractable inclusion of the proposed refinements. This is expected to hasten the use of extended electrochemical models in real-time control, complementing the model-based Battery Management System (BMS) efforts in the M.A.P.L.E. lab.
Advisor Venkat Subramanian – Chemical Engineering

“Providing clean energy to the inhabitants of our planet is a major challenge to future generations. The University of Washington is to be congratulated for establishing an Institute where faculty and students can work together to tackle the difficult global challenge of energy sustainability.”
– Mildred Dresselhaus, Professor of Physics and Electrical Engineering, Emerita and Institute Professor, Massachusetts Institute of Technology
“Energy competition is opening up in a variety of ways, the push for carbon control will continue, and the rate of technology advancement is exponential. All the things I’ve seen at the CEI are just perfect for the way we see things going in energy. You guys are at the cutting edge. We’re counting on you.”
– Ronald Litzinger, President, Edison Energy