2014 Graduate Fellows / Graduate Fellows

Ahmad Eshghinejad

Graduate Student, Mechanical Engineering

Design and Optimization of Three-Dimensional Electrodes for Lithium Ion Batteries

Have you noticed your phone loses its charge sooner when it gets old? This is because your battery capacity decreases over time. One of the reasons is the small cracks you make in your battery by charging and discharging it. But how this happens? In the battery charging and discharging cycle Lithium atoms are going back and forth from one solid electrode (positive or negative) to the other one. Obviously, these atoms need space inside the host electrodes so they push back the host atoms and start tiny cracks which get larger and larger by repeating this process. We are trying to reduce these cracks by making smarter electrode designs and eventually make batteries with higher capacities.

“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