We study, design, build, destroy and generally tinker with electrochemical systems, mostly batteries but also metal production systems. Our research is typically between the cracks of materials science and systems engineering, studying how chemistry, electronics, and mechanics interact at various scales in an electrochemical reactor as a function of its purpose.
Living Forever by Dying Everyday
Does a battery have to die when it short circuits?
Starting with the hoary zinc-bromide system, we have demonstrated that a balanced system can survive and thrive if the thermodynamics, kinetics, and mass transport are optimized not only for the primary reaction (i.e. energy storage), but for the self discharge reaction as well.
Full of Sound and Fury, Signifying Something
If a battery falls in the woods, does it make a sound?
Surprisingly the answer is yes, and if one listens carefully one can discern multiple states of the battery (charge, power, health, safety), as well as characterize composition, structure and phase components within the cell. We have shown with strong confidence that the proper interpretation of the sound speed changes within a battery have to correlate with key aspects of battery behavior.
We are working with other academics and industry to improve our understanding of acoustic/electrochemical coupling while working to make batteries better.
It also explains why dead batteries bounce.
What's After Lithium Ion?
Heck if we know. A lot of people think it's lithium metal, so we've spent some time studying how the most reducing element in the periodic table behaves in various context and settings. As you might expect, it does not behave well. But in examining lithium's behavior in both good (e.g. we want a lithium anode to work) and bad (e.g. we do not want lithium metal to exist in a lithium-ion battery), we've gained some new insights into behaviors. More to come.
And So Forth
In the past we have worked on Zn-MnO2 systems (super hard to stabilize but heaven holds a place for they whom can), flexible batteries (but no one could tell us what they were really useful for so we stopped). We also spend a fair amount of time building internal software and hardware to enable all of the fun things, and the building is fun as well.
To What End?
Thus far the group has graduated 10 PhD students, 6 MS students, and has served as a home to many fantastic post-doctoral researchers and undergraduate students. Our alumni have started based on research and software created in the lab, and a few more are probably in the works. Our alums find themselves in exciting positions at big companies, small companies, and excellent universities.
Where Are You?
How Do You Do What You Do?
With very generous support from federal and industrial sponsors. Current sponsors include DOE ARPA-E, DOT, NSF, Mercedes Benz Research and Development North America, General Motors and ICL. Previous sponsors included BP, ExxonMobil, AlphaEn, Princeton University and NASA. Our experimental programs were enabled by financial support from and facilities from the City University of New York, Princeton University, and now Columbia University.
Do you want to work on the things above? Please reach out before applying. Graduate studies are not like undergraduate studies. Faculty directly review graduate school applications (this lab is affiliated with and ). Faculty are also directly responsible for paying your tuition and stipend (yes, you get paid to get a PhD, not very much but hey, we're trying). So reaching out directly to is a great way to let us know you're interested, and it is immensely helpful for our budgeting. Note that the stipend and benefits are determined by .
We Are Interested InYou
We do what we do to make the world a little closer to a technology enabled , and we cannot do it without proper representation from everyone that would benefit from and live in such a world. This means you. We welcome and celebrate all backgrounds and self-identifications, and strive to nurture an internal culture of diversity, inclusion, equity, respect and understanding. We cannot do what we do without understanding the needs of the world, and we cannot understand the needs of the world without maximum representation.
Get it touch!