princeton lab for electrochemical engineering systems research

The Princeton Lab for Electrochemical Energy Systems studies complex electrochemical behavior, with a current focus on energy storage systems. We are set up to create materials, fabricate devices, and characterize both with in situ, in operando, and ex situ methods

We consider not only the engineered electrochemically active material, but the context of the material. For example, more than 90% of electrochemical storage cells (batteries) contain printed or slurry cast components. Printing processes decouple materials synthesis and device fabrication, and allow for high throughput continuous manufacturing. This decoupling has allowed researchers to improve the materials used in all electrochemical cells and enabled the batteries we rely on a daily basis to be small, reliable and affordable.

However, the relationship between the processing of printed electrodes and cell performance is poorly understood at a fundamental level. Printed electrodes, at the microscale/nanoscale, are a collection of packed particles bound typically by a polymeric matrix. Intimate contact between the active particles are critical for power performance, so industries simply "squeeze and can" these electrodes to improve power performance. As applications begin to require mechanical flexibility and longer cycle life, the standard calendaring (or compression) batteries undergo may be detrimental in the long term.

We have created an environment where we can quickly synthesize, print, test, and analyze battery electrodes. With our custom fabrication equipment, microfluidic fabrication and testing equipment, and in-lab prototyping tools we can quickly iterate on designs and experiments, starting with a "shotgun" approach to complex problems and developing both variable spaces and hypotheses of interaction after a few design cycles. In practice, we have learned

Taken together, these findings have enabled new types of batteries for grid scale and wearable applications, as well as new diagnostic measures for batteries.

The PLEES is part of the Andlinger Center for Energy and the Environment and the Department of Mechanical and Aerospace Engineering.

(we're just warming up)

The lab's tooling and characterization equipment enables research and training for

The lab is currently supported by the generosity of

Professor Steingart is grateful for previous support and guidance from