Undergrad researchers Jamie and Andrew, with their mentor Ben.
Having a good glovebox time
PVDF and PEO catholytes in Li batteries
We have a new paper out today on polymer-based all-solid-state batteries, focused on the catholyte. We find that when using PVDF, 10% catholyte is a starved condition. But if you replace a little bit of the PVDF with PEO it helps the interface a lot.
We also find that loading up on catholyte has ~some benefits, but also causes the catholyte to agglomerate and hinder transport.
At ECS in SF
I ran into Professor C.C. Liu at ECS. He was my first chemical engineering professor, at CWRU, sometime in the 20th century.
Drs.
Graduation ceremony for Dr. Ben Howell and Dr. Alyssa Stavola today!
Kinetics of sulfide-NMC batteries
A new paper led by Alyssa Stavola is out today. We study NMC cathodes with an argyrodite sulfide electrolyte. We find *kinetics* are ~13% of the same NMC with a liquid electrolyte, which we attribute to inactive NMC surface area.
We also use micro-XANES and XRF (shown above) to detect reduced Co2+ at the surface of the NMC. The bulk NMC is Co3+. This indicates CoS or Co3S4 at the interface.