Updates on lab news and research in polymer physics and lithium batteries
Berkeley, CA
Joined April 2016
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thank you @advlightsource @BerkeleyLab for highlighting @Alec_Ho_ ‘s recent work on the shadow effect in electrodes under fast charging conditions! Check out the interview with Nitash: als.lbl.gov/3d-view-reveals-…
Balsara Lab retweeted
Scientists using neutrons set the first benchmark (one nanosecond) for a polymer-electrolyte and lithium-salt mixture. Findings could boost power and safety for lithium batteries! bit.ly/3Jlwwc8
Balsara Lab retweeted
Solvation dynamics affect charge transport, but conflicting values are reported for organic electrolytes. Here, lifetimes of order 1 ns for organic polymer/lithium salt mixtures with ultraslow solvation shell break-up dynamics are now reported. @BalsaraLab go.nature.com/3T750U3
In Neel’s final PhD paper, he used QENS to measure the solvation lifetime of a lithium ion in a polymer electrolyte. Chao Fang reproduced these results using MD to provide a direct measurement of solvation dynamics in an electrolyte! #QENS #ORNL #LBL
nature.com/articles/s41563-0…
In Emily's first paper with the Balsara lab she used in situ SAXS and X-ray transmission to track phase transitions and map salt concentration gradients in a solid block copolymer electrolyte - check it out here: pubs.acs.org/doi/full/10.102…
Another paper from Zach! He measured the Sand's time of polymer electrolytes and compared it to predictions from concentrated solution theory and found they match qualitatively. He also derived a general analytical expression for Sand's time
Link here:
iopscience.iop.org/article/1…
Cool paper out from Alec - using X-ray microtomography he measured the ionic current densities with high spatial resolution in a battery at rest. Important takeaway - even at rest there can be extremely large local current densities from lithium plating.
pubs.acs.org/doi/full/10.102…
In new work from Zach, he used Raman Spectroscopy to measure the salt concentration profiles in polymer electrolytes. The measured profiles agree qualitatively with the theoretical profiles from concentrated solution theory.
Read it here: iopscience.iop.org/article/1…
Another new paper from Saheli and Chao combined WAXS and MD to identify how the solvation cage of lithium changes between two polymer electrolytes. Interestingly, the anion is only involved in the solvation cage in one of them.
Read it here: pubs.acs.org/doi/full/10.102…
Jackie's final paper from the Balsara group is now out - she used time-resolved X-ray tomography to study lithium protrusions. Cool application - see how different factors influence local rates of the electrochemical reaction in the cells. Here's the link: iopscience.iop.org/article/1…
Lots of updates with new papers - first up we have recent work from Saheli looking at lithium transference in star-shaped multivalent anions and found that slow self-diffusion of bulky anions doesn't necessarily improve lithium transference. Read it here: pubs.rsc.org/en/content/arti…
Balsara Lab retweeted
So proud of my friend and @Solid_Battery co-founder, Nitash Balsara, @BalsaraLab, at @UCBerkeley. Important read: Why Do Batteries Sometimes Catch Fire and Explode? – Berkeley Lab News Center newscenter.lbl.gov/2023/11/0…
Balsara Lab retweeted
Don't miss this podcast featuring Berkeley Chemistry PhD alum (@BalsaraLab) and UW–Madison assistant professor Whitney Loo!
🎙️ NEW EPISODE: Join us as we sit down with Whitney Loo, assistant professor @uwmadengr! Sustainable polymers. New lab problems. And the power of asking questions. Don't miss this episode! Tune in anywhere you find podcasts: buff.ly/3PnJKcu
Great work @MorganSeidler !
Balsara Lab retweeted
Check out this new article @FrontChemistry spearheaded by @BalsaraLab on the microstructure and electrochemical properties of polymer-ceramic architectures. There's eye candy: look for the TEM pictures of ceramic "beads" embedded in polymer domains!
frontiersin.org/articles/10.…
Balsara Lab retweeted
my final (I think? I hope?) paper from my time with the
@BalsaraLab was published today in JES from
@IOPPublishing! Learn how Jackie and Pallab were able to model local current density during Li plating/stripping all from 3D X-ray tomography: iopscience.iop.org/article/1…
New paper out from Neel! In this paper Neel and his collaborators created a comprehensive phase diagram for PEO/PMMA/LiTFSI blend electrolyte and compared the results to model predictions. Read it here: pubs.acs.org/doi/full/10.102…
A new paper out in collaboration with Chao Fang from Rui Wang's group! We do MD simulations to understand the molecular origins of the high transference number of poly(pentyl malonate) #electrolytes compared to poly(ethylene oxide). Read it here: doi.org/10.1021/acsmacrolett…
New paper form Neel out now! Neel and his collaborators systematically analyzed the effect of added salt on a miscible polymer blend electrolyte system, calculated thermodynamic interaction parameters, and created a model for blends phase behavior. pubs.acs.org/doi/10.1021/acs…
The Balsara lab’s at APS this week! Neel started off the week strong with a great talk about his work using QENS to study PPM-based polymer electrolytes!
After Zach’s talk stay in room 207 to see Jaeyong talk at 12:06pm about his work with studying ion transport and phase behavior in acetal-based polymer electrolytes!
To wrap up the week, @davidhalat is giving a talk at 12:42pm in room 206 (session Z14). Tune in to learn about his work using electrophoretic NMR to study POSS-based multivalent electrolytes!