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X-WR-CALNAME:StorageX Tech Talk - 
X-WR-TIMEZONE:Pacific Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260521T084620Z
UID:tag:localist.com\,2008:EventInstance_49710393513158
DTSTART:20250521T170000Z
DTEND:20250521T180000Z
DESCRIPTION:This student-run monthly series spotlights the latest research 
 from Stanford\, presented by PhD candidates and postdocs. Registration is 
 required\, and is free and open to the public.\n\nThis month's speakers:\n
 \nLouisa Greenburg\, Ph.D. Candidate\, Stanford University\n"Crowding Agen
 t Stabilizes Aqueous Electrolyte for Reversible Iron Metal Anode"\n\nTalk 
 Abstract: Aqueous batteries with Fe metal anodes are a promising technolog
 y for safe\, low-cost stationary storage. Fe can deliver high gravimetric 
 and volumetric capacities\, but its commercial viability is hindered by co
 mpeting side reactions and low Coulombic efficiency. This work explores th
 e feasibility of employing polyethylene glycol (PEG) as a crowding agent i
 n Fe electrolyte to suppress the competing hydrogen evolution reaction (HE
 R) and improve Fe plating/stripping efficiency. We demonstrate that in a 1
  molal Fe electrolyte\, employing 60% PEG/40% H2O as the solvent yields hi
 gher Coulombic efficiency in Fe||Cu half cells and enables over two times 
 the cycle life in Fe||Fe symmetric cells compared to the control composed 
 of 100% H2O solvent. Further\, we find that the 60% PEG electrolyte decrea
 ses H2 generation by almost 10 times during cycling. This electrolyte engi
 neering approach also yields more crystalline Fe nuclei and denser growth 
 during plating\, leading to highly compact and reversible Fe anodes. Our r
 esults encourage further development of molecular crowding electrolytes fo
 r high efficiency Fe metal anodes.\n\nSpeaker's Bio: Louisa Greenburg is a
  5th year PhD candidate in the Department of Materials Science and Enginee
 ring. She studies materials design for next-generation batteries under the
  guidance of Prof. Yi Cui. Her focus is on lithium-sulfur batteries and ir
 on anodes in aqueous systems. She received her B.A. in chemistry from Dart
 mouth College in 2020.\n\nRegistration is open to all and free.
LOCATION:
SUMMARY:StorageX Tech Talk - 
URL;VALUE=URI:https://events.stanford.edu/event/storagex-tech-talk
CATEGORIES:Lecture/Presentation/Talk
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