This presentation will describe our efforts to create redox flow batteries from organic materials. We have focused on using perylene diimide and cyclopropenium cations as a charge storage media and coupled with that membranes that are compatible with both high voltages and organic solvents for use in non-aqueous redox flow batteries. The membranes can be made via a processing-free fabrication method by polymerizing an ionic polymer inside a porous, commercially available scaffold. As the membrane in a non-aqueous redox flow battery, they are highly effective at preventing material crossover. For example, a perylene diimide derivative, when used as the anolyte, exhibits no detectible crossover and a new cyclopropenium cation, when used as the catholyte, exhibits less than 0.08% crossover per day. Cycling of a full battery yields a voltage of 1.7 V battery showing &gt;99.5% coulombic efficiency and &gt;99.5% capacity retention per cycle over a two-week period. This general membrane fabrication strategy supports rapid development and testing of new charge-storage molecules and battery components in fully functioning devices and fills a void in membrane candidates for testing high voltage non-aqueous redox flow batteries. <br/> <br/>

Making new materials for energy storage

Macromolecular Chemistry: The Second Century

[Author Benefits](https://scimeetings.acs.org/?utm_source=pubs_content_marketing&utm_medium=website&utm_campaign=0320_MCF_NPI_Launch_Spring_Homepage&ref=pubs_content_marketing)

[How to use SciMeetings](https://storage.googleapis.com/dl.morressier.com/acs/SciMeetings-ACSSpring2020-HowToGuide_M3020-Final.pdf)

[Frequently Asked Questions](https://storage.googleapis.com/dl.morressier.com/acs/SciMtng_ACSNMSp2020_FAQ_M3120_Final.pdf)

ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.