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Perfunctionalized Dodecaborate Clusters as Stable Metal-Free Active Materials for Charge Storage

preprint
submitted on 17.12.2018 and posted on 18.12.2018 by John L. Barton, Alex I. Wixtrom, Jeffrey A. Kowalski, Fikile Brushett, Alexander Spokoyny
We report a class of perfunctionalized dodecaborate clusters that exhibit high stability towards high concentration electrochemical cycling. These boron clusters afford several degrees of freedom in material design to tailor properties including solubility and redox potential. The exceptional stability of these clusters was demonstrated using a symmetric flow cell setup for electrochemical cycling between two oxidation states for 45 days, with post-run analysis showing negligible decomposition of the active species (<0.1%). To further probe the limits of this system, a prototype redox flow battery with two different cluster materials was used to determine mutual compatibility. This work effectively illustrates the potential of bespoke boron clusters as robust material platform for electrochemical energy conversion and storage.

History

Email Address of Submitting Author

spokoyny@chem.ucla.edu

Institution

UCLA

Country

USA

ORCID For Submitting Author

0000-0002-5683-6240

Declaration of Conflict of Interest

None

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