The impact of bulk electrolysis cycling conditions on the perceived stability of redox active materials
Name
1-s2.0-S1388248119302887-main.pdf
Description
Published version
Size
1.99 MB
Format
Unknown
Checksum (MD5)
45fa9dc030afa8385e30cbcd0b956130
Author(s)
Kowalski, Jeffrey Adam
Neyhouse, Bertrand J
Brushett, Fikile R
Date Issued
2020
Journal
Electrochemistry Communications
Publisher
Elsevier BV
Version
Final published version
Abstract
© 2019 The Authors Emerging grid storage needs are motivating the discovery and development of new, potentially inexpensive redox couples for use in flow batteries. Long-term stability in electrochemical environments remains a key challenge and charge/discharge cycling in a bulk electrolysis cell is a common initial approach. However, as cycling protocols are not yet standardized, comparison between different materials is difficult. Here, using a well-studied, substituted dialkoxybenzene as a model compound, we examine the impact of cycling conditions on perceived stability. Specifically, we show that cycle time is a better measure of stability than cycle number and, for materials that are unstable in their charged state, the fractional capacity accessed is inversely related to cycle time until failure.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.ELECOM.2019.106625
