Fluorescence-Enabled Self-Reporting for Redox Flow Batteries
Abstract
Monitoring battery health is challenging. Self-reporting enables the rapid health assessment of redox flow batteries (RFBs) and provides insight into degradation mechanisms of electrochemically active molecules (redoxmers). In this study, we introduce fluorescence as an orthogonal property to probe this chemistry in situ. An established anolyte redoxmer, 2,1,3-benzothiadiazole, is rendered an efficient blue-green fluorophore through minimalistic derivatization. One of the derivatives is electrochemically reversible with a long lifetime and cycling stability in the charged state. Spectroscopic measurements on this new redoxmer reveal strong effects of the electrolyte cation on the fluorescence that are useful for probing the solvent microenvironment. Using this probe, we demonstrate proof-of-concept in situ crossover sensing and characterize the effects of electrolyte composition on this crossover. In this way, real-time tracing of redoxmers in a flow cell is demonstrated, paving the way to include still more self-reporting functions into the redoxmers.
- Authors:
-
[1];
[2];
[2];
[2];
[2];
[1];
[2]
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1712731
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Energy Letters
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 9; Journal ID: ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; fluorescence; membranes; batteries; electrolytes; stability
Citation Formats
Robertson, Lily A., Shkrob, Ilya A., Agarwal, Garvit, Zhao, Yuyue, Yu, Zhou, Assary, Rajeev S., Cheng, Lei, Moore, Jeffrey S., and Zhang, Lu. Fluorescence-Enabled Self-Reporting for Redox Flow Batteries. United States: N. p., 2020.
Web. doi:10.1021/acsenergylett.0c01447.
Robertson, Lily A., Shkrob, Ilya A., Agarwal, Garvit, Zhao, Yuyue, Yu, Zhou, Assary, Rajeev S., Cheng, Lei, Moore, Jeffrey S., & Zhang, Lu. Fluorescence-Enabled Self-Reporting for Redox Flow Batteries. United States. https://doi.org/10.1021/acsenergylett.0c01447
Robertson, Lily A., Shkrob, Ilya A., Agarwal, Garvit, Zhao, Yuyue, Yu, Zhou, Assary, Rajeev S., Cheng, Lei, Moore, Jeffrey S., and Zhang, Lu. Fri .
"Fluorescence-Enabled Self-Reporting for Redox Flow Batteries". United States. https://doi.org/10.1021/acsenergylett.0c01447. https://www.osti.gov/servlets/purl/1712731.
@article{osti_1712731,
title = {Fluorescence-Enabled Self-Reporting for Redox Flow Batteries},
author = {Robertson, Lily A. and Shkrob, Ilya A. and Agarwal, Garvit and Zhao, Yuyue and Yu, Zhou and Assary, Rajeev S. and Cheng, Lei and Moore, Jeffrey S. and Zhang, Lu},
abstractNote = {Monitoring battery health is challenging. Self-reporting enables the rapid health assessment of redox flow batteries (RFBs) and provides insight into degradation mechanisms of electrochemically active molecules (redoxmers). In this study, we introduce fluorescence as an orthogonal property to probe this chemistry in situ. An established anolyte redoxmer, 2,1,3-benzothiadiazole, is rendered an efficient blue-green fluorophore through minimalistic derivatization. One of the derivatives is electrochemically reversible with a long lifetime and cycling stability in the charged state. Spectroscopic measurements on this new redoxmer reveal strong effects of the electrolyte cation on the fluorescence that are useful for probing the solvent microenvironment. Using this probe, we demonstrate proof-of-concept in situ crossover sensing and characterize the effects of electrolyte composition on this crossover. In this way, real-time tracing of redoxmers in a flow cell is demonstrated, paving the way to include still more self-reporting functions into the redoxmers.},
doi = {10.1021/acsenergylett.0c01447},
journal = {ACS Energy Letters},
number = 9,
volume = 5,
place = {United States},
year = {Fri Aug 07 00:00:00 EDT 2020},
month = {Fri Aug 07 00:00:00 EDT 2020}
}
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