Metrics
1 Record Views
Journal article
Indolo[2,3-b]quinoxaline as a Low Reduction Potential and High Stability Anolyte Scaffold for Nonaqueous Redox Flow Batteries
Journal of the American Chemical Society, Vol.145(34), pp.18877-18887
08/30/2023
PMID: 37585274
Web of Science ID: WOS:001049423400001
Abstract
Redox flow batteries(RFBs) are a promising stationaryenergy storagetechnology for leveling power supply from intermittent renewable energysources with demand. A central objective for the development of practical,scalable RFBs is to identify affordable and high-performance redox-activemolecules as storage materials. Herein, we report the design, synthesis,and evaluation of a new organic scaffold, indolo[2,3-b]quinoxaline, for highly stable, low-reduction potential, and high-solubilityanolytes for nonaqueous redox flow batteries (NARFBs). The mixtureof 2- and 3-(tert-butyl)-6-(2-methoxyethyl)-6H-indolo[2,3-b]quinoxaline exhibits a lowreduction potential (-2.01 V vs Fc/Fc(+)), high solubility(>2.7 M in acetonitrile), and remarkable stability (99.86% capacityretention over 49.5 h (202 cycles) of H-cell cycling). This anolytewas paired with N-(2-(2-methoxyethoxy)-ethyl)phenothiazine(MEEPT) to achieve a 2.3 V all-organic NARFB exhibiting 95.8% capacityretention over 75.1 h (120 cycles) of cycling.
Details
- Title
- Indolo[2,3-b]quinoxaline as a Low Reduction Potential and High Stability Anolyte Scaffold for Nonaqueous Redox Flow Batteries
- Publication Details
- Journal of the American Chemical Society, Vol.145(34), pp.18877-18887
- Resource Type
- Journal article
- Publisher
- American Chemical Society
- Number of pages
- 11
- Grant note
- Joint Center for Energy Storage Research (JCESR), a Department of Energy, Energy Innovation Hub S10OD024998 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA German Scholarship Foundation F32GM142231 / National Institute of General Medical Sciences of the National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of General Medical Sciences (NIGMS) 5U01GM121667; CHE-1955643 / U.S. National Science Foundation; National Science Foundation (NSF)
- Copyright
- © 2023 The Authors.
- Identifiers
- WOS:001049423400001; 99381798344606600
- Academic Unit
- Chemistry; Hal Marcus College of Science and Engineering
- Language
- English