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A high potential biphenol derivative cathode: toward a highly stable air-insensitive aqueous organic flow battery
- Source :
- Science Bulletin. 66:457-463
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Aqueous organic flow batteries have attracted dramatic attention for stationary energy storage due to their resource sustainability and low cost. However, the current reported systems can normally be operated stably under a nitrogen or argon atmosphere due to their poor stability. Herein a stable air-insensitive biphenol derivative cathode, 3,3′,5,5′-tetramethylaminemethylene-4,4′-biphenol (TABP), with high solubility (>1.5 mol L−1) and redox potential (0.91 V vs. SHE) is designed and synthesized by a scalable one-step method. Paring with silicotungstic acid (SWO), an SWO/TABP flow battery shows a stable performance of zero capacity decay over 900 cycles under the air atmosphere. Further, an SWO/TABP flow battery manifests a high rate performance with an energy efficiency of 85% at a current density of 60 mA cm−2 and a very high volumetric capacity of more than 47 Ah L−1. This work provides a new and practical option for next-generation practical large-scale energy storage.
- Subjects :
- Multidisciplinary
Materials science
Aqueous solution
Silicotungstic acid
010502 geochemistry & geophysics
01 natural sciences
Flow battery
Energy storage
Cathode
law.invention
chemistry.chemical_compound
Chemical engineering
chemistry
law
Current (fluid)
Solubility
Current density
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 20959273
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- Science Bulletin
- Accession number :
- edsair.doi...........d931884bc79546c9d251641cb33dad7c