A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery
| Autor: | Zheng Yang, Wentao Duan, R.S. Vemuri, Xiaoliang Wei, Dehong Hu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Battery (electricity)
Materials science General Chemical Engineering 02 engineering and technology Electrolyte 010402 general chemistry Electrochemistry 01 natural sciences Redox General Biochemistry Genetics and Molecular Biology Energy storage Cyclic N-Oxides Electrolytes Electric Power Supplies Spectroscopy Fourier Transform Infrared Organic Chemicals Electrodes General Immunology and Microbiology business.industry General Neuroscience Imidazoles Reproducibility of Results Free Radical Scavengers 021001 nanoscience & nanotechnology Flow battery 0104 chemical sciences Chemistry State of charge Optoelectronics 0210 nano-technology business Oxidation-Reduction Voltage |
| Popis: | Redox flow batteries have been considered as one of the most promising stationary energy storage solutions for improving the reliability of the power grid and deployment of renewable energy technologies. Among the many flow battery chemistries, non-aqueous flow batteries have the potential to achieve high energy density because of the broad voltage windows of non-aqueous electrolytes. However, significant technical hurdles exist currently limiting non-aqueous flow batteries to demonstrate their full potential, such as low redox concentrations, low operating currents, under-explored battery status monitoring, etc. In an attempt to address these limitations, we recently reported a non-aqueous flow battery based on a highly soluble, redox-active organic nitronyl nitroxide radical compound, 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO). This redox material exhibits an ambipolar electrochemical property, and therefore can serve as both anolyte and catholyte redox materials to form a symmetric flow battery chemistry. Moreover, we demonstrated that Fourier transform infrared (FTIR) spectroscopy could measure the PTIO concentrations during the PTIO flow battery cycling and offer reasonably accurate detection of the battery state of charge (SOC), as cross-validated by electron spin resonance (ESR) measurements. Herein we present a video protocol for the electrochemical evaluation and SOC diagnosis of the PTIO symmetric flow battery. With a detailed description, we experimentally demonstrated the route to achieve such purposes. This protocol aims to spark more interests and insights on the safety and reliability in the field of non-aqueous redox flow batteries. |
| Databáze: | OpenAIRE |
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