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- W3185909559 abstract "•PFPs are developed as a new family of promising energy-storage materials •A 2.0 M electron AORFB is shown with 0% capacity fade at elevated temperatures •Robust thermal stability of PFPs enable the application in solar-abundant areas Aqueous organic redox flow batteries (AORFBs) permit us to utilize renewable energy through organic redox-active materials. While long cell-cycling lifetime has been aspired in AORFBs at room temperature, the exploration of robust organic molecules with thermal stability for energy storage, especially in sunlight-rich areas with elevated temperature, is of vital importance. In the present work, we demonstrate an extremely stable AORFB with high capacity based on propionic-acid-functionalized phenazine (PFP) at both room and elevated temperatures. The full redox-flow battery based on 1,8-PFP with 2.0 M electron concentration in 1.0 M KOH against ferrocyanide presents an OCV of 1.15 V, and no capacity fade is observed when cycled at 45°C for 53 days, which is among the best capacity retention reported so far. These results demonstrate great promise of PFPs for future energy-storage technology in tough conditions with high temperature and strong alkaline solutions. Aqueous organic redox flow batteries (AORFBs) permit us to utilize renewable energy through organic redox-active materials. While long cell-cycling lifetime has been aspired in AORFBs at room temperature, the exploration of robust organic molecules with thermal stability for energy storage, especially in sunlight-rich areas with elevated temperature, is of vital importance. In the present work, we demonstrate an extremely stable AORFB with high capacity based on propionic-acid-functionalized phenazine (PFP) at both room and elevated temperatures. The full redox-flow battery based on 1,8-PFP with 2.0 M electron concentration in 1.0 M KOH against ferrocyanide presents an OCV of 1.15 V, and no capacity fade is observed when cycled at 45°C for 53 days, which is among the best capacity retention reported so far. These results demonstrate great promise of PFPs for future energy-storage technology in tough conditions with high temperature and strong alkaline solutions." @default.
- W3185909559 created "2021-08-02" @default.
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- W3185909559 date "2021-09-01" @default.
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- W3185909559 title "Ultrastable aqueous phenazine flow batteries with high capacity operated at elevated temperatures" @default.
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- W3185909559 doi "https://doi.org/10.1016/j.joule.2021.06.019" @default.
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