Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5127338 | Journal of Energy Storage | 2017 | 7 Pages |
â¢Molybdenum polyoxometalates show promise for non-aqueous RFBs.â¢Aramid nanofiber membranes provide good separation and conductivity.â¢High coulombic efficiencies were observed.
The Keggin-type polyoxometalate Li3PMo12O40 was evaluated for energy storage applications in non-aqueous media. In acetonitrile, using a static H-cell, high coulombic efficiency (â¼90%) and stable (>500Â h) charge and discharge results were obtained. Different separators taking advantage of charge and size-based differentiation were compared for this system. Celgard®2325, Nafion®117 and aramid nanofiber-based membranes (ANF) were examined. Both Li-exchanged Nafion®117 and ANF membranes enabled stable charge/discharge cycles with high coulombic efficiency for this non-aqueous polyoxometalate system. The ANF membrane, which separates based on size, permitted operation at higher current densities than the Nafion®117 ion-exchange membrane.
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