{"id":1034,"date":"2022-12-01T12:17:22","date_gmt":"2022-12-01T11:17:22","guid":{"rendered":"https:\/\/compbat.eu\/?p=1034"},"modified":"2022-12-05T09:30:45","modified_gmt":"2022-12-05T08:30:45","slug":"testing-of-new-materials-and-redox-flow-battery-assembling","status":"publish","type":"post","link":"https:\/\/compbat.eu\/2022\/12\/01\/testing-of-new-materials-and-redox-flow-battery-assembling\/","title":{"rendered":"Testing of new materials and Redox Flow Battery assembling"},"content":{"rendered":"

Looking for suitable materials for Aqueous Organic Redox Flow Batteries (AO-RFBs), the new organic
\ncompounds synthetized within the CompBat project are tested in lab-scale flow batteries at
\nUniversity of Turku. The studies, performed inside a glove-box, involve lab-cells with an active are of
\n5 cm 2 . The experiments consist on galvanostatic\/potentiostatic cycling to study the stability of the
\nnew molecules. During this work, different supporting electrolytes, membranes and concentrations
\nof the active materials are studied. The batteries ran inside the glove are shown in the next pictures.<\/p>\n

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Further studies are performed using commercial Pinflow lab-scale flow batteries with an area of 20
\ncm 2 . The experiments involve both a standard single cell and a cell stack that comprises 5 single cells
\nwith the same characteristics. The picture below shows the set-up of the cell stack ran with
\nvanadium electrolyte including additional cells to measure half-cells state of charge and over-
\npotentials, as well as recordings of the potentials of each single cell.<\/p>\n

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The following video shows the assembling of the Pinflow battery (single cell) by one of the CompBat
\nresearchers at University of Turku. The assembly consists on the insertion of the different battery
\ncomponents in the following order: end plate, current collector, bipolar plate, seal, first flow frame,
\nfirst carbon felt electrode, seal, membrane, seal, second flow frame, second carbon felt electrode,
\nseal, bipolar plate, current collector, end plate. After that, a torque wrench is used to tighten the
\nscrews to a fixed torque value. The cell is ready and connected to the tanks. Then, the electrolytes
\nfrom both reservoirs are pumped to the cell and back to the tanks.<\/p>\n

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