Cell stack for redox flow battery

Details Cell stack for redox flow battery Cell stack for redox flow battery

H - Electricity

01

M

H01M 8/18 (2006.01) H01M 6/48 (2006.01) H01M 8/24 (2006.01) H01M 10/02 (2006.01) H01M 10/18 (2006.01)

Patent

CA 2450510

This invention provides a cell stack for a redox flow battery that can provide battery efficiencies with high reliability over a long term, without any adhesive bonding between a bipolar plate and electrodes. In the cell stack 1 for the redox flow battery of a cell frame 2, electrodes 3, 4 and a membrane 5 being stacked in layers, the cell frame 2 comprises a frame 2A and a bipolar plate 9 arranged inside of the frame 2A, and the electrodes 3, 4 are put into close contact with the bipolar plate 9 by a clamping force, without being adhesively bonded to the bipolar plate 9. It is preferable that when the electrodes 3, 4 are compressed to a thickness corresponding to a level difference between the frame 2A and the bipolar plate 9, repulsive force of the electrodes is in the range of more than 15kPa to less than 150kPa (more than 0.153kgf/cm2 to less than 1.53kgf/cm2).

Cette invention concerne une pile cellulaire pour cuve à recirculation redox dont la fiabilité est durablement accrue sans adhésion entre une plaque dipolaire et d'une électrode. La pile cellulaire (1) pour cuve à recirculation redox est une structure stratifiée de châssis (1) d'électrodes (3, 4) et de membranes (5). Le châssis (2) comprend un cadre (2A) et une plaque dipolaire (9) disposée à l'intérieur du cadre (2A). Les électrodes (3, 4) sont en contact avec la plaque dipolaire (9) sous l'effet d'une force de serrage sans y adhérer. Si les électrodes (3, 4) sont comprimées et atteignent une épaisseur équivalent à l'écart entre le cadre (2A) et la plaque dipolaire (9), la force de répulsion sera de préférence supérieure à 15 kPa et inférieure à 150 kPa (plus de 0,153 kgf/cm<2> et moins de 1,53kgf/cm<2>).

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