Integrated electrode for vanadium cell and preparation method thereof
A vanadium battery and electrode technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of high contact resistance between bipolar plates and electrodes, large battery flow resistance, and difficulty in charging and discharging with large currents, so as to improve the efficiency of vanadium batteries. Power, reduce battery resistance, eliminate the effect of contact resistance
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Embodiment 1
[0025] Take graphite felt electrode (specification: 560mm×width 320mm×thickness 5mm, bulk density is 0.10g / cm 3 ) and 20g of polyethylene resin powder (PE) with a particle size of 50μm, the dispersion medium is 50mL of toluene, after ultrasonic treatment in the ultrasonic tank for 5h, the polyethylene resin powder is filled in the graphite felt electrode, and the polyethylene resin powder accounts for the volume of the graphite felt electrode 50% of. After taking it out, put it in an oven at 90°C until the toluene has evaporated, then put it into a mold for hot pressing on a hot press after drying, the hot pressing temperature is 160°C, the hot pressing time is 20min, and the pressure is 1MPa. 50mL was ultrasonically treated in an ultrasonic tank for 1h, after 1.5mm was exposed on both sides of the graphite felt electrode, and after the DMF solution was evaporated in an oven at 70°C, an integrated electrode for a vanadium battery was obtained.
[0026] In this embodiment, the...
Embodiment 2
[0028] Take the graphite felt electrode (specification: length 560mm×width 320mm×thickness 6mm, bulk density is 0.15g / cm 3 ) and 20g of polypropylene resin powder (PP) with a particle size of 80μm, the dispersion medium is 40mL of acetone, after ultrasonic treatment in the ultrasonic tank for 30min, the polypropylene resin powder is filled in the graphite felt electrode, and the polypropylene resin powder accounts for the volume of the graphite felt electrode 60% of. After taking it out, put it in an oven at 90°C until the acetone has evaporated, put it into a mold for hot pressing on a hot press after drying, the hot pressing temperature is 190°C, the hot pressing time is 30min, and the pressure is 1MPa. Ultrasonic treatment in an ultrasonic bath for 1 hour, after 2.0mm of both sides of the graphite felt electrode were exposed, and after the chloroform evaporated in an oven at 70°C, an integrated electrode for a vanadium battery was obtained.
[0029] In this embodiment, the...
Embodiment 3
[0031] Take graphite felt electrode (specification: 560mm×width 320mm×thickness 7mm, bulk density is 0.05g / cm 3 ) and 20g of polyether ether ketone with a particle size of 100μm, the dispersion medium is 50mL of ether, after ultrasonic treatment in the ultrasonic tank for 5h, the polyether ether ketone powder is filled in the graphite felt electrode, and the polyether ether ketone powder accounts for 30%. After taking it out, put it in an oven at 90°C until the ether has evaporated, put it into a mold for hot pressing on a hot press after drying, the hot pressing temperature is 170°C, the hot pressing time is 25min, and the pressure is 0.5MPa, take it out and put it in DMF 50 mL of the solution was ultrasonically treated in an ultrasonic tank for 1 h, and after 2.5 mm were exposed on both sides of the graphite felt electrode, the DMF solution was evaporated in an oven at 70 ° C to obtain an integrated electrode for a vanadium battery.
[0032] In this embodiment, the volume r...
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