Vanadium battery spliced conductive plastic bipolar plate
A technology of conductive plastics and bipolar plates, applied in the field of vanadium batteries, can solve the problems of increased leakage current, decreased energy efficiency of stacks, and increased consumption of conductive bipolar plates, etc.
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Embodiment 1
[0024] A vanadium battery spliced conductive plastic bipolar plate, the preparation process is as follows:
[0025] The components of conductive plate 1: polypropylene PP 20%, carbon black 50%, graphite 10%, EVA 20%.
[0026] Non-conductive board 2 components: polypropylene PP 60%, silica 30%, EVA 10%.
[0027] Preparation of conductive plate 1 and non-conductive plate 2: weigh the above raw materials and mix them evenly at high speed in a high-speed mixer, and prepare conductive plate 1 and non-conductive plate 2 on a sheet extrusion molding machine. The thickness of the square plate structure 11 of the conductive plate 1 is 1 mm, the thickness of the protruding strip structure 12 is 0.3 mm, and the thickness of the non-conductive plate 2 is 0.35 mm.
[0028] Preparation of spliced bipolar plates: Place a non-conductive plate 2 on the upper and lower surfaces of the protruding strip structure 12 of the conductive plate 1, put it in the hot melt device, set the temperature at 140°...
Embodiment 2
[0030] A vanadium battery spliced conductive plastic bipolar plate, the preparation process is as follows:
[0031] The components of the conductive plate 1: polyethylene PE 25%, carbon black 48%, conductive graphite 10%, carbon nanotubes 2%, POE 10%, EVA 5%.
[0032] The components of non-conductive board 2: polyethylene PE 75%, titanium dioxide 20%, POE 5%.
[0033] Preparation of conductive plate 1 and non-conductive plate 2: weigh the above raw materials and mix them evenly at high speed in a high-speed mixer, and prepare conductive plate 1 and non-conductive plate 2 on a sheet extrusion molding machine. The thickness of the square plate structure 11 of the conductive plate 1 is 2 mm, the thickness of the protruding strip structure 12 is 0.3 mm, and the thickness of the non-conductive plate 2 is 0.85 mm.
[0034] Preparation of spliced bipolar plates: Place a non-conductive plate 2 on the upper and lower surfaces of the protruding strip structure 12 of the conductive plate 1, ...
Embodiment 3
[0036] A vanadium battery spliced conductive plastic bipolar plate, the preparation process is as follows:
[0037] The components of conductive plate 1: polypropylene PP 15%, carbon black 50%, conductive graphite 28%, graphene 2%, SBS 5%.
[0038] Non-conductive board 2 components: polypropylene PP 60%, silicon dioxide 20%, silicate 10%, SBS 10%.
[0039] Preparation of conductive plate 1 and non-conductive plate 2: weigh the above raw materials and mix them evenly at high speed in a high-speed mixer, and prepare conductive plate 1 and non-conductive plate 2 on a sheet extrusion molding machine. The thickness of the square plate structure 11 of the conductive plate 1 is 3 mm, the thickness of the protruding strip structure 12 is 1 mm, and the thickness of the non-conductive plate 2 is 1 mm.
[0040] Preparation of spliced bipolar plates: Place a non-conductive plate 2 on the upper and lower surfaces of the protruding strip structure 12 of the conductive plate 1, put it into the h...
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