Electrochemical power supply diaphragm, manufacturing method thereof, electrochemical battery or capacitor
An electrochemical and diaphragm technology, applied in the field of electrochemistry, can solve the problems of poor electrolyte wettability and low heat-resistant temperature, and achieve the effects of improving safety in use, high heat-resistant temperature, and increasing tensile strength
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Embodiment 1
[0030] A preparation method of an electrochemical power separator, comprising the following steps:
[0031] (1) Add PVDF-HFP with a mass content of 1% of hexafluoropropylene HFP into acetone, stir evenly, and prepare a PVDF-HFP acetone solution with a mass concentration of 10% of PVDF-HFP;
[0032] (2) Add deionized water to the above solution, and stir evenly to obtain an emulsion; the mass content of deionized water in the emulsion is 4%;
[0033] (3) Add PET fibers with a diameter of 2 microns and a length of 3 cm to the above emulsion, and stir and mix evenly to obtain a mixed emulsion;
[0034] (4) The obtained mixed emulsion was sprayed on a clean glass substrate, dried in an oven at 60° C. for 8 hours, and the glass substrate was removed to obtain an electrochemical power separator with a thickness of 20 μm.
[0035] The electrochemical power supply separator prepared in this embodiment was measured for porosity, pore size and air permeability. Among them, the porosit...
Embodiment 2
[0037] A preparation method of an electrochemical power separator, comprising the following steps:
[0038] (1) Add PVDF-HFP with a mass content of 4% of hexafluoropropylene HFP into acetone, stir evenly, and prepare a PVDF-HFP acetone solution with a mass concentration of 20% of PVDF-HFP;
[0039] (2) Add deionized water to the above solution, and stir evenly to obtain an emulsion; the mass content of deionized water in the emulsion is 10%;
[0040] (3) Add aramid fibers with a diameter of 1 micron and a length of 5 cm to the above emulsion, and stir and mix evenly to obtain a mixed emulsion;
[0041] (4) Scrape-coat the obtained mixed emulsion on a clean glass substrate, dry it in an oven at 80°C for 10 hours, remove the glass substrate, and obtain an electrochemical power separator with a thickness of 30 μm.
[0042] The electrochemical power supply separator prepared in this embodiment was measured for porosity, pore size and air permeability. Among them, the porosity an...
Embodiment 3
[0044] A preparation method of an electrochemical power separator, comprising the following steps:
[0045] (1) Add PVDF-HFP with a mass content of 10% of hexafluoropropylene HFP into acetone, stir evenly, and prepare a PVDF-HFP acetone solution with a mass concentration of 8% of PVDF-HFP;
[0046] (2) Add deionized water to the above solution, and stir evenly to obtain an emulsion; the mass content of deionized water in the emulsion is 1%;
[0047] (3) Add PAN fibers with a diameter of 10 microns and a length of 1 cm to the above emulsion, and stir and mix evenly to obtain a mixed emulsion;
[0048] (4) Scrape-coat the obtained mixed emulsion on a clean glass substrate, dry in an oven at 100°C for 6 hours, remove the glass substrate, and obtain an electrochemical power separator with a thickness of 30 μm.
[0049]The electrochemical power supply separator prepared in this embodiment was measured for porosity, pore size and air permeability. Among them, the porosity and pore...
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