Electrochemical power source diaphragm and preparation method thereof, and electrochemical cell or capacitor
An electrochemical and diaphragm technology, applied in the field of electrochemistry, can solve the problems of low heat resistance temperature, poor electrolyte wettability, etc., and achieve the effects of high heat resistance temperature, simple and effective preparation method, and high safety.
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Embodiment 1
[0027] A preparation method of an electrochemical power separator, comprising the following steps:
[0028] (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 5% of PVDF-HFP;
[0029] (2) Add MgO powder with a particle size of 50nm to the above solution, and stir and mix evenly to obtain a suspension; the mass ratio of the MgO powder to PVDF-HFP is 5:1;
[0030] (3) The obtained suspension 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.
[0031] The electrochemical power supply separator prepared in this embodiment was measured for porosity, pore size and air permeability. Among them, the porosity and pore diameter are measured by a porosimeter, and the air permeability is measured by an air permeability measuring instrument....
Embodiment 2
[0033] A preparation method of an electrochemical power separator, comprising the following steps:
[0034] (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;
[0035] (2) Add Al with a particle size of 100nm to the above solution 2 o 3 powder, and stir and mix uniformly to obtain a suspension; the Al 2 o 3 The mass ratio of powder to PVDF-HFP is 8:1;
[0036] (3) Scrape-coat the obtained suspension 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.
[0037] The electrochemical power supply separator prepared in this embodiment was measured for porosity, pore size and air permeability. Among them, the porosity and pore diameter are measured by a porosimeter, and the air permeability is measured by an air permeability measuri...
Embodiment 3
[0039] A preparation method of an electrochemical power separator, comprising the following steps:
[0040] (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;
[0041] (2) Add SiO with a particle size of 200nm to the above solution 2 powder, and stir and mix evenly to obtain a suspension; the SiO 2 The mass ratio of powder to PVDF-HFP is 10:1;
[0042] (3) Scrape-coat the obtained suspension on a clean glass substrate, dry it 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.
[0043] The electrochemical power supply separator prepared in this embodiment was measured for porosity, pore size and air permeability. Among them, the porosity and pore diameter are measured by a porosimeter, and the air permeability is measured by an air permeability measuring instrumen...
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