Double-efficient air electrode and preparation thereof
An air electrode and electrode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of long cycle and complex process, and achieve the effect of simple operation, simplified process and easy amplification
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Embodiment 1
[0053] Polyvinylidene fluoride (PVDF) hydrophobized carbon paper (produced in Japan) was used as the electrode support 1 substrate. The polyvinylidene fluoride content contained in the treated carbon paper is about 60%. Mix 60% activated carbon and 40% polyvinylidene fluoride in deionized water to form an emulsion, apply evenly on one side of the carbon paper substrate, bake at 300°C, and cold press to form the gas diffusion layer 2 . Similarly, double-effect electrocatalyst platinum (Pt) and graphitized acetylene black and polyvinylidene fluoride are mixed in deionized water in a ratio of 3:2:3 to form an emulsion that is evenly coated on the gas diffusion layer 2, and Roasting forms protective layer 3, and the load of platinum (Pt) catalyst is 0.6mg / cm 2 . The dual-effect electrocatalyst platinum (Pt) and polyvinylidene fluoride (PVDF) are in a ratio of 1:1 (the load of platinum (Pt) catalyst is 0.4mg / cm 2 ) is mixed with deionized water to form an emulsion, which is even...
Embodiment 2
[0055] Nickel foam that has been pre-pressed is used as the substrate of the electrode support 1 . The porosity of nickel foam after treatment is about 70%. Mix 40% acetylene black and 60% polytetrafluoroethylene (PTFE) in isopropanol to form an emulsion and apply it evenly on both sides of the foamed nickel substrate. The loading ratio on both sides is 1:2. The gas diffusion layer 2 is formed by firing. Similarly, mix the double-effect electrocatalyst-perovskite oxide with graphitized activated carbon and polytetrafluoroethylene (PTFE) in a ratio of 4:3:3 to form a uniform emulsion and apply it evenly on the diffusion layer. The less substrate side forms a protective layer 3 after being blown dry by a hair dryer, and the loading of the catalyst in this layer is 3mg / cm 2 . The double-effect electrocatalyst-perovskite oxide and polytetrafluoroethylene are in a ratio of 4:1 (the loading of the catalyst is 1.5mg / cm 2 ) are mixed to form a uniform emulsion, evenly coated on th...
Embodiment 3
[0057] Polytetrafluoroethylene (PTFE) hydrophobized carbon paper (produced in Germany) was used as the electrode support 1 substrate. The polytetrafluoroethylene content contained in the treated carbon paper is about 65%. Mix 35% expanded graphite and 65% polytetrafluoroethylene in a mixture of isopropanol and once-distilled water with a volume ratio of 1 to form an emulsion, evenly coat one side of the carbon paper substrate, and bake at 370°C to form a gas Diffusion layer 2. Similarly, the double-effect electrocatalyst spinel oxide, expanded graphite and polytetrafluoroethylene are mixed in a ratio of 1:1:1 to form a uniform emulsion, which is evenly coated on the gas diffusion layer 2, and is roasted and cold pressed. Form protective layer 3, the load of catalyst is 4mg / cm 2 . The double-effect electrocatalyst spinel oxide and polytetrafluoroethylene are in the ratio of 3:2 (the load of the catalyst is 2mg / cm 2 ) are mixed to form a uniform emulsion, which is evenly coa...
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