Degradable capacitor and manufacture method thereof
A manufacturing method and technology of capacitors, which are applied in the field of electronics and can solve the problems of waste capacitors polluting the environment, etc.
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[0019] According to an embodiment of the present invention, the capacitor is encapsulated by a degradable encapsulation material. The capacitor is encapsulated with a degradable encapsulation material to form an encapsulation layer 40 surrounding the first electrode layer 10 , the degradable dielectric layer 20 and the second electrode layer 30 to protect the capacitor structure.
[0020] Wherein, the encapsulation layer 40 can be formed by lamination method, coating method and the like. The thickness range of the encapsulation layer 40 may be between 10 μm-1000 μm. The degradable encapsulation material is selected from one or more of the following: collagen, gelatin, elastin, silk fibroin, spidroin, sodium alginate, chitosan, hyaluronic acid, polycaprolactone, polyanhydride, Polylactic acid and medical degradable polyester.
[0021] According to an embodiment of the present invention, the material of the first electrode layer 10 and / or the second electrode layer 30 is magne...
example 1
[0073] In this example, a degradable polymer film is used as a degradable dielectric layer to manufacture a degradable capacitor.
[0074] Weigh 1g of polylactic acid particles and dissolve in 10ml of chloroform, stir well at room temperature to dissolve. The above solution was spin-coated on a glass substrate to obtain a polylactic acid film (ie, to form a degradable dielectric layer). The above film was heated and dried in an oven at 50° C. for 24 hours. Metal magnesium was sputtered on the two surfaces of the above-mentioned film respectively (that is, the first electrode layer and the second electrode layer were formed), and after the electrodes were led out with a magnesium tape, a solution of polylactic acid (0.1 g / mL) was evenly applied on the surface of the above-mentioned material ( That is, forming an encapsulation layer), the degradable capacitor can be obtained after drying.
example 2
[0076] In this example, the degradable dielectric layer includes a first metal oxide layer, a degradable solid electrolyte layer and a second metal oxide layer.
[0077] Weigh 1g of polyvinyl alcohol particles and dissolve in 10ml of 10wt% sulfuric acid solution, and fully stir to dissolve at room temperature. The above solution is coated on a Teflon substrate, and peeled off after fully drying to obtain a polyvinyl alcohol film (that is, to form a degradable solid electrolyte layer). Zinc oxide and metal magnesium are sequentially sputtered on both surfaces of the polyvinyl alcohol film respectively (that is, the first metal oxide layer and the second metal oxide layer and the first electrode layer and the second electrode layer are formed). After the electrodes are led out with a magnesium tape, a solution of polyvinyl alcohol (0.1 g / mL) is uniformly applied on the surface of the above material (that is, an encapsulation layer is formed), and the degradable capacitor is obta...
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