Electrochemical device
A technology of electrochemical components and electrodes, which is applied in the field of electrochemical components, can solve problems such as difficult storage, ineffective use of installation space, easy generation of dead ends, etc., and achieve the effect of easy storage
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Embodiment 1
[0138] (1) Preparation of composite particles
[0139] Composite particles to be the cathode of the lithium ion secondary battery were produced by the method of passing through the granulation step described above by the procedure shown below. Here, composite particle P10 is comprised from the electrode active material (90 mass %) of a cathode, a conductive additive (6 mass %), and a binder (4 mass %).
[0140] As the electrode active material of the cathode, the general formula: Li x mn y Ni z co 1-x-y o w Among the composite metal oxides shown, particles of composite metal oxides satisfying the conditions of x=1, y=0.33, z=0.33, and w=2 (BET specific surface area: 0.55 m 2 / g, average particle size: 12 μm). In addition, acetylene black was used as a conductive aid. Furthermore, polyvinylidene fluoride is used as an adhesive.
[0141] First, in the raw material liquid preparation step, a "raw material liquid" (acetylene carbon black) in which polyvinylidene fluoride w...
Embodiment 2
[0163] (1) Preparation of composite particles
[0164] Composite particles composed of an anode (first electrode) and a cathode (second electrode) of an electric double layer capacitor were produced by the method of passing through the granulation step described above by the procedure shown below. Here, the composite particles P10 consist of an electrode active material (88% by mass), a conductive additive (4% by mass), and a binder (8% by mass).
[0165] As the electrode active material, short-fibrous steam-activated activated carbon (BET specific surface area: 2000m 2 / g, average particle size: 17 μm). In addition, acetylene black was used as a conductive aid. Furthermore, polyvinylidene fluoride was used as an adhesive.
[0166] First, in the raw material liquid preparation step, a "raw material liquid" (acetylene carbon black) in which polyvinylidene fluoride was dissolved in a solution of N,N-dimethylformamide {(DMF): solvent} was prepared. 1.5% by mass of carbon blac...
Embodiment 3
[0182] (1) Preparation of electrodes
[0183] Electrodes for electric double layer capacitors were produced in the following procedure. First, a method of forming the anode will be described. As the electrode active material, short-fibrous steam-activated activated carbon (BET specific surface area: 2000m 2 / g, average particle size: 17 μm). As the conductive aid, acetylene black was used. Furthermore, polyvinylidene fluoride was used as an adhesive. Composite particles were prepared by the above-mentioned granulation process so that the mass ratio was electrode active material: conductive additive: binder = 88:4:8. Using the composite particles, an electrode for a double charge capacitor having an active material-containing layer having a thickness of 100 μm was obtained using a hot roll press.
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