Composite powder for manufacturing porous body included in anode body of electrolytic capacitor, method of manufacturing composite powder, and method of manufacturing anode body for electrolytic capacitor
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMasayuki Hogiri, Yukiyasu Sugihara
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Abstract
A composite powder for manufacturing a porous body included in an anode body of an electrolytic capacitor contains a raw material powder containing a valve metal and an alcohol compound (excluding a polymer) adhering to surfaces of particles of the raw material powder. A melting point of the alcohol compound is more than or equal to 35° C.
Claims26
A composite powder for manufacturing a porous body included in an anode body of an electrolytic capacitor, the composite powder comprising:
- a raw material powder containing a valve metal;
- and
- an alcohol compound adhering to a surface of a particle of the raw material powder, the alcohol compound excluding a polymer,
- wherein a melting point of the alcohol compound is more than or equal to 35° C.
A method of manufacturing a composite powder for manufacturing a porous body included in an anode body of an electrolytic capacitor, the method comprising:
- preparing a raw material powder containing a valve metal;
- preparing an alcohol solution containing a solvent and an alcohol compound having a melting point of more than or equal to 35° C., the alcohol compound excluding a polymer;
- adding the alcohol solution to the raw material powder while stirring the raw material powder to obtain the raw material powder in a wet state;
- and
- removing the solvent by drying the raw material powder in the wet state while stirring the raw material powder to obtain a composite powder,
- wherein the composite powder contains the raw material powder and the alcohol compound adhering to a surface of a particle of the raw material powder.
A method of manufacturing an anode body for an electrolytic capacitor, the method comprising:
- preparing a composite powder that contains a raw material powder containing a valve metal and an alcohol compound adhering to a surface of a particle of the raw material powder, the alcohol compound excluding a polymer;
- performing compression-molding after filling a predetermined mold with the composite powder to obtain a compact;
- removing the alcohol compound included in the compact;
- sintering the compact from which the alcohol compound has been removed to obtain a porous body;
- and
- forming a dielectric layer on a surface of the porous body to obtain an anode body,
- wherein a melting point of the alcohol compound is more than or equal to 35° C.
Dependencies are inferred from the claim text.