Electrode for solid state battery, solid state battery and manufacturing method of electrode for solid state battery

Abstract

The disclosure provides an electrode for solid state battery, a solid state battery, and a manufacturing method of the electrode for solid state battery. The electrode for solid state battery uses a foamed porous body as the collector. When the electrode constitutes the solid state battery, the obtained battery has low resistance, high battery capacity per unit area, and high output. A collector composed of a foamed porous body is filled with an electrode mixture by differential pressure filling to obtain an electrode, in which the content rate of an organic polymer compound is low.

Description

technical field [0001] The invention relates to an electrode for a solid battery, a solid battery, and a method for manufacturing an electrode for a solid battery. Background technique [0002] Conventionally, lithium ion secondary batteries have been widely used as secondary batteries having high energy density. A lithium ion secondary battery has a structure in which a separator is interposed between a positive electrode and a negative electrode, and a liquid electrolyte (electrolyte solution) is filled. [0003] Here, since the electrolytic solution of the lithium ion secondary battery is usually a flammable organic solvent, the safety against heat may be a problem in some cases. Therefore, a lithium-ion solid battery using an inorganic solid electrolyte instead of an organic liquid electrolyte has been proposed (see Patent Document 1). [0004] A lithium ion solid battery has a structure in which a solid electrolyte layer is disposed between a positive electrode layer ...

AI Technical Summary

Problems solved by technology

However, if the electrode layer is thickened, there is a problem that cracks due to massive damage of the electrode layer or peeling of the electrode layer from the metal foil are likely to occur.

However, the electrode described in Patent Document 4 needs to cover one side of the metal porous body with a foil, so gas stagnation occurs during the drying process, and there is a concern that uneven distribution of materials with different densities may occur, or that the volume of the foil portion may increase. leading to a decrease in volumetric energy density

Images