Honda Motor Co., Ltd.

Sokichi Okubo

Toru Sukigara

Hiroto Maeyama

Ushio Harada

Noriaki Kamaya

Masahiro Ohta

Tadashi Tsunoda

Provided are: a positive electrode for solid-state batteries, which enables the achievement of high energy density, rate characteristics and durability; a solid-state battery; and a method for producing a solid-state battery. A positive electrode for solid-state batteries, which is provided with a collector and a positive electrode active material layer that contains a positive electrode active material, and which is configured such that: the ratio of the positive electrode active material, which is composed of primary particles, in the positive electrode active material layer is 60% by mass or more; the void fraction in the positive electrode active material layer is less than 20% by volume; and portions of the positive electrode active material layer other than the positive electrode active material, which is composed of primary particles, contain a solid electrolyte. The present invention also provides: a solid-state battery which comprises this positive electrode for solid-state batteries; and a method for producing this solid-state battery.

Positive electrode for solid-state batteries, solid-state battery and method for producing solid-state battery

A cell holder () for holding a secondary battery cell () including a positive electrode active material, a negative electrode active material, and an electrolyte which is disposed between the positive electrode active material and the negative electrode active material and is in contact with both the positive electrode active material and the negative electrode active material, and for outputting power from the secondary battery cell (), includes a cell holder body (), and a pressing portion () which is supported by the cell holder body () and includes a disc spring () being in contact with a first end face of the secondary battery cell () in a first direction and pressing the first end face of the secondary battery cell () in a second direction opposite to the first direction.

Cell holder

The current collector plate arrangement structure of the bipolar solid-state battery includes a battery cell stack formed by stacking a plurality of solid-state battery cells each including a positive electrode active material layer, a negative electrode active material layer, and a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer and in contact with the positive electrode active material layer and the negative electrode active material layer. The bipolar solid-state battery includes a positive electrode current collector and a negative electrode current collector on a side surface with respect to a stacking direction. Current collector plates and of the solid-state battery cells are arranged on at least one of a front surface serving as one end surface in the stacking direction and a rear surface serving as the other end surface in the stacking direction.

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Wako, Japan

Sokichi Okubo