Murata Manufacturing Co., Ltd.

Murata Manufacturingco., Ltd.

Toshitsugu Ono

Kazuhito Hatta

Moriaki Okuno

Keiichi Kagami

Nobuaki Shimosaka

Keizo Koga

Provided is a separator including: a substrate; and a surface layer formed on at least one surface of the substrate, and having a higher porosity than that of the substrate. It is preferable that the surface layer includes: a first layer having convexities and concavities existing as cavities; and a second layer formed between the first layer and the separator, and the second layer has a higher porosity than that of the substrate, and the first layer has a higher porosity than that of the second layer. In this case, it is preferable that the porosity of the substrate is from 25% to 40%, the porosity of the first layer is from 60% to 90%, and the porosity of the second layer is from 40% to 65%.

Separator, battery, battery pack, electronic apparatus, electric vehicle, power storage device, and electric power system

A separator includes a substrate layer that is porous, and a surface layer that is provided on at least one main face of the substrate layer and that has an uneven shape. The surface layer includes first particles that are for forming convexities of the uneven shape and that are a main component of the convexities, second particles that have a smaller average particle size than the first particles, cover at least a part of a surface of the first particles, and cover at least a part of a surface of the substrate layer that is exposed between the first particles, and a resin material.

Separator, nonaqueous electrolyte battery, battery pack, electronic device, electric vehicle, power storage device, and power system

A gel electrolyte layer is provided between a positive electrode and a second electrode. The gel electrolyte layer is a layer containing particles, a resin material, and a polymer compound for retaining the resin material, and having a heat capacity per unit area of 0.0001 J/Kcmor more and a heat capacity per unit volume of 3.0 J/Kcmor less.

Battery, electrolyte layer, battery pack, electronic apparatus, electric vehicle, power storage device, and electric power system

The present invention relates to a layer disposed between a positive electrode and a negative electrode, which is a layer containing particles and a resin material, and having a porous structure with a heat capacity per unit area of 0.0001 J/Kcmor more and a heat capacity per unit volume of 3.0 J/Kcmor less.

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Fukushima, Japan

Toshitsugu Ono