Ricoh Company, Ltd.

Shizuoka University

Tatsuya Dan

Naoto Abe

Hitoshi Kida

Yoshio Itoh

Tomomi Suzuki

Kohtaroh Ogino

Shun Goto

Hiromichi Kuriyama

Yuka Araki

Shuhei Takeshita

Tohru Moriya

Yasutaka Tanaka

To provide a non-aqueous electrolyte electricity-storage element including a positive electrode including a positive-electrode active material capable of inserting and releasing anions, a negative electrode including a negative-electrode active material capable of inserting and releasing cations, and a non-aqueous electrolyte, wherein the positive-electrode active material is porous carbon having pores having a three-dimensional network structure, and wherein a changing rate of a cross-sectional thickness of a positive electrode film including the positive-electrode active material defined by Formula (1) below is less than 45%.

Porous carbon having connecting mesopores and electrode

A non-aqueous electrolyte electricity-storage element which includes a positive electrode including a positive-electrode active material capable of inserting and releasing anions, a negative electrode including a negative-electrode active material, and a non-aqueous electrolyte, wherein the positive-electrode active material is formed of a carbonaceous material, and a surface of the carbonaceous material includes fluorine.

Non-aqueous electrolyte electricity-storage element including positive electrode having carbonaceous material with fluorine on surface

Non-aqueous electrolyte electricity-storage element

To provide a non-aqueous electrolyte storage element including a positive electrode including a positive-electrode active material capable of inserting and eliminating anions, a negative electrode including a negative-electrode active material, and a non-aqueous electrolyte, wherein the positive-electrode active material includes a carbon material which has a plurality of pores constituting a three-dimensional network structure and has a solid electrolyte interface (SEI) material on a surface of the carbon material.

Non-aqueous electrolyte storage element including positive electrode having solid electrolyte interface material on surface of carbon material

A toner, including: a binder resin; and calcium carbonate, wherein the toner has a molecular weight distribution having a main peak in a range of 1,000 to 10,000, and a half value width of the main peak is 8,000 to 30,000, where the molecular weight distribution is obtained by GPC (gel permeation chromatography) of THF soluble matter of the toner, and wherein the toner contains the calcium carbonate in an amount of 5% by mass to 35% by mass.

Toner, image forming apparatus, image forming method, and process cartridge

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Shizuoka, Japan

Tatsuya Dan