Asahi Kasei Kabushiki Kaisha

Hiroyuki Saeki

Nobuhiro Ito

Kunio Matsui

Yoshiyuki Ishii

A purpose of the present disclosure is to provide nonaqueous electrolyte battery inorganic particles that enable provision of a nonaqueous electrolyte battery having excellent properties of safety and service life. Another purpose of the present disclosure is to provide an efficient and effective method for inspecting the metal absorption ability of nonaqueous electrolyte battery inorganic particles.

Nonaqueous electrolyte battery inorganic particles, and nonaqueous electrolyte battery using these

The purpose of the present invention is to provide a nonaqueous electrolyte battery having excellent lifespan characteristics and/or excellent safety, which are essential in practice. The basic inorganic particles for a nonaqueous electrolyte battery according to the present invention include basic inorganic particles, wherein a hydrophilicity parameter A for the basic inorganic particles satisfies the expression: 0.45&#x2264;A(BET1/BET2)&#x2264;2.0. In the expression, BET1 represents the specific surface area of the basic inorganic particles calculated from an adsorption isotherm which is measured through adsorption of water vapor to the basic inorganic particles by a BET method. BET2 represents the specific surface area of the basic inorganic particles calculated from an adsorption isotherm which is measured through adsorption of nitrogen to the basic inorganic particles by a BET method.

Inorganic particles for nonaqueous electrolyte battery

The nonaqueous electrolyte battery inorganic particles according to the present invention include a metal element having a smaller electronegativity than manganese in a crystal structure, and comprise a laminar compound which has an interlayer distance of 0.40-2.0 nm or less and which has exchangeable cations other than hydrogen ions between the layers.

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Tokyo, Japan

Hiroyuki Saeki