Asahi Kasei Kabushiki Kaisha

Kunio Matsui

Tadashi Shimizu

Nobuhiro Ito

Hiroyuki Saeki

Yoshiyuki Ishii

Hiroyoshi Matsuyama

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.

Nonaqueous electrolyte battery inorganic particles and nonaqueous electrolyte battery

Disclosed is a cured form of calcium silicate, mainly comprising tobermorite and exhibiting a powder X-ray diffraction pattern in which the diffraction peak intensity Ib ascribed to the (220) plane of the tobermorite and the minimum diffraction intensity Ia observed in the diffraction angle range between the two diffraction peaks respectively ascribed to the (220) plane and (222) plane of the tobermorite satisfy the relationship Ib/Ia&#x2267;3.0; a differential pore distribution curve obtained by mercury porosimetry in which the logarithmic width of the pore diameter distribution as measured at a height of &#xbc; of the height of the maximum peak of the differential pore distribution curve is from 0.40 to 1.20, and also disclosed is a reinforced calcium silicate composite structure, and methods for producing same. The cured form of calcium silicate and the reinforced calcium silicate composite structure of the present invention which, while exhibiting an apparent specific gravity of from 0.14 to 1.0 (and, hence, having a light weight), exhibit excellent properties as a building material, such as a high strength, a high modulus of elasticity, a high resistance to the neutralization reaction, a high dimensional stability, and a high resistance to chipping.

Hardened calcium silicate having high strength

The invention relates to a hardened calcium silicate material characterized by having Ib/Ia which is greater than 3 (wherein Ib represents the diffraction peak intensity of the tobermorite (220) plane in powdery X-ray diffractometry; and Ia represents the minimum diffraction intensity in the angle region located between two diffraction peaks in the tobermorite (220) and (222) planes;), having a specific gravity of 0.2 or more but less than 0.7, and being substantially free from bubbles having a maximum diameter exceeding 200 &mgr;m; and a process for producing the same.

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Tokyo, Japan

Kunio Matsui