Mitsubishi Chemical Corporation

Hiroyuki Imura

Naoto Kijima

Masayoshi Mikami

Takatoshi Seto

Masahiko Yoshino

Kenji Shizuka

Kyota Ueda

Kenji Okahara

Kaoru Terada

Motoyuki Shigeiwa

Satoshi Shimooka

Kentaro Horibe

Yuusuke Sinmen

Kento Miura

There is provided a powder of a lithium transition-metal compound for a positive-electrode material in a lithium secondary battery, in which the use of the powder as that of a positive-electrode material in a lithium secondary battery achieves a good balance among improvement in battery performance, cost reduction, resistance to a higher voltage, and a higher level of safety. The powder of the lithium transition-metal compound for a positive-electrode material in a lithium secondary battery is characterized in that in a mercury intrusion curve obtained by mercury intrusion porosimetry, the amount of mercury intruded is in the range of 0.8 cm/g to 3 cm/g when the pressure is increased from 3.86 kPa to 413 MPa.

Lithium transition metal-based compound powder for positive electrode material in lithium rechargeable battery, method for manufacturing the powder, spray dried product of the powder, firing precursor of the powder, and positive electrode for lithium rechargeable battery and lithium rechargeable battery using the powder

To provide a green phosphor with high conversion efficiency of blue of near-ultraviolet light and excellent color purity, a multinary oxynitride phosphor represented by the general formula [I] is proposed.M1BaM2LON&#x2003;&#x2003;[I]In the formula [I], Mrepresents Cr, Mn, Fe, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, Mrepresents Sr, Ca, Mg and Zn, L represents metal elements belonging to the fourth group or the fourteenth group of the periodic table, and x, y, z, u, v and w are the numeric values in the following ranges:0.00001&#x2266;&#x2266;30&#x2266;&#x2266;2.999992.6&#x2266;&#x2266;30&#x3c;&#x2266;116&#x3c;&#x2266;250&#x3c;&#x2266;17.

Multinary oxynitride phosphor, and light emitting device, image display, illuminating device and phosphor-containing composition using the same, and multinary oxynitride

An object of the present invention is to provide a high-efficiency red light emitting phosphor and white light emitting phosphor for using in a display or lighting which high-efficiently emits light in combination with a light source which emits light in the region from near-ultraviolet light to visible light. The present invention relates to a phosphor having a crystal phase having a specified chemical composition.

Phosphor and including the same, light emitting apparatus, illuminating apparatus and image display

Growing community of inventors

Yokohama, Japan

Hiroyuki Imura