Hitachi, Ltd.

Shin-kobe Electric Machinery Co., Ltd.

Sai Ogawa

Tadashi Fujieda

Yoshitaka Kojima

Yasuhisa Aono

Toyotaka Yuasa

Teruyoshi Abe

Shizuka Yamaguchi

Shinzou Ikeda

Mitsuru Kobayashi

Noriyuki Ohnaka

Seishin Kirihara

Hideyuki Arikawa

Masahiro Kasai

Shoichi Nakashima

Masayuki Doi

Mitsuo Haginoya

Kan Kitagawa

Yukihiko Wada

Kyozo Iwao

Masanari Oda

A positive electrode for a rechargeable lithium ion battery includes a mixture layer including a positive-electrode active material, a conducting agent, and a binder and a collector having the mixture layer formed on the surface thereof. The positive-electrode active material is a composite oxide having an olivine structure expressed by a formula LiMPO(where M represents a transition metal including at least one of Fe and Mn and a and x satisfy 0&#x3c;a&#x2266;1.1 and 0.9&#x2266;x&#x2266;1.1). The conducting agent includes fibrous carbon. A carbon coating layer is formed on the surface of the collector. A part of the positive-electrode active material and a part of the fibrous carbon enter pits formed in the carbon coating layer.

Positive electrode for rechargeable lithium ion battery, rechargeable lithium ion battery, and battery module

A positive electrode material for lithium secondary battery having high electron conductivity even at very low temperatures and a lithium secondary battery with the use of the positive electrode material are provided. The positive electrode material for lithium secondary battery has secondary particles formed of primary particles made of lithium complex oxides composited with ultrathin carbon fibers having lengths equal to or smaller than the diameters of the secondary particles of the positive electrode active material. The ultrathin carbon fibers have opposite ends from which an electrolytic solution moves in and out.

Positive electrode material for lithium secondary battery and lithium secondary battery

An electromagnetic wave absorber for use in the high frequency range above 1 Ghz and a composite member are characterized by the fact that magnetic metal grains are covered with ceramic above 20 volume %. Further, a method of manufacturing the electromagnetic absorber and the composite member is characterized by the fact that composite magnetic particles, in which a plurality of magnetic metal grains and ceramic are unified, are formed through a mechanical alloying method applied to a composite powder composed of magnetic metal powder and ceramic powder. The electromagnetic wave absorber can be used in a semiconductor device, an optical sending module, an optical receiving module, an optical sending and receiving module, an automatic tollgate in which erroneous operation due to electromagnetic wave disturbance is provided by use of the electromagnetic wave absorber.

Electromagnetic wave absorber, method of manufacturing the same and appliance using the same

A heat and oxidation resistive high strength material utilized in structural body parts subject to bleaching in high temperature/oxidative atmosphere, the body structure of a space vehicle, a combustor, the combustor for a gas turbine, a turbine blade, and a turbine nozzle, is presented. A method for producing this heat and oxidation resistive high strength material is also explained.

Heat and oxidation resistive high strength material and its production

The disclosure is concerned with a thermal land machine which comprises a heat resistant wall for confining a chamber; a heat resistant composite structure disposed in the chamber and in contact with a hot flowing gas; and an apparatus for introducing the hot gas toward the surface of the composite structure. The composite structure including a heat resistant substrate and a continuous refractory coating formed on the substrate and made of a ceramic material. The refractory coating includes at least two layers in a laminated structure each having fine cracks substantially extended in the direction of the thickness of each of the layers and filled with a refractory material in such a manner that the filled cracks in one layer are disconnected with the filled cracks in the adjacent layer. Therefore, the hot gas cannot permeate into the surface of the substrate.

Machine on ground provided with heat resistant wall used for isolating

Growing community of inventors

Tokai, Japan

Sai Ogawa