Kabushiki Kaisha Toyota Jidoshokki

National Institute of Advanced Industrial Science and Technology

Ehime University

Keio University

Dow Corning Toray Company, Ltd.

Gunma University

Arakawa Chemical Industries, Ltd.

Hitotoshi Murase

Toshihisa Shimo

Manabu Miyoshi

Junichi Niwa

Keiichi Hayashi

Takahiro Sugioka

Tetsuo Sakai

Yuichi Hirakawa

Takuhiro Miyuki

Takayuki Kato

Noriyuki Shintoku

Akio Saiki

Toshikatsu Kojima

Shinfuku Nomura

Akira Kojima

Hiromichi Toyota

Noriaki Baba

Ryota Isomura

Naoto Yasuda

Tetsuji Yamaguchi

Makoto Kato

Yoshiaki Fukushima

Takayuki Hirose

Manabu Sugiura

Kazuyuki Nakanishi

Takahiro Hoshida

Katsufumi Tanaka

Hideo Tachikawa

Kyoichi Kinoshita

Masataka Nakanishi

Masaaki Tani

Kenzo Fukumori

Shinji Suzuki

Kazuhito Kawasumi

Takashi Iseki

Takao Kobayashi

Atsushi Saito

Hiroaki Takashima

Toshio Otagiri

Ken-ichi Suzuki

Shin-ichi Tobishima

Hideyuki Morimoto

Shuichi Yasuda

Masami Osako

Masahiro Suzuki

Jiro Yamashita

Hideaki Ishikawa

Kazuhiro Izumoto

Osamu Ohmori

Akiko Shima

Kimihisa Yamamoto

Tsunehiro Maehara

Hiroshi Yamashita

Makoto Kuramoto

Yasue Okuyama

Shin-Ichi Tobishima

Ken-Ichi Suzuki

Hideki Goda

Sugioka Takahiro

It is an assignment to be solved to provide an electrode for secondary battery, electrode in which the active material is suppressed from coming off or falling down from the electricity collector, and that has excellent cyclic performance. It is characterized in that, in an electrode for secondary battery, the electrode being manufactured via an application step of applying a binder resin and an active material onto a surface of electricity collector, said hinder resin is an alkoxysilyl group-containing resin that has a structure being specified by formula (I): 

Process for manufacturing electrode for secondary battery

Provided is a negative-electrode active material, which is capable of constituting a lithium ion secondary cell exhibiting excellent cell characteristics. The negative-electrode active material for a lithium ion secondary cell of the invention includes a mixed material of silicon oxide particles composed of silicon oxide and rod-shaped iron oxide particles composed of iron oxide. It is preferable to use iron oxide particles having a plurality of pores in a surface, and an electrode reaction is effectively carried out.

Lithium ion secondary cell

To provide a lithium ion secondary battery electrode in which a coated layer is held on a surface of an active material layer over a long period of time to suppress decomposition of the electrolysis solution and to enhance the cyclability, a manufacturing process for the same, and a lithium ion secondary battery using the electrode. A lithium ion secondary battery electrode includes a current collector, an active material layer containing a binder formed on a surface of the current collector, and a coated layer formed on the surface of at least a part of the active material layer, wherein the coated layer is an acrylic type copolymer cured substance including an acrylic type main chain and a side chain having polyester or polyether graft-polymerized to the acrylic type main chain and the coated layer is chemically bonded with the binder.

Lithium secondary battery electrode including coated layer having acrylic copolymer chemically bonded to binder of active material layer and manufacturing process for the same

A production process for lithium-silicate-based compound according to the present invention is characterized in that: a lithium-silicate compound being expressed by Li2SiO3 is reacted with a transition-metal-element-containing substance including at least one member being selected from the group consisting of iron and manganese at 550&#xb0; C. or less within a molten salt including at least one member being selected from the group consisting of alkali-metal nitrates as well as alkali-metal hydroxides in an atmosphere in the presence of a mixed gas including carbon dioxide and a reducing gas. In accordance with the present invention, it is possible to produce lithium-silicate-based materials, which are useful as a positive-electrode active material for lithium-ion secondary battery, and the like, at low temperatures by means of relatively easy means.

Production process for lithium-silicate-based compound

To provide a lithium ion secondary battery electrode in which a coated layer is held on a surface of an active material layer over a long period of time to suppress decomposition of the electrolysis solution and to enhance the cyclability, a manufacturing process for the same, and a lithium ion secondary battery using the electrode. A lithium ion secondary battery electrode includes a current collector, an active material layer containing a binder formed on a surface of the current collector, and a coated layer formed on the surface of at least a part of the active material layer, wherein the coated layer contains a silicone-acrylic graft copolymer cured substance including an acrylic type main chain having a functional group and a side chain having a silicone graft-polymerized to the acrylic type main chain, and the coated layer is chemically bonded with the binder.

Lithium ion secondary battery electrode, manufacturing process for the same, and lithium ion secondary battery using the electrode

The present invention is one which provides a production process for lithium-silicate-system compound, the production process being characterized in that: a lithium-silicate compound being expressed by LiSiOis reacted with a substance including at least one member of transition-metal elements that is selected from the group consisting of iron and manganese at 400-650&#xb0; C. in a molten salt of a carbonate mixture comprising lithium carbonate and at least one member of alkali-metal carbonates that is selected from the group consisting of potassium carbonate, sodium carbonate, rubidium carbonate and cesium carbonate in a mixed-gas atmosphere including carbon dioxide and a reducing gas; and a positive-electrode active material for lithium-ion secondary battery that comprises a lithium-silicate-system compound being obtained by the aforesaid process.

Production process for lithium-silicate-system compound

To provide a lithium ion secondary battery electrode in which a coat is held on a surface of an active material layer over a long period of time to suppress decomposition of the electrolysis solution and to enhance the cyclability, a manufacturing process for the same, and a lithium ion secondary battery using the electrode. A lithium ion secondary battery electrode includes a current collector, an active material layer containing a binder formed on a surface of the current collector, and a coat containing modified polydimethylsiloxane formed on a surface of at least a part of the active material layer, wherein the coat is chemically bonded with the binder.

Providing a noble negative-electrode active material including silicon, and a production process for the same. A negative-electrode active material for non-aqueous-system secondary battery including a silicon phase and a composite oxide phase (a CaSiOphase, for instance) is obtained by mixing a silicon oxide (SiO, for instance) with a silicon compound (CaSi, for instance), which includes silicon and at least one member of elements being selected from the group consisting of Group 2 (or Group 2A) elements in the Periodic Table, to prepare a mixed raw material, and then reacting the mixed raw material. The composite oxide phase demonstrates the advantage of inhibiting electrolytic solutions from decomposing in a smaller amount than does the conventional SiOphase.

Negative-electrode active material for non-aqueous-system secondary battery and production process for the same

A production process for composite oxide expressed by a compositional formula: LiMnAO, where 'A' is one or more kinds of metallic elements other than Mn; and 0&#x2266;'x'&#x3c;1, obtained by preparing a raw-material mixture by mixing a metallic-compound raw material and a molten-salt raw material with each other, the metallic-compound raw material at least including an Mn-containing nitrate that includes one or more kinds of metallic elements in which Mn is essential, the molten-salt raw material including lithium hydroxide and lithium nitrate, and exhibiting a proportion of the lithium nitrate with respect to the lithium hydroxide (Lithium Nitrate/Lithium Hydroxide) that falls in a range of from 1 or more to 3 or less by molar ratio; reacting the raw-material mixture at 500&#xb0; C. or less by melting it; and recovering the composite oxide being generated from the raw-material mixture that has undergone the reaction.

Production process for composite oxide, positive-electrode active material for lithium-ion secondary battery and lithium-ion secondary battery

Provided is a sulfur-modified polyacrylonitrile manufacturing method that is characterized in that a starting base powder that comprises sulfur powder and polyacrylonitrile powder is mixed and the mixture is heated in a non-oxidizing environment while outflow of sulfur vapor is prevented. Also provided are a cathode for lithium batteries that uses, as the active substance, the sulfur-modified polyacrylonitrile manufactured with the method, and a lithium secondary battery that includes the cathode as a component element. This enables the practical use of an inexpensive sulfur-based material as the cathode material for lithium secondary batteries, and in particular, a sulfur-based cathode material that enables higher output and has excellent cycle life characteristics, as well as other characteristics, and secondary lithium batteries using the same can be obtained.

Sulfur-modified polyacrylonitrile, manufacturing method therefor, and application thereof

Provided is a condensed polycyclic aromatic compound, having lithium ion responsivity and is suitable for lithium ion secondary battery applications, a production process thereof, a positive electrode active material containing that condensed polycyclic aromatic compound, and a positive electrode for a lithium ion secondary battery provided therewith, and further provided is a lithium ion secondary battery, having high capacity and cycling adaptability, that has the positive electrode as a constituent thereof. The condensed polycyclic aromatic compound has at least four imino groups in a molecule thereof.

Condensed polycyclic aromatic compound, production process of same, and positive electrode active material for lithium ion secondary battery containing same

A composite oxide is produced via the following: a raw-material mixture preparation step of preparing a raw-material mixture by mixing a metallic-compound raw material and a molten-salt raw material with each other, the metallic-compound raw material at least including one or more kinds of Mn-containing metallic compounds being selected from the group consisting of oxides, hydroxides and metallic salts that include one or more kinds of metallic elements in which Mn is essential, the molten-salt raw material including lithium hydroxide and lithium nitrate, and exhibiting a proportion of the lithium hydroxide with respect to the lithium nitrate (i.e., (Lithium Hydroxide)/(Lithium Nitrate)) that falls in a range of from 0.05 or more to less than 1 by molar ratio; a molten reaction step of reacting said raw-material mixture at from 300&#xb0; C. or more to 550&#xb0; C. or less by melting it: and a recovery step of recovering said composite oxide being generated from said raw-material mixture that has undergone the reaction.

A negative electrode for a lithium-ion secondary battery, has a current collector and an active-material layer bound on a surface of the current collector. The active-material layer includes active materials, binders, conductive additives, and buffer materials. The active materials include Si and/or Sn, and the buffer materials comprise a silicone composite powder in which a spherical silicone-rubber powder is covered with a silicone resin.

Negative electrode for lithium-ion secondary battery and manufacturing process for the same

An in-liquid plasma electrode according to the present invention is an in-liquid plasma electrode for generating plasma in a liquid and has an electrically conductive member having an electric discharge end surface in contact with the liquid, and an electrically insulating member covering an outer periphery of the conductive member at least except the electric discharge end surface. Preferably, d and x satisfy &#x2212;2d&#x2266;x&#x2266;2d, where d is a length of a minor axis of the cross section when a conductive end portion of the electrically conductive member having the electric discharge end surface has an approximately circular cross section, or d is a length of a short side of the cross section when the conductive end portion has an approximately rectangular cross section, and x is a distance from a reference plane to a plane containing the electric discharge end surface when the reference plane is an end surface of the electrically insulating member that is approximately parallel with the electric discharge end surface. Owing to this construction, it is possible to provide an in-liquid plasma electrode which can simply generate plasma in a wide variety of liquids including a conductive liquid such as water and alcohol, and furthermore an in-liquid plasma generating apparatus having this electrode, and an in-liquid plasma generating method using this electrode.

In-liquid plasma electrode, in-liquid plasma generating apparatus and in-liquid plasma generating method

The process for producing an amorphous carbon film of the present invention is a process for producing an amorphous carbon film comprising contacting a surface of a substrate S with bubbles B which have been formed in a liquid L containing an organic compound and inside which plasma has been generated, so as to form an amorphous carbon film on the surface of the substrate S, and the liquid L contains one or more selected from phenols and alcohols having a carbon number of from 1 to 12. According to the present invention, a hard amorphous carbon film can be formed easily.

Process for producing an amorphous carbon film

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Kariya, Japan

Hitotoshi Murase