Waseda University

Panasonic Corporation

Samsung Sdi Co., Inc.

Idemitsu Petrochemical Co., Ltd.

Samsung Electronics Co., Ltd.

Nec Corporation

Nissan Chemical Industries Limited

Praxair Technology, Inc.

Nippon Oil Fats Co., Ltd.

Sumitomo Seika Chemicals Co., Ltd.

Yoshitomi Pharmaceutical Industries, Ltd.

Sagami Chemical Research Center

Union Carbide Industrial Gases Technology Corporation

National Aerospace Laboratory of Japan

Seisan Kaihatsu Kagaku Kenkyusho

Hiroyuki Nishide

Kenichi Oyaizu

Eishun Tsuchida

Takashi Sekiguchi

Fumiaki Kato

Takeyuki Yamaki

Naoki Hayashi

Kimihisa Yamamoto

Shingo Kambe

Naoki Sano

Satoshi Nakajima

Akira Takahashi

Michio Suzuka

Takahiro Tago

Shigeyuki Iwasa

Takuji Yoshimoto

Mitsuo Yaguchi

Atsuo Sonai

Hiroko Endo

Hiroyoshi Kawakami

Mitsutoshi Jikei

Yuichi Aihara

Kentaro Nakahara

Teruyuki Komatsu

Ryo Omoda

Etsuo Hasegawa

Takuma Kawai

Wonsung Choi

Shinji Takeoka

Shigemoto Abe

Kenji Honda

Nobutaka Fujimoto

Takashi Kurata

Hiroyuki Ohno

Kiyohide Matsui

Kei Saito

Satoshi Nakao

Yuji Kinpara

Natsuru Chikushi

Shun Hashimoto

Hiroki Yakushiji

Isao Shinohara

Kazuhiko Ishihara

Seokgwang Doo

Keisuke Asai

Sosuke Yamaguchi

Teruyuki Okayasu

Atsuo Sonal

Yasunori Yonekuta

Shu YHoshida

Shu Yoshida

Junya Katoh

Yukiko Sasame

Yuya Kambe

Rieko Kogure

Kouki Oka

Bjorn Winther-jensen

Irradiating a film of a thiophene polymer that is a pure organic compound with light allows the thiophene polymer film to act as a light absorber and catalyst that produces hydrogen peroxide from water and water-dissolved air (oxygen) at extremely high efficiency, and this film can work in alkaline water in which a film of a general-purpose inexpensive water-oxidizing catalyst, which is used as a counter electrode, is active. Provided is an environmentally compatible and simple method for producing hydrogen peroxide at extremely high efficiency, including combining a film of a catalyst for light absorption and oxygen reduction that consists of a thiophene polymer with a catalyst for water oxidation, immersing the combination in alkaline water, and irradiating the light-absorbing oxygen reduction catalyst film with light.

Hydrogen peroxide production method

A polymer includes a repeating unit represented by at least one of Formula 1a or Formula 1b:  wherein, in Formulae 1a or 1b, CYis a group represented by at least one of Formula 1-2 or Formula 1-4, CYis a group represented by Formula 1-3, and L, L, a1, and a2 are defined the same as in the specification, and  in Formulae 1-2, Formula 1-3, or 1-4, X, Y, R, R, Rto R, b1, b2, R, R, b21, b22, Z, Z, c1, and c2 are defined the same as in the specification.

Polymer, composite positive active material including the same, and lithium secondary battery including electrode including the positive active material

Materials having charge-storing properties and made variously of dipyridine-fused benzoquinones of formula (1) below or derivatives thereof, dipyridine-fused benzoquinones of formula (4) below or derivatives thereof, or dipyridine-fused benzoquinone skeleton-containing polymers are provided. In the formulas, Arand Arare each independently a pyridine ring that forms together with two carbon atoms on a benzoquinone skeleton, or a derivative thereof. When used as electrode active materials, these charge storage materials are capable of providing high-performance batteries possessing a high capacity, high rate characteristics and high cycle characteristics.

Charge storage material, electrode active material and secondary battery

A fused-ring quinone-substituted polynorbornene has recurring units of formula (1) and/or (2) below.  In formulas (1) and (2), Ais independently a substituent of formula (3) or (4) below, n is an integer from 1 to 6, and Ais a substituent of formula (5) or (6) below.  In formulas (3) to (6), each X is independently a single bond or a divalent group, and Arand Arare each independently an aromatic hydrocarbon ring or an oxygen atom or sulfur atom-containing aromatic heterocycle that forms together with two carbon atoms on a benzoquinone skeleton. This polymer has charge-storing properties and, when used as an electrode active material, is capable of providing a high-performance battery possessing high capacity, high rate characteristics and high cycle characteristics.

Fused-ring quinone-substituted polynorbornene, electrode active material and secondary battery

A ion-conductive fused-ring quinone polymer includes recurring units of formula (1) and/or (2) below wherein each X is independently a single bond or a divalent group, and Aand Aare each independently an aromatic hydrocarbon ring or an oxygen atom or sulfur atom-containing aromatic heterocycle that forms together with two carbon atoms on a benzoquinone skeleton. This polymer is a material having charge-storing properties which, when used as an electrode active material, is capable of providing a high-performance battery possessing high capacity, high rate characteristics and high cycle characteristics.

Ion-conductive fused-ring quinone polymer, electrode active material and secondary battery

In a secondary battery utilizing redox by a radical site, charge-discharge is carried out in such a manner that a lithium ion moves between a positive electrode and a negative electrode (rocking chair-type). An anion in an amount necessary for electrode doping during charge-discharge is made unnecessary, thereby reducing the amount of an electrolytic solution. A secondary battery with a large energy density is achieved. Provided is an electrode active material including at least one polymer including a radical site capable of being converted into a first cation, and an anion site capable of being bonded with the first cation or a second cation.

Electrode active material and secondary battery

The present invention provides a radical composition capable of suppressing elution of electrode components in an electrolyte solution when used in an electrode for a secondary battery, and a battery using the radical composition. The present invention relates to a radical composition including a pyrroline nitroxide polymer and polyethylene glycols.

Radical composition and battery using same

An electrochemical device including: a positive electrode including oxygen as a positive active material; a negative electrode including a lithium ion-intercalatable/deintercalatable material as a negative active material; and an electrolytic solution in fluid communication with the positive electrode and the negative electrode and including a solvent and an oxygen absorbing/desorbing material with an oxygen binding rate of about 60 to about 95% in a pure oxygen atmosphere.

Electrochemical device

A polymeric compound including a cross-linked backbone which is a product of a reaction between a multifunctional acrylate compound and a metal porphyrin derivative, wherein the metal porphyrin derivative has a first axial position and a second axial position, and further includes a basic coordination ligand coordinated at the first axial position of the metal porphyrin derivative.

Polymeric compound, oxygen permeable membrane, and electrochemical device

A photoelectric elementincludes a first electrode, an electron transport layer supporting a photosensitizer, a hole transport layer, and a second electrode, and these components are stacked in the above order. The electron transport layer is formed of an organic compound produced by electrolytic polymerization of a precursor having, within one molecule thereof, two or more moieties each having a structure represented by the following structural formula (1). The photoelectric elementincludes a gel layer composed of the organic compound and an electrolyte solution infiltrated into the organic compound.  (in structural formula (1), M is a cyano group, a fluoro group, a chloro group, or a bromo group, and Ais a counter-anion)

Photoelectric element, process for producing photoelectric element, and photosensitizer

A photoelectric conversion element () according to the present disclosure includes: a photoanode (); a counter electrode (); a solid compound layer () disposed between the photoanode () and the counter electrode (); a charge storage electrode () disposed at an interspace from the counter electrode (); and an electrolyte medium () being contained in the solid compound layer () and filling the interspace.

Photoelectric conversion element

The present invention provides an electrode composite that has a reaction interface with a large area and can constitute a photoelectric element having high electron transport properties between the reaction interface and the electrode. The electrode composite of the present invention includes a first electrode and a conductive particle layer stacked on the first electrode. The conductive particle layer includes conductive particles containing acicular particles. The conductive particle layer has a three-dimensional porous network structure that is formed by the interconnection of the conductive particles. The three-dimensional network structure is joined to the first electrode. The conductive particle layer contains pores having a pore size of 50 nm or more in a total volume of 50% or more based on the volume of all pores in the conductive particle layer.

Electrode composite and photoelectric element equipped therewith

A photoelectric conversion element having high photovoltaic conversion efficiency is provided. The photoelectric conversion element includes a first electrode, a second electrode arranged opposite to the first electrode, and an electron transport layer provided on a face of the first electrode, and the face is opposite to the second electrode. The photoelectric conversion element further includes a photosensitizer supported on the electron transport layer and a hole transport layer interposed between the first electrode and the second electrode. The electron transport layer contains a perylene imide derivative of [Chemical Formula 1]. 

A photoelectric element includes a first electrode; and a second electrode positioned so as to face the first electrode; and a semiconductor disposed on a face of the first electrode, the face being positioned so as to face the second electrode; and a photosensitizer carried on the semiconductor; and a first charge-transport layer interposed between the first electrode and the second electrode; and a second charge-transport layer interposed between the first charge-transport layer and the second electrode. The first charge-transport layer and the second charge-transport layer contain different oxidation-reduction materials. The oxidation-reduction material in the first charge-transport layer has an oxidation-reduction potential higher than an oxidation-reduction potential of the oxidation-reduction material in the second charge-transport layer.

Photoelectric element having stacked charge-transport layers

To provide a photoelectric element A including a first electrode, a second electrodearranged opposite to the first electrode, an electron transport layerprovided on a face of the first electrode, the face being opposite to the second electrode, a photosensitizersupported on the electron transport layer, and a hole transport layerinterposed between the first electrodeand the second electrode. The electron transport layerincludes a filled partcontaining an organic molecule.

Photoelectric element and method for producing the same

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Tokyo, Japan

Hiroyuki Nishide