Waseda University

Panasonic Corporation

Nissan Chemical Industries Limited

Nec Corporation

Samsung Electronics Co., Ltd.

Nippon Shokubai Co., Ltd.

Japan Science and Technology Corporation

Sumitomo Seika Chemicals Co., Ltd.

Nissan Chemical Corporation

Kenichi Oyaizu

Hiroyuki Nishide

Takashi Sekiguchi

Michio Suzuka

Fumiaki Kato

Takeyuki Yamaki

Naoki Hayashi

Naoki Sano

Takuji Yoshimoto

Mitsuo Yaguchi

Akira Takahashi

Takeo Kawase

Shingo Kambe

Shigeyuki Iwasa

Kentaro Nakahara

Takuma Kawai

Wonsung Choi

Eishun Tsuchida

Nobutaka Fujimoto

Kei Saito

Takahiro Kaseyama

Satoshi Nakao

Yuji Kinpara

Hiroki Yakushiji

Shun Hashimoto

Teruhisa Fujibayashi

Seokgwang Doo

Jun-ichi Nakamura

Kan Hatakeyama

Choitsu Go

Yuya Kambe

Tomoki Akahane

Motoyasu Hirai

Yushun Sun

Sosuke Yamaguchi

Yosuke Kumaki

Kanta Matsushima

The present invention aims to provide a polymeric material having reduced coloration in the visible light region, a high refractive index, and low optical dispersion. The present invention relates to a polymeric material having a sulfoxide structure in a main chain.

Polymeric material, production method therefor, and polymeric material composition

Provided is an electrode material which is suitable for use as a material for forming electrodes for use in lithium ion secondary batteries, etc. and which makes it possible to heighten the rate characteristics of batteries. The electrode material is characterized by comprising a polymer having, in a side chain, a fluoflavin skeleton such as that shown by the formula and an inorganic active material, the polymer being contained in an amount of 1 mass % or less with respect to the solid components.

Electrode material

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

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

Provided is a photoelectric element that includes an electron transport layer having excellent electron transport properties and a sufficiently large reaction interface and has low resistance loss and excellent conversion efficiency between light and electricity. The photoelectric element includes a first electrode, a second electrode, an electron transport layerand a hole transport layerinterposed between the first electrodeand the second electrode, an electrolyte solution, and a sensitizing dye. The electron transport layerincludes an organic compound having an oxidation-reduction site capable of repeated oxidation-reduction. The electrolyte solution serves to stabilize a reduction state of the oxidation-reduction site. The organic compound and the electrolyte solution form a gel layer. The sensitizing dye is provided in contact with the electron transport layer. The hole transport layercontains a charge transporter serving to reduce an oxidized form of the sensitizing dye and having a number average molecular weight of 2,000 or more and 100,000 or less.

Photoelectric element

Growing community of inventors

Tokyo, Japan

Kenichi Oyaizu