Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Jidosha Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Masaya Kawasumi

Naoki Hasegawa

Akane Okada

Arimitsu Usuki

Yu Morimoto

Yoshiaki Fukushima

Osami Kamigaito

Shinji Inagaki

Takumi Taniguchi

Toshio Kurauchi

Hisato Takeuchi

Atsushi Kamiya

Masao Kohzaki

Yoshitsugu Kojima

Satoru Yamamoto

Yoichi Hosokawa

Shigetoshi Sugiyama

Kyoko Tsusaka

Manabu Kato

Kazutaka Kimura

Hiromitsu Tanaka

Hirotaka Okamoto

Masayoshi Takami

Masaaki Tani

Mitsuru Nakano

Fusayoshi Miura

Toshihiko Yoshida

Kenji Imai

Shin-ichi Ogata

Michio Asukabe

Naohiro Hoshikawa

Akihiro Shinohara

Michiaki Kato

Megumi Fujimoto

Shiaki Hyodo

Takahisa Suzuki

Eishiro Toyoda

Tomohiro Takeshita

Greg Shafer

Yuko Murayama

An electrolyte having a structure where a fluorinated hydrophilic segment A represented by -E-[Rf-E]- and a hydrocarbon hydrophobic segment B are alternately bonded to each other through chemical bond and a production process therefor, and an electrolyte membrane, a production process therefor, a catalyst layer and a fuel cell using the same. Rf is a linear or a branched perfluoro chain having one or more carbon atoms, E, and Eare each a proton conductive portion represented by Formula &#x2014;(CONM)(CO)(SONM)(SO)&#x2014; (0&#x2266;i, 0&#x2266;i&#x2266;1, 0&#x2266;i, 0&#x2266;i&#x2266;1, 0&#x3c;i+i, ito iare each an integer, and M is proton, alkali metal, or alkali earth metal), 2&#x2266;m (m is an integer), and Rf, E, and Emay be each arbitrarily selected in the repeating unit.

Electrolyte, production process therefor, electrolyte membrane, production process therefor, catalyst layer and fuel cell

The membrane electrode assemblyhas an anode, a cathode, and an electrolyte membranedisposed between the anode and cathode; the anode and cathode are gas diffusion electrodes; the electrolyte membrane contains a solid electrolyte in which a plurality of pores with mean pore diameters of 1 to 30 nm are formed; and the solid electrolyte has a backbone comprising organic groups having one or more metal atoms, oxygen atoms bonded to the metal atoms, and carbon atoms bonded to the metal atoms or oxygen atoms, and also has functional groups with ion-exchange capabilities that are bonded to the organic groups in the pores.

Polymer electrolyte membrane with an inorganic backbone

A process for producing a crosslinked type or non-crosslinked type layered metal phosphonate compound including a reaction step of reacting two or more members selected from organic diphosphonic acids or monophosphonic acids, or derivatives thereof having predetermined conditions and a metal source capable of forming an ion of a hexacoordinate metal atom as a central atom (M) of a metal oxide octahedron upon reaction under the presence of a sulfuric acid catalyst, a crosslinked or non-crosslinked metal phosphonate compound obtained by the process, as well as a stock solution used for the synthesis of the crosslinked or non-crosslinked type layered metal phosphonate compound described above.

Crosslinked type layered metal phosphonate compound, production process therefor, non-crosslinked type layered metal phosphonate compound, production process therefor, as well as stock solution

Disclosed herein is a solid polymer electrolyte wherein protons of cation exchange groups contained in a perfluorinated electrolyte are partially replaced by metal ions. The metal ion is at least one metal ion selected from vanadium (V), manganese (Mn), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), iron (Fe), ruthenium (Ru), nickel (Ni), palladium (Pd), platinum (Pt), silver (Ag), cerium (Ce), neodymium (Nd), praseodymium (Pr), samarium (Sm), cobalt (Co), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), and erbium (Er) ions. Further disclosed is a solid polymer fuel cell using the solid polymer electrolyte.

Solid polymer electrolyte, solid polymer fuel cell and method for manufacturing the fuel cell

Disclosed herein is an ion conductive polymer comprising a unit represented by Formula (1) below:&#x2014;SO[NSO(M)]-&#x2003;&#x2003;(1) Further disclosed is an imide monomer represented by Formula (A) below:Z-SO[NSOM]-Z&#x2003;&#x2003;(A)

Ion conductive polymers and imide monomers

A polymer electrolyte of high durability consistent with the present invention is characterized as including a first repeating unit represented by a general formula&#x2014;{C(Z)(Z)&#x2014;C(Z)(Z&#x2014;SOH)}&#x2014;

Polymer electrolyte of high durability and a production process thereof

A Polymer Electrolyte Membrane is formed by hot air drying of a membrane formed with an acidic main-polymer having proton conductivity and capability of forming an electrolyte membrane (S), and then immersing it into a basic polymer solution to impregnate the membrane with the basic polymer (S). The basic polymer is introduced in a large quantity into a site acting as a proton conduction pass of the main-polymer to take charge of the proton conduction. Since in the Polymer Electrolyte Membrane, a base polymer takes charge of proton conduction as compared with the case where proton takes charge of the proton conduction as a hydrate, the base polymer shows favorable proton conductivity even in a low humidity state at an elevated temperature exceeding boiling point of water.

Polymer electrolyte membrane and method of production thereof

The present invention is a grafted polymer electrolyte membrane prepared by first preparing a precursor membrane comprising a polymer which is capable of being graft polymerized, exposing the surface of the precursor membrane to a plasma in an oxidative atmosphere, then graft-polymerizing a side chain polymer to the plasma treated precursor membrane and introducing a proton conductive functional group to the side chain. The resulting grafted polymer electrolyte membrane has excellent stability and performance when used in a proton-exchange membrane fuel cell or for electrolysis of water.

Grafted polymer electrolyte membrane, method of producing a grafted polymer electrolyte membrane, and fuel cell comprising the same

Disclosed is a membrane electrode assembly obtained by bonding electrodes to both surfaces of a solid polymer electrolyte membrane suitably for use in a solid polymer fuel cell. In order to maintain not only the solid polymer electrolyte but also the electrode in appropriate wet states, the catalyst layer of the assembly contains a metalloxane polymer in the intra-catalyst-layer electrolyte including an electrode catalyst preferably in an amount of 0.5 to 50 wt % of the total weight of the intra-catalyst-layer electrolyte and the metalloxane polymer contained therein exclusive of the electrode catalyst.

Membrane electrode assembly, and solid polymer fuel cell using the assembly

In solid polymer electrolyte having high-durability, comprising a polymer electrolyte material having a hydrocarbon part, a chelate group and an electrolyte group are introduced into the polymer electrolyte material. The chelate group contains a phosphonic acid group, nitrogen, both of nitrogen and a phosphonic acid group (one or more selected from the group consisting of alkylamino monophosphonic acid groups, alkylamino diphosphonic acid groups, dialkylamino monophosphonic acid groups, alkylalkylene diamine triphosphonic acid groups, and alkylimino phosphonic acid groups) or, both of nitrogen and a carboxylic acid group (one or more selected from the group consisting of alkylamino monocarboxylic acid groups, alkylamino dicarboxylic acid groups, dialkylamino monocarboxylic acid groups, alkylalkylene diamine tricarboxylic acid groups, and alkylimino carboxylic acid groups).

Solid polymer electrolyte having high-durability

Composite material with high mechanical strength and excellent high-temperature characteristics comprising a polymer matrix containing polyamide and layers of a silicate uniformly dispersed in the order of molecules in the polymer matrix, each of said silicate layers being 7 to 12 &angst; thick and the interlayer distance being at least 20 &angst;; and a process for manufacturing such composite material.

Composite material and process for manufacturing same

The resin composite of this invention comprises an organophilic clay and a polymer. The polymer is formed of two or more polymers at least one of which has a functional group, or the polymer is formed of a copolymer having a functional group. This structure provides the resin composite which can be easily made composite with a wide range of applications, and imparts the optimum physical properties to the composite.

Resin composite

A resin composite comprising an organophilic clay and an ionomer resin is provided. The organophilic clay is dispersed in the ionomer resin to have excellent mechanical properties. A method for producing a resin composite comprises the steps of adding an organophilic clay to an ionomer resin, melting the mixture of the clay and the ionomer resin by heating and shearing the mixture.

Resin composite and method for producing the same

An optical device employs a composite of a liquid crystalline substance and an orientation-sustaining material, such as a selected polymer, flat particles, or other material capable of sustaining the state of orientation of the liquid crystalline substance. The optical device has a memory function which is erased by the application of an electrical signal. External force for writing on the device generates local changes of the state of orientation of the liquid crystalline substance. The written display is memorized, and can be erased by the application of an electrical signal. When a two-frequency-driving liquid crystalline substance is used, the device has a long-term memory function. In this device, writing can be conducted at one frequency and erasure easily conducted at the other frequency. These optical devices can be used for light adjustment, display, and data storage.

Optical device with memory function employing liquid

This invention provides liquid crystal compositions for light controlling materials of light scattering type having both memory and high speed response characteristics. The composition neither needs a temperature controlling device nor a device for imparting a shear stress as a memory erasing device, because the composition comprises a two-frequency addressing liquid crystal or such liquid crystal with an ionic component. The two-frequency addressing liquid crystal responds to an electric field and exhibits a positive dielectric anisotropy or a negative dielectric anisotropy depending on the frequency region of the electric field. Because the flat shaped particles of the present invention exhibit an affinity with the liquid crystal, the particles are dispersed in the liquid crystal and form liquid crystal domains effectively.

Growing community of inventors

Anjyo, Japan

Masaya Kawasumi