Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Jidosha Kabushiki Kaisha

Naoki Hasegawa

Masaya Kawasumi

Arimitsu Usuki

Akane Okada

Yu Morimoto

Hirotaka Okamoto

Fusayoshi Miura

Akihiro Shinohara

Makoto Kato

Yoshiaki Fukushima

Yuki Sato

Motoki Hiraoka

Takumi Taniguchi

Kazuhisa Yano

Atsushi Kamiya

Yoichi Hosokawa

Atsushi Murase

Rui Imoto

Satoru Yamamoto

Kumiko Nomura

Tomohiro Takeshita

Kyoko Tsusaka

Manabu Kato

Shinji Inagaki

Norio Sato

Kazutaka Kimura

Hiromitsu Tanaka

Masayoshi Takami

Koji Yamada

Hisato Takeuchi

Junji Nakanishi

Masaaki Tani

Toshio Kurauchi

Mitsuru Nakano

Noriyuki Kitao

Kenji Imai

Takashi Asano

Toshihiko Yoshida

Yuuki Kasama

Naohiro Hoshikawa

Susumu Yamaguchi

Masami Okamoto

Yuta Ikehata

Shiaki Hyodo

Tadashi Kawamoto

Eishiro Toyoda

Greg Shafer

Yuko Murayama

Takahisa Suzuki

Yunan Wang

Mesoporous carbon has a connecting structure in which primary particles made of carbon particles having primary pores with a primary pore diameter of less than 20 nm are connected. In the mesoporous carbon, the pore capacity of secondary pores with secondary pore diameters within a range of 20 nm to 100 nm, which is measured by a mercury intrusion method, is 0.42 cm/g or more and 1.34 cm/g or less. In addition, the mesoporous carbon has a linearity of 2.2 or more and 2.6 or less. An electrode catalyst for a fuel cell includes the mesoporous carbon and catalyst particles supported in the primary pores in the mesoporous carbon. Furthermore, a catalyst layer includes the electrode catalyst for the fuel cell and a catalyst layer ionomer.

Mesoporous carbon, electrode catalyst for fuel cell, catalyst layer, fuel cell, and method for producing mesoporous carbon

Mesoporous carbon has a beaded structure in which primary particles with mesopores are linked. In the mesoporous carbon, an average primary particle size is 7 nm or more and 300 nm or less, a pore diameter is 2 nm or more and 10 nm or less, an average thickness of pore walls is 3 nm or more and 15 nm or less, a pore volume is 0.2 mL/g or more and 3.0 mL/g or less, and a tap density is 0.03 g/cmor more and 0.3 g/cmor less. In a polymer electrolyte fuel cell, the mesoporous carbon is used as a catalyst carrier for at least an air electrode catalyst layer. The mesoporous carbon can be obtained by impregnating mesoporous silica satisfying a predetermined condition with a carbon source, performing polymerization and carbonization, and removing a template.

Mesoporous carbon and manufacturing method of the same, and polymer electrolyte fuel cell

A membrane electrode gas diffusion layer assembly for a fuel cell includes a membrane electrode assembly including an electrolyte membrane, an anode catalyst layer, and a cathode catalyst layer, an anode diffusion layer joined to the anode catalyst layer of the membrane electrode assembly, and a cathode diffusion layer joined to the cathode catalyst layer of the membrane electrode assembly, in which at least one of the anode diffusion layer and the cathode diffusion layer includes a microporous layer that makes contact with the membrane electrode assembly, the microporous layer contains a cerium compound, and at least one of the electrolyte membrane, the anode catalyst layer, and the cathode catalyst layer comprises cerium ions.

Membrane electrode gas diffusion layer assembly and manufacturing method thereof

An electroplating cell includes: an anode chamber in which an anode chamber solution is stored; and a separator that separates the anode chamber and a cathode. The electroplating cell undergoes a modification treatment of introducing a carboxylic acid group or a derivative thereof into a base material of the separator. The separator selectively allows permeation of metal ions contained in the anode chamber solution.

Electroplating cell, and method of forming metal coating

An electroplating cell includes: (i) an anode chamber in which an anode chamber solution is stored; and (ii) a separator that includes a base material and an organic plating additive contained in the base material, separates the anode chamber and a cathode from each other, and selectively allows permeation of metal ions contained in the anode chamber solution.

Electroplating cell, and metal coating and method of forming the same

There are provided a surface modified material comprising a base material, and one or more kinds of sulfonimide compound groups bonded onto the surface of the base material via one or more linking groups -A-Y'&#x2014; (A is a direct bond or an organic group. Y&#x2032; is a bonding site with the base material.); the sulfonimide compound group comprising, in its molecular structure, one or more linking groups -A-Y&#x2032;&#x2014; and two or more sulfonimide groups; as well as a fuel cell using the surface modified material for a catalyst layer. There is also provided a sulfonimide compound for surface modification comprising one or more reactive end groups -A-Y (A is a direct bond or an organic group. Y is a reactive functional group.) and two or more sulfonimide groups.

Surface modified material, sulfonimide compound for surface modification, and fuel cell

Provided is an electrolyte equipped with a hydrophilic portion having a cyclic quaternary ammonium salt and a hydrophobic portion bonded to the hydrophilic portion; and a fuel cell, a Li secondary battery, secondary battery and a primary battery using the electrolyte. The electrolyte has preferably a structure represented by the formula (A) or (B), wherein P' represents a hydrophobic portion, Rand Reach represents hydrogen, fluorine, a hydroxy group, or a hydrocarbon or fluorinated hydrocarbon group having from 1 to 10 carbon atoms, Rand Reach represents a hydrocarbon, fluorinated hydrocarbon, or a fluorocarbon group having from 1 to 10 carbon atoms, r and s each represents an integer of 0 or greater but not greater than 8 and satisfies 1&#x2266;r+s&#x2266;8, u represents an integer and satisfies 2&#x2266;u&#x2266;9, and Xrepresents a counter anion. 

Electrolyte, and fuel cell, Li secondary battery, secondary battery and primary battery using the electrolyte

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

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

Process for producing polymer/filler composite material

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

Growing community of inventors

Kasugai, Japan

Naoki Hasegawa