Nitto-denko Corporation

Koso Matsuda

Takeshi Nakano

Hiroyuki Nishii

Mizuki Yamamoto

Takashi Suzuki

Hiroyuki Katayama

Terukazu Ihara

Hirokazu Matsuda

Satoru Suzuki

Shinya Nishiyama

Kensuke Tani

Provided is a carbon-dioxide capture and treatment system comprising: a carbon dioxide-enriched mixture gas generation device comprising a separation membrane capable of increasing a carbon dioxide concentration of a mixture gas taken therein, thereby generating a carbon dioxide-enriched mixture gas; a carbon dioxide conversion device configured to convert carbon dioxide in the enriched mixture gas received from the carbon dioxide-enriched mixture gas generation device, into a chemically stable compound; a final treatment device comprising an adsorbent, wherein the final treatment device is configured to adsorb the carbon dioxide by the adsorbent, thereby separating the carbon dioxide from other gas components; and a carbon dioxide direct capture device configured to take in air contained in an ambient environment, and supply the taken-in air to the final treatment device or an upstream side thereof in the carbon-dioxide capture and treatment system.

Carbon-dioxide capture and treatment system and carbon-dioxide negative emissions plant

The electrolyte membrane of the present disclosure includes a phase A forming a matrix phase, and a phase B. The phase B is continuous from a first principal surface of the electrolyte membrane to a second principal surface of the electrolyte membrane opposite to the first principal surface. The phase B includes a graft polymer having a main chain and a graft chain. The graft chain has a functional group having anion-exchange ability. The main chain preferably has no functional group having anion-exchange ability. The electrolyte membrane of the present disclosure can reliably maintain the function as a separation membrane even when decomposition reaction by a peroxide occurs.

Electrolyte membrane, method for producing the same, and membrane-electrode assembly for fuel cells that includes electrolyte membrane

Provided is an ionomer resin including a copolymer containing the following first structural unit.  Lto Lare each independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkanol group having 1 to 4 carbon atoms, or a specific functional group including an anion-exchange group, and an example of the functional group is &#x2014;Z-M-Z(R)(R)(R). Rto Rare directly bonded to Zand are each independently an alkyl group having 1 to 8 carbon atoms or an alkanol group having 1 to 8 carbon atoms. Mis a linear hydrocarbon chain having 3 to 8 carbon atoms, Zis a nitrogen atom or a phosphorus atom, and Zis a nitrogen atom bonded to one hydrogen atom, an oxygen atom, or a sulfur atom. Lis a hydrogen atom, a methyl group, or an ethyl group.

Ionomer resin, and ionomer solution, multilayer body, member, electrochemical element, and electrochemical device that include the same

Provided is a resin including a copolymer having a first structural unit and/or second structural unit and a structural unit having a polar group.  R, R, R, and Rare each independently a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, Rand Rare each independently a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, Ais a saturated carbon chain having 3 to 7 carbon atoms or a structure resulting from substitution of a heteroatom for a part of the carbon atoms of the saturated carbon chain, m and n are each independently 0 or 1, and Xand Xare each independently a halide ion, a hydroxide ion, or an anion of an organic or inorganic acid.

Resin having anion-exchange group, and resin-containing liquid, multilayer body, member, electrochemical element, and electrochemical device that include the same

The membrane electrode assembly (MEA) of the present invention is a fuel cell MEA including an anion exchange membrane and a catalyst layer disposed on the surface of the membrane. In the MEA, the anion exchange membrane is an anion-conducting polymer electrolyte membrane in which a graft chain having anion conducting ability is graft-polymerized on a substrate formed of a skived film of ultra-high molecular weight polyolefin. This MEA has various superior properties for achieving an improvement in the power output of an anion exchange PEFC compared to conventional MEAs.

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Osaka, Japan

Koso Matsuda