De Nora Permelec Ltd

Yokohama National University

Kawasaki Jukogyo Kabushiki Kaisha

Kyoto University

National University Corporation Yokohama National University

Awaludin Zaenal

Shigenori Mitsushima

Yoshinori Nishiki

Akihiro Kato

Yoshiyuki Kuroda

Takaaki Nakai

Kensaku Nagasawa

Ikuo Nagashima

Tatsuya Taniguchi

Yasushi Sato

Akiyoshi Manabe

Setsuro Ogata

Koji Matsuoka

Akihiko Inomata

Yasutomo Takakuwa

Akihiro Madono

Yoshiharu Uchimoto

Fumiya Tsujii

Osamu Arimoto

Ashraf Abdelhaleem

Sayaka Fukuda

Yun Bao

Tomoki Uchiyama

Ayaka Nagai

Shohei Takatsu

The present invention provides an accelerated evaluation method for an anode, the method imitating electric power having a large output fluctuation, such as renewable energy, and enabling an accurate evaluation, in a shorter time, of durability of an anode using such electric power having a large output fluctuation as a power source. The method is an accelerated evaluation method for an anode, the method performing evaluation of the durability of the anode in an accelerated manner by electrochemical operation in an aqueous electrolyte. The method includes a Jstep of loading an oxidation current of 0.1 A/cmor more to the anode for a duration of Tand an Estep of holding the anode at a constant potential lower than an open circuit potential for a duration of T, wherein each of the Jstep and the Estep is repeated 100 times or more.

Accelerated evaluation method for anode

The present invention provides a simple method for producing an electrode having improved oxygen evolution reaction (OER) activity without a need for catalyst coating and an electrode produced by this production method. The method is a method for producing an electrode including a step of subjecting an electrically conductive substrate comprising a nickel alloy comprising 30 to 70% by mass of Ni and 30 to 70% by mass of Fe, provided that Ni+Fi=100% by mass, to a thermal treatment, and a step of etching the thermally treated electrically conductive substrate with an etchant comprising at least any acid of an organic acid and a weak inorganic acid. The electrode is an electrode that is produced by this production method and that is useful as an oxygen evolution anode or the like.

Method for manufacturing electrode, and electrode

The present invention provides an alkaline water electrolysis anode such that even when electric power having a large output fluctuation, such as renewable energy, is used as a power source, the electrolysis performance is unlikely to be deteriorated and excellent catalytic activity is retained stably over a long period of time. The alkaline water electrolysis anode is an alkaline water electrolysis anodeprovided with an electrically conductive substrateat least a surface of which contains nickel or a nickel base alloy and a catalyst layerdisposed on the surface of the electrically conductive substrate, the catalyst layercontaining a nickel-containing metal oxide having a spinel structure, wherein the nickel-containing metal oxide contains nickel (Ni) and manganese (Mn), and has an atom ratio of Li/Ni/Mn/O of (0.0 to 0.8)/(0.4 to 0.6)/(1.0 to 1.8)/4.0.

Anode for alkaline water electrolysis and method for producing same

The present invention provides an electrode for electrolysis in which electrolysis performance is hard to deteriorate and excellent catalytic activity is kept stable over a long period of time even when electric power in which there is a large fluctuation in output, such as renewable energy, is used as a power source. The electrode for electrolysis is an electrodefor electrolysis provided with an electrically conductive substrateat least the surface of which contains nickel or a nickel-based alloy, an intermediate layerformed on the surface of the electrically conductive substrateand containing a lithium-containing nickel oxide represented by composition formula LiNiO(0.02≤x≤0.5), and a catalyst layerof a nickel cobalt spinel oxide, an iridium oxide, or the like, the catalyst layerformed on the surface of the intermediate layer

Electrolysis electrode and method for manufacturing same

The present invention realizes industrially excellent effects such that when electric power having a large output fluctuation, such as renewable energy, is used as a power source, electrolysis performance is unlikely to be deteriorated and excellent catalytic activity is retained stably over a longer period of time, and in addition, the present invention provides a technique that enables forming a catalyst layer of an oxygen generation anode, which gives such excellent effects, with a more versatile materials and by a simple electrolysis method. Provided are an alkaline water electrolysis method including supplying an electrolyte obtained by dispersing a catalyst containing a hybrid nickel-iron hydroxide nanosheet (NiFe-ns) being a composite of a metal hydroxide and an organic substance to an anode chamber and a cathode chamber, and using the electrolyte for electrolysis in each chamber in common, an alkaline water electrolysis method including supplying an electrolyte obtained by dispersing a catalyst containing the NiFe-ns to an anode chamber and a cathode chamber, and performing electrolytic deposition of the NiFe-ns in the electrolytic cell during operation to electrolytically deposit the NiFe-ns on a surface of an electrically conductive substrate having a catalyst layer formed on a surface of an oxygen generation anode, thereby recovering and improving electrolysis performance, and an alkaline water electrolysis anode.

Alkaline water electrolysis method, and anode for alkaline water electrolysis

An organic hydride production apparatus includes: an electrolyte membrane having proton conductivity; a cathode that includes a cathode catalyst layer used to hydrogenate a hydrogenation target substance using protons to produce an organic hydride and also includes a cathode chamber; an anode that includes an anode catalyst layer used to oxidize water to produce protons and also includes an anode chamber; and a gas introduction unit that introduces, into the anolyte at a certain position, a certain gas used to remove at least one of the hydrogenation target substance and the organic hydride that have passed through the electrolyte membrane and been mixed into the anolyte.

Organic hydride production apparatus and method for producing organic hydride

An anode for oxygen evolution that operates at a small overpotential and in a stable manner, and can be used favorably in an organic chemical hydride electrolytic synthesis apparatus. An anodefor oxygen evolution that evolves oxygen in a sulfuric acid aqueous solution containing a substance to be hydrogenated dissolved at a concentration higher than 1 mg/L, wherein an anode substrateis composed of a valve metal, and an anode catalyst layercontaining at least one oxide, nitride or carbide of iridium, and at least one oxide, nitride or carbide of at least one metal selected from the group consisting of elements belonging to groups 4, 5 and 13 of the periodic table is formed on the surface of the anode substrate

Oxygen-generating anode

Growing community of inventors

Fujisawa, Japan

Awaludin Zaenal