De Nora Permelec Ltd

Osamu Arimoto

Akihiro Madono

Takamichi Kishi

Suguru Takahashi

Akihiro Kato

Awaludin Zaenal

Takaaki Nakai

Sayaka Fukuda

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

Provided are an electrolyzer having excellent durability against reverse current. The electrolyzerincludes an anode, an anode chamberhousing the anode, a cathode, a cathode chamberhousing the cathode, and a diaphragm that separates the anode chamberand the cathode chamber, wherein a reverse current absorption bodyformed of a sintered compact containing nickel is disposed in at least one of an inside of the cathode chamberand an inside of the anode chamber, and the reverse current absorption bodyis not directly coupled to the cathodeand the anodebut is electrically connected to at least one of the cathodeand the anode

Electrolyzer

Provided are an electrode for electrolysis having excellent durability against reverse current, and a method that enables production of the electrode for electrolysis at low cost. The electrode for electrolysisincludes a conductive substrateon which a catalyst layer is formed, and a reverse current absorption bodythat is coupled to the conductive substratein a detachable manner, wherein the reverse current absorption bodyis formed from a sintered compact containing nickel. The method for producing the electrode for electrolysisincludes a sintered compact formation step of obtaining the sintered compact by sintering a raw material powder composed of any one of Raney nickel alloy particles containing nickel and an alkali-soluble metal element, metallic nickel particles, and a mixture of Raney nickel alloy particles and metallic nickel particles, and a coupling step of coupling the sintered compact to the conductive substrate

Electrode for electrolysis, manufacturing method of electrode for electrolysis, and electrolyzer

Growing community of inventors

Fujisawa, Japan

Osamu Arimoto