公开(公告)号：US20180245224A1

公开(公告)日：2018-08-30

申请号：US15753631

申请日：2017-04-27

Applicant: DE NORA PERMELEC LTD

Inventor： Suguru TAKAHASHI ,  Akihiro MADONO ,  Takamichi KISHI ,  Osamu ARIMOTO

IPC: C25B11/03 ,  C25B11/04 ,  C25B9/08 ,  C25B15/00

Abstract: Provided are an electrolyzer having excellent durability against reverse current. The electrolyzer 300 includes an anode 314, an anode chamber 310 housing the anode 314, a cathode 330, a cathode chamber 320 housing the cathode 330, and a diaphragm that separates the anode chamber 310 and the cathode chamber 320, wherein a reverse current absorption body 334 formed of a sintered compact containing nickel is disposed in at least one of an inside of the cathode chamber 320 and an inside of the anode chamber 310, and the reverse current absorption body 334 is not directly coupled to the cathode 330 and the anode 314 but is electrically connected to at least one of the cathode 330 and the anode 314.

公开(公告)号：US20240263327A1

公开(公告)日：2024-08-08

申请号：US18569324

申请日：2022-07-01

Applicant: DE NORA PERMELEC LTD

Inventor： Awaludin ZAENAL ,  Akihiro KATO ,  Takaaki NAKAI ,  Osamu ARIMOTO ,  Akihiro MADONO ,  Sayaka FUKUDA

IPC: C25B11/061 ,  C25B1/04

CPC classification number: C25B11/061 ,  C25B1/04

Abstract: 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.

公开(公告)号：US20180282884A1

公开(公告)日：2018-10-04

申请号：US15753646

申请日：2017-04-27

Applicant: DE NORA PERMELEC LTD

Inventor： Suguru TAKAHASHI ,  Akihiro MADONO ,  Takamichi KISHI ,  Osamu ARIMOTO

IPC: C25B11/04 ,  C25B9/08

Abstract: 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 electrolysis 130 includes a conductive substrate 132 on which a catalyst layer is formed, and a reverse current absorption body 134 that is coupled to the conductive substrate 132 in a detachable manner, wherein the reverse current absorption body 134 is formed from a sintered compact containing nickel. The method for producing the electrode for electrolysis 130 includes 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 132.