公开(公告)号：US20200377973A1

公开(公告)日：2020-12-03

申请号：US16970992

申请日：2018-12-06

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY

发明人： Kazuki OKUNO ,  Takahiro HIGASHINO ,  Hiromasa TAWARAYAMA ,  Masatoshi MAJIMA ,  Haruki MASUMURA ,  Yoshiyuki KURODA ,  Shigenori MITSUSHIMA

IPC分类号： C22C1/08 ,  C22C19/03 ,  C22C18/00

摘要： A metal porous body having a three-dimensional network structure, includes: a framework forming the three-dimensional network structure; and a coating layer having fine pores and coating the framework, the three-dimensional network structure including a rib and a node connecting a plurality of ribs, the framework including an alkali-resistant first metal, the fine pores having an average fine pore diameter of 10 nm or more and 1 μm or less, the coating layer including an alkali-resistant second metal and optionally including an alkali-soluble metal, the alkali-soluble metal being contained at a proportion of 0% by mass or more and 30% by mass or less with reference to a total mass of the framework and the coating layer.

公开(公告)号：US20220136115A1

公开(公告)日：2022-05-05

申请号：US17433474

申请日：2020-03-11

申请人： DE NORA PERMELEC LTD ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY

发明人： Shigenori MITSUSHIMA ,  Yoshiyuki KURODA ,  Takeshi NISHIMOTO

IPC分类号： C25B1/04 ,  C25B11/091 ,  C25B11/061 ,  C25B15/08 ,  C25B15/029

摘要： An object of the present invention is to provide an electrolysis technique such that the electrolysis performance is unlikely to be deteriorated, and excellent catalytic activity is retained stably over a long period of time even when electric power having a large output fluctuation, such as renewable energy, is used a power source, and this object is realized by an alkaline water electrolysis method, in which an electrolytic solution obtained by dispersing a catalyst containing a hybrid cobalt hydroxide nanosheet (Co-NS) being a composite of a metal hydroxide and an organic substance is supplied to an anode chamber and a cathode chamber that form an electrolytic cell, and the electrolytic solution is used for electrolysis in each chamber in common, and an alkaline water electrolysis anode.

公开(公告)号：US20230332309A1

公开(公告)日：2023-10-19

申请号：US18248840

申请日：2021-10-14

申请人： KYOTO UNIVERSITY ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY ,  DE NORA PERMELEC LTD

发明人： Yoshiharu UCHIMOTO ,  Tomoki UCHIYAMA ,  Shigenori MITSUSHIMA ,  Yoshiyuki KURODA ,  Kensaku NAGASAWA ,  Yoshinori NISHIKI

IPC分类号： C25B11/077 ,  C25B11/061 ,  B01J23/889 ,  B01J37/14 ,  C25B1/04

CPC分类号： C25B11/0773 ,  C25B11/061 ,  B01J23/889 ,  B01J37/14 ,  C25B1/04

摘要： 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 anode 10 provided with an electrically conductive substrate 2 at least a surface of which contains nickel or a nickel base alloy and a catalyst layer 6 disposed on the surface of the electrically conductive substrate 2, the catalyst layer 6 containing a metal composite oxide having a quadruple perovskite oxide structure, wherein the metal composite oxide contains calcium (Ca), manganese (Mn), and nickel (Ni), and has an atom ratio of Ca/Mn/Ni/O of (1.0)/(6.6 to 7.0)/(0.1 to 0.4)/12.0.

公开(公告)号：US20230109702A1

公开(公告)日：2023-04-13

申请号：US17905232

申请日：2021-03-08

申请人： DE NORA PERMELEC LTD ,  KAWASAKI JUKOGYO KABUSHIKI KAISHA ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY

发明人： Shigenori MITSUSHIMA ,  Yoshiyuki KURODA ,  Shohei TAKATSU ,  Ikuo NAGASHIMA ,  Tatsuya TANIGUCHI ,  Akihiko INOMATA ,  Ayaka NAGAI ,  Yoshinori NISHIKI ,  Akihiro KATO ,  Awaludin ZAENAL ,  Takaaki NAKAI

IPC分类号： C25B11/052 ,  C25B1/04 ,  C25B11/061 ,  C25B11/077 ,  C25B15/08 ,  C25B15/029

摘要： 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.

公开(公告)号：US20230408444A1

公开(公告)日：2023-12-21

申请号：US18253458

申请日：2021-11-17

申请人： DE NORA PERMELEC LTD ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY

发明人： Shigenori MITSUSHIMA ,  Yoshiyuki KURODA ,  Kensaku NAGASAWA ,  Ashraf ABDELHALEEM ,  Awaludin ZAENAL ,  Yoshinori NISHIKI

IPC分类号： G01N27/48

CPC分类号： G01N27/48 ,  C25B1/04

摘要： 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 Je step of loading an oxidation current of 0.1 A/cm2 or more to the anode for a duration of Te and an Emin step of holding the anode at a constant potential lower than an open circuit potential for a duration of Train, wherein each of the Je step and the Emin step is repeated 100 times or more.

公开(公告)号：US20230323547A1

公开(公告)日：2023-10-12

申请号：US18248848

申请日：2021-10-14

申请人： KYOTO UNIVERSITY ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY ,  DE NORA PERMELEC LTD

发明人： Yoshiharu UCHIMOTO ,  Tomoki UCHIYAMA ,  Shigenori MITSUSHIMA ,  Yoshiyuki KURODA ,  Kensaku NAGASAWA ,  Yoshinori NISHIKI ,  Awaludin ZAENAL ,  Yun BAO

IPC分类号： C25B11/052 ,  C25B11/061 ,  C25B11/077 ,  C25B1/04 ,  C25B15/021

CPC分类号： C25B11/052 ,  C25B11/061 ,  C25B11/0771 ,  C25B1/04 ,  C25B15/021

摘要： 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 anode 10 provided with an electrically conductive substrate 2 at least a surface of which contains nickel or a nickel base alloy and a catalyst layer 6 disposed on the surface of the electrically conductive substrate 2, the catalyst layer 6 containing 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.

公开(公告)号：US20230279566A1

公开(公告)日：2023-09-07

申请号：US18005796

申请日：2021-07-29

申请人： KYOTO UNIVERSITY ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY ,  DE NORA PERMELEC LTD

发明人： Yoshiharu UCHIMOTO ,  Tomoki UCHIYAMA ,  Shigenori MITSUSHIMA ,  Yoshiyuki KURODA ,  Kensaku NAGASAWA ,  Yoshinori NISHIKI

IPC分类号： C25B11/052 ,  C25B1/04 ,  C25B11/061 ,  C25B11/077

CPC分类号： C25B11/052 ,  C25B1/04 ,  C25B11/061 ,  C25B11/077

摘要： 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 anode 10 provided with an electrically conductive substrate 2 at least a surface of which contains nickel or a nickel base alloy and a catalyst layer 6 disposed on the surface of the electrically conductive substrate 2, the catalyst layer 6 containing a lithium composite oxide having a rock salt type structure, wherein the lithium composite oxide contains lithium (Li), nickel (Ni), iron (Fe), and aluminum (Al), and has an atom ratio of Li/Ni/Fe/Al/O of (0.4 to 1.1)/(0.4 to 0.8)/(0.05 to 0.2)/(0.05 to 0.2)/2.0.