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1.发明公开
公开(公告)号：EP3872234A1
公开(公告)日：2021-09-01
申请号：EP20198733.6
申请日：2020-09-28
IPC分类号： C25B1/04 , C25B1/46 , C25B11/052 , C25B11/061 , C25B11/089
摘要： The present disclosure relates to an electrode (hydrogen-generating electrode) that generates hydrogen upon electrolysis of water or chlorine-alkali. According to the present disclosure, hydrogen generation efficiency comparable to that of a precious metal (or noble metal) may be secured using a transition metal and a non-precious metal.
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2.发明公开
公开(公告)号：EP3825443A1
公开(公告)日：2021-05-26
申请号：EP20208407.5
申请日：2020-11-18
发明人： KIM, Sang Kyung , ISLAM, Jahowa , KIM, Chang Hee , CHO, Won Chul , CHO, Hyun Seok , KIM, Min Joong
IPC分类号： C25B1/04 , C25B11/054 , C25B11/067 , C25B11/081 , B01J23/46 , B01J37/03
摘要： The present invention provides a method of preparing a catalyst for PEM water electrolysis, which includes dispersing boron carbide (B 4 C) in water to prepare an aqueous boron carbide solution; adding an iridium (Ir) precursor to the aqueous boron carbide solution to prepare a mixed solution; adjusting acidity of the mixed solution to be in a basic region; and adding a reducing agent to the mixed solution and stirring the mixture to form Ir/B 4 C composite nanoparticles. The catalyst for PEM water electrolysis prepared by the method has high durability and a large specific surface area.
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3.发明公开
公开(公告)号：EP3647466A1
公开(公告)日：2020-05-06
申请号：EP19206229.7
申请日：2019-10-30
发明人： CHO, Hyun Seok , GO, Kang Seok , KIM, Chang Hee , LEE, Do Yeon , PARK, Joung Ho , KIM, Sang Kyung , CHO, Won Chul , SEO, Myung Won
摘要： The invention provides an alkaline electrolysis cell and a method for manufacturing the alkaline electrolysis cell. The alkaline electrolysis cell may include: a reduction electrode and an oxidation electrode that are disposed separately from each other; electrolyte formed between the reduction electrode and the oxidation electrode; an ion exchanging porous membrane that is positioned in the electrolyte; and a gas-barrier layer that is formed at least one of a place on a surface of the reduction electrode and a place in the ion exchanging porous membrane. The gas-barrier layer causes hydrogen gas generated at the reduction electrode to be oxidized so as to prevent penetration of the hydrogen gas from the reduction electrode to the oxidation electrode. According to the invention, penetration of hydrogen gas is prevented such that a unit component is prevented from being degraded, and it is possible to improve durability and efficiency of the electrolysis cell.
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