公开(公告)号：EP3998472A1

公开(公告)日：2022-05-18

申请号：EP20837850.5

申请日：2020-07-10

申请人： Daehyunst Co., Ltd

发明人： SEO, Hyung Tak ,  HAN, Seung Ik ,  LEE, Yeong An

IPC分类号： G01N21/78 ,  G01N33/00 ,  B01J23/42 ,  B01J23/44 ,  G01N31/10

摘要： Disclosed is a hydrogen sensor. The hydrogen sensor includes a substrate; a color changeable layer disposed on the substrate and made of an oxide semiconductor material, wherein when the oxide semiconductor material reacts with hydrogen ions or hydrogen atoms, a color thereof changes; a catalyst layer disposed on a surface of the color changeable layer and made of a catalyst material, wherein the catalyst material dissociates hydrogen molecules (H2) into hydrogen atoms (H) or hydrogen ions (H + ); and a protective layer disposed to cover a surface of the catalyst layer and an exposed surface of the color changeable layer, and made of a polymer material, wherein the polymer material allows hydrogen molecules to pass therethrough but blocks water molecules.