公开(公告)号：US20220282386A1

公开(公告)日：2022-09-08

申请号：US17637607

申请日：2019-10-16

Applicant: KOREA INSTITUTE OF MATERIALS SCIENCE

Inventor： Sung Mook CHOI ,  Yoo Sei PARK ,  Myeong Je JANG ,  Ju Chan YANG ,  Kyu Hwan LEE ,  Jeong Hun LEE ,  Sung Min PARK ,  Jae Hoon JEONG

IPC: C25B11/077 ,  C25B11/031 ,  C25B1/04

Abstract: The present invention provides a water electrolysis electrode including a catalyst having a three-dimensional nanosheet structure with a low overvoltage and excellent catalytic activity, a method for producing the same, and a water electrolysis device including the same. The water electrolysis electrode according to the present invention includes a catalyst layer, which includes a composite metal oxide and has a three-dimensional nanosheet structure, and an electrode substrate. The method for producing a water electrolysis electrode according to the present invention comprises steps of: immersing an electrode substrate in an electrolyte solution containing metal oxide precursors; electrodepositing composite metal hydroxides by applying a voltage to the electrode substrate; and forming a composite metal oxide by annealing the electrode substrate. The water electrolysis device according to the present invention includes the water electrolysis electrode according to the present invention as an anode.