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Title:
EFFICIENT AND STABLE STAINLESS STEEL-BASED ELECTROLYTIC WATER CATALYTIC ELECTRODE AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/107952
Kind Code:
A1
Abstract:
An efficient and stable stainless steel-based electrolytic water catalytic electrode and a preparation method therefor, which relate to the technical field of preparation of electrocatalytic materials. The electrode has a three-dimensional micro concave-convex array structure distributed on a stainless steel substrate. Micro-spheres of different sizes are randomly distributed on a concave-convex array surface, and the surfaces of the micro-spheres are covered with fluffy nano-fleece structures formed by irregular stacking of extremely small nanoparticles. In the present method, first a high-power pulse laser is used to pattern and ablate the surface of a stainless steel substrate to form a micro concave-convex array structure, and then a nanosecond pulse laser is used to ablate the surface of the concave-convex array to form a nano-fleece structure, thereby obtaining a self-supporting catalyst electrode which does not require an adhesive. The present electrode exhibits excellent electrocatalytic hydrogen evolution, oxygen evolution and full dehydration performance. The preparation method therefor is simple and controllable, the electrode may be prepared in a large area, and raw materials thereof are cheap and readily available. The electrode may be applied to a wide range of application fields, such as hydrogen for fuel battery vehicles, production of oxygen for underwater equipment, production of hydrogen and oxygen for medical treatment, hydrogen water cups, production of oxygen for plateaus, and portable hydrogen and oxygen production equipment.

Inventors:
ZHONG MINLIN (CN)
ZHANG HONGJUN (CN)
CAI MINGYONG (CN)
Application Number:
PCT/CN2019/101359
Publication Date:
June 04, 2020
Filing Date:
August 19, 2019
Export Citation:
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Assignee:
UNIV TSINGHUA (CN)
International Classes:
C25B1/04; C25B11/06
Foreign References:
CN109440125A2019-03-08
CN106486680A2017-03-08
CN106268876A2017-01-04
US20110147205A12011-06-23
Attorney, Agent or Firm:
ACIP LAW OFFICES (CN)
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