Preparation of Graphene and Nano-Nickel Oxide Composite Electrode and Its Application in Photoelectrically Coupled Water Hydrogen Production

In today's world, fossil fuels are facing energy shortages and environmental pollution, so the focus is on green and clean energy sources such as hydrogen, and electrolysis of water to produce hydrogen has become a highly anticipated method of hydrogen production. This paper mainly focuses on the development process of graphene composites in water hydrogen production technology, reviews the research results of electrolytic water hydrogen production technology and photoelectric coupling hydrogen production technology at home and abroad, critically evaluates the strengths and weaknesses of existing research, points out the limitations and research gaps of materials, and analyzes the research progress of graphene-nickel oxide composite electrodes in photocatalysis and electro catalysis performance. This paper elaborates on the hydrogen production principles, technical difficulties and improvement directions of its application in photo coupled water hydrogen production, and further analyzes its potential and feasibility as a bifunctional catalyst, providing new development ideas and methods for future green hydrogen production technology.