Research progress and challenges of photovoltaic-driven electrolysis water splitting for hydrogen production
Photovoltaic driven hydrogen electrolysis,using photovoltaic power to produce hydrogen by electrolysis of water,is a promising green hydrogen production technology,and has significant advantages compared with other types of hydrogen production technology.This technology not only possesses notable advantages such as low energy consumption,pollution-free operation,and a simple structure,but it also converts unstable solar energy into stable hydrogen energy,offering reliable energy storage and peak-shaving capabilities for power systems.It is of great significance for establishing a sustainable energy system.In this paper,the research progress of photovoltaic driven water electrolysis technology is summarized,and optimization strategies for water electrolysis catalysts as well as the integration methods of photovoltaic-electrolysis systems are discussed.Firstly,given the background of energy crisis,the importance of photovoltaic driven hydrogen electrolysis in constructing the sustainable energy system is highlighted.Subsequently,the basic concepts of photovoltaic-electrolysis are introduced,by analyzing the principles and characteristics of different water electrolysis technologies,the key factors for enhancing electrolysis efficiency are revealed.Then,the design and optimization strategies of water electrolysis catalysts are explored,especially innovative approaches in electronic structure modulation,interface engineering,and surface engineering,and the existing strategies for improving the efficiency of hydrogen production by photovoltaic-electrolysis are summarized.Furthermore,the impact of coupling configurations on the efficiency of photovoltaic electrolysis systems is evaluated,and the technical difficulties associated with system integration and scaling-up are discussed.Finally,the challenges and future research directions of photovoltaic-electrolysis technology for hydrogen production are prospected.A detailed overview of the photovoltaic driven hydrogen electrolysis technology was provided,giving reference for the large-scale application and promotion of photovoltaic-electrolysis.
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