Abstract:
Hydrogen energy, as a carrier of clean energy, which will play an important role in addressing climate change, has attracted wide attention in recent years. However, due to the long industry chain and technology diversification of hydrogen energy, there are potential risks of redundant constructions and disorderly planning behind “the trend of hydrogen energy”, which is unfavorable for the high-quality and sustainable development of hydrogen energy industry. In this paper, technological and economic features of various technologies in hydrogen production, hydrogen storage and transportation and hydrogen utilization were presented, and the advantages and disadvantages of different technologies were compared, providing a reference for the selection of hydrogen energy technologies. The development progress of hydrogen production, hydrogen storage and transportation and hydrogen fuel cell technologies in all countries, China and the United States was compared to provide reference for industry development via bibliometric method, and the schedules of when hydrogen energy technologies will become competitive in different fields were analyzed. The result shows that hydrogen production from fossil fuels would be the main hydrogen source in a short to medium term. Literature research on hydrogen production would get into the saturation period after 2030. At that time, hydrogen production from renewable energy is expected to compete economically with hydrogen production from fossil fuels. Hydrogen storage and transportation methods are diversified, so an appropriate hydrogen transportation mode should be determined by transportation distance and hydrogen volume. As for scientific research, it is necessary to make breakthroughs in the field of hydrogen liquefaction, solid hydrogen carrier and liquid organic hydrogen carrier, and relevant literature research would enter the saturation period at around 2027. Hydrogen has application prospect and emission reduction potential in industry, transportation, and electric heating supply, but its permeability depends on its technology costs and competitiveness with other low-carbon technologies. At last, based on the current and future development trend of hydrogen energy technologies in China, some policy proposals were put forward to promote the well-balanced and high-quality development of hydrogen energy industry in China.