[Purpose/Significance]Amid the global energy transition and climate change mitigation efforts,hydrogen has emerged as a strategic choice for many countries to achieve sustainable development goals.By an-alyzing the distribution and evolution of technical topics in hydrogen projects,which serve as direct carriers of policy implementation,we can gain insights into government funding priorities,grasp technological trends,and optimize resource allocation,thereby facilitating the development of the hydrogen industry.[Method/Process]Based on the policy informatics perspective,this study analyzes the EU's hydrogen energy project data from the Research and Innovation Framework Programmes between 2000 and 2023.Utilizing high-frequency word co-oc-currence analysis and topic clustering,the study identifies the technological topics highly focused on in the EU's hydrogen energy policy.Through the construction of frontier topic measurement indicators and strategic coordi-nate analysis,the study reveals the frontier distribution of EU hydrogen energy technology topics.By calculating the cosine similarity between topics using dot product,the study analyzes the evolution trends of technological topics and identifies the main paths of evolution.[Result/Conclusion]The research finds that electrolytic hy-drogen production,hydrogen storage and transportation,Power-to-X,wind and solar hydrogen production,and electricity-hydrogen coupling are the most focused emerging frontier technological topics in the EU's hydrogen energy policy.The topic evolution presents overall characteristics of shifting from hydrogen production technolo-gies to Power-to-X system integration,constructing a pan-European supply system centered on hydrogen storage and transportation,and developing fuel cell technology towards electricity-hydrogen coupling.This is mainly at-tributed to the EU's development of a green hydrogen industry and Power-to-X based on its North Sea wind power advantages,as well as reducing hydrogen storage and transportation costs by leveraging existing natural gas infra-structure.This study provides three insights for the development of China's hydrogen energy industry:continuous-ly promoting a hydrogen energy supply system with renewable energy complementarity;strengthening research on key technologies for hydrogen production and promoting diverse hydrogen applications and electricity-hydrogen coupling;and developing the hydrogen energy industry based on local conditions to promote coordinated regional development.
关键词
氢能/项目数据/主题演化/欧盟
Key words
hydrogen energy/project data/thematic evolution/European Union
维普
万方数据