Situation Analysis of Gravity Energy Storage Research Based on Literature Metrology

Gravity energy storage is a physical energy storage technology that is environmentally friendly and economically viable. It has gained significant attention in recent years. This study utilized the SCI-EXPANDED and CPCI-S databases to conduct a global search for research papers on gravity energy storage technology. Subsequently, the current development trend of this field was analyzed from the perspectives of annual output trend, discipline distribution, major output countries, and institutions. Quantitative statistics, cooperation analysis, and research topic cluster analysis were employed to perform bibliometric analysis and knowledge graph analysis, providing insight into this field. The results of the research indicate that gravity energy storage technology is still emerging, albeit with an increasingly interdisciplinary perspective and an expanding number of countries and institutions contributing. In recent years, it mainly focuses on the application of gravity energy storage technology to renewable energy generation systems, as well as the simulation modeling and algorithm research of composite energy storage technology combined with compressed air energy storage and other energy storage technologies.