This scientometric analysis enhances the understanding of chemical looping water splitting (CLWS) by focusing on scientometric insights. The study analyzes the trends and structures of research in CLWS from 2007 to 2024 using scientometric techniques such as co-authorship, co-word, co-citation, cluster analysis, and trend topics. Analyzing 78 studies from Scopus and WoS, the study reveals a significant increase in research output from an average of 1.6 articles per year (2007–2018) to about 8 articles per year from 2019 onward, peaking at 17 articles in 2023. The trend is expected to continue, with nine articles already published in 2024. Geographically, China leads in contributions with 44.9% of publications, followed by the USA (14.1%) and Korea (6.4%). Based on the current evolution of the field, key research themes identified nowadays include steam reforming, iron compounds, hydrogen production, and chemical stability, with the latter two being particularly notable as trending topics. The study also reveals a collaborative research environment with an average of 5.4 co-authors per document and 253 distinct authors. This study provides professionals and researchers with a comprehensive understanding of the current state and research trends in CLWS, promoting the development of more studies in the most promising topics. It also highlights the importance of fostering interdisciplinary collaborations and technological innovation to address both the technical and economic aspects of CLWS, which is essential for advancing clean hydrogen production. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.