Scientometric analysis of research trends on solid oxide electrolysis cells for green hydrogen and syngas production

Abstract

Solid oxide electrolysis cell (SOEC) is a promising water electrolysis technology that produces hydrogen or syngas through water electrolysis or water and carbon dioxide co-electrolysis. Green hydrogen or syngas can be produced by SOEC with renewable energy. Thus, SOEC has attracted continuous attention in recent years for the urgency of developing environmentally friendly energy sources and achieving carbon neutrality. Focusing on 1276 related articles retrieved from the Web of Science (WoS) database, the historical development of SOECs are depicted from 1983 to 2023 in this paper. The co-occurrence networks of the countries, source journals, and author keywords are generated. Moreover, three main clusters showing different content of the SOEC research are identified and analyzed. Furthermore, the scientometric analysis and the content of the high-cited articles of the research of different topics of SOECs: fuel electrode, air electrode, electrolyte, co-electrolysis, proton-conducting SOECs, and the modeling of SOECs are also presented. The results show that co-electrolysis and proton-conducting SOECs are two popular directions in the study of SOECs. This paper provides a straightforward reference for researchers interested in the field of SOEC research, helping them navigate the landscape of this area of study, locate potential partners, secure funding, discover influential scholars, identify leading countries, and access key research publications.

Key words： solid oxide electrolysis cell (SOEC); scientometric review; knowledge network; material development; H₂O–CO₂ co-electrolysis; modeling

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 52102226 and 11932005), the Department of Education of Guangdong Province, China (Grant Nos. 2021KCXTD006 and 2021KQNCX272), the Science, Technology and Innovation Commission of Shenzhen Municipality, China (Grant Nos. GJHZ20220913143009017, JCYJ20210324120404013, and GXWD20220811165757005), and the Development and Reform Commission of Shenzhen Municipality, China (Grant No. XMHT20220103004).

Electronic Supplementary Material

Supplementary material is available in the online version of this article at https://doi.org/10.1007/s11708-024-0945-5 and is accessible for authorized users.

Competing Interests

The authors declare that they have no competing interests.

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