A STATISTICAL ANALYSIS OF SCIENTIFIC RESEARCH AND THE ENERGY PROJECTION OF GREEN HYDROGEN AT A GLOBAL LEVEL IN THE LAST FIVE YEARS

Abstract

Seeking energy sources with low volume of carbon emissions has boosted the energy market and global scientific research. From this point, the objective of this study is to verify with the help of a bibliometric analysis the progress of research on energy renewal based on the production of green hydrogen, the installed capacity, the academic institutions that are at the forefront of this movement, authors and journals that have emphasized the subject. The methodology used was based on bibliometric research elaborated with the support of the bibliometrix data package through the RStudio software, carried out in the Scopus and Web of Science databases. Search expressions ("green hydrogen") and ("low carbon emission") or "decarbonization" or "greenhouse gases", were used in order to reach the widest possible range of action, these expressions were initially filtered based on the time period between 2019-2024, followed by the filter of review articles, conference papers, open access, written in English. A total of 913 studies were surveyed, with 8 duplicate articles, and in the end, 885 unique articles remained that fit the theme, the search expressions, and the filters placed. Initially, there was an annual search growth of 128%, where the biggest subjects searched were the production of hydrogen, fossil fuels, low carbon, electrolysis, hydrogen storage, green hydrogen.