A review on the research progress and application of compressed hydrogen in the marine hydrogen fuel cell power system

The urgency to mitigate greenhouse gas emissions from maritime vessels has intensified due to the increasingly stringent directives set forth by the International Maritime Organization (IMO). These directives specifically address energy efficiency enhancements and emissions reduction within the shipping industry. In this context, hydrogen is the much sought after fuel for all the global economies and its applications, for transportation and propulsion in particular, is crucial for cutting down carbon emissions. Nevertheless, the realization of hydrogen-powered vessels is confronted by substantial technical hurdles that necessitate thorough examination. This study undertakes a comprehensive analysis encompassing diverse facets, including distinct variations of hydrogen fuel cells, hydrogen internal combustion engines, safety protocols associated with energy storage, as well as the array of policies and commercialization endeavors undertaken globally for the advancement of hydrogen-propelled ships. By amalgamating insights from these multifaceted dimensions, this paper adeptly encapsulates the myriad challenges intrinsic to the evolution of hydrogen-fueled maritime vessels, while concurrently casting a forward-looking gaze on their prospective trajectory. We would like to submit the enclosed manuscript entitled “A review on the research progress and application of compressed hydrogen in the shipboard energy systems”，which we wish to be considered for publication in the Heliyon. No conflict of interest exits in the submission of this manuscript, and manuscript is approved by all authors for publication. I would like to declare on behalf of my co-authors that the work described was original research that has not been published previously, and not under consideration for publication elsewhere. All the authors listed have approved the manuscript. In this work, we have extensions based on previous work review (Highlights).•Hydrogen could help to decarbonize challenging to decarbonize sectors.•Detailed review on hydrogen energy ship is presented. The key features of each method are discussed in detail.•An analysis of operational challenges and recent advancements in shipboard hydrogen techniques is presented and suggestions for the development of hydrogen ships.•Existing research gap is analyzed.•The future perspectives in terms of technological, and economic aspects are discussed. I hope this paper is suitable for the Heliyon. We have no conflicts of interest to