Fuelling the future: An in-depth review of recent trends, challenges and opportunities of hydrogen fuel cell for a sustainable hydrogen economy

Hydrogen has gained tremendous momentum worldwide as an energy carrier to transit to a net zero-emission energy sector. It has been widely adopted as a promising large-scale renewable energy (RE) storage solution to overcome RE resources’ variability and intermittency nature. The fuel cell (FC) technology became in focus within the hydrogen energy landscape as a cost-effective pathway to utilize hydrogen for power generation. Therefore, FC technologies’ research and development (R&D) expanded into many pathways such as cost reduction, efficiency improvement, fixed and mobile applications, lifetime, safety and regulations, etc. Many publications and industrial reports about FC technologies and applications are available. This raised the necessity for a holistic review study to summarize the state-of-the-art range of FC stacks, such as…