Hydrogen energy and fuel cells are emerging as pivotal solutions for achieving carbon-neutral industrial processes and sustainable transportation. Studies investigate green hydrogen production through electrolysis, advanced fuel cell materials, and hydrogen storage systems. This field also explores the role of hydrogen in heavy industries, power generation, and long-distance mobility. Research highlights include reducing production costs, improving conversion efficiency, and enhancing safety standards. The journal promotes innovations that accelerate the global hydrogen economy. Hydrogen technologies are expected to play a major role in deep decarbonization strategies worldwide.