Review of the current status of the hydrogen economy

Abstract

The envisioned hydrogen-powered future is gradually taking shape in our time. In many countries around the world, active efforts to decarbonize energy systems have turned hydrogen into the centerpiece of grand master plans for clean and sustainable replacement to fossil fuels. This chapter tackles the current status of hydrogen economy, which provides a scientific, social, and economic perspective of hydrogen economy and its realization in our modern time. It elaborates the importance of research findings on the different aspects—hydrogen production, storage, delivery, and fuel cell—relevant to the realization of a hydrogen economy. It also illustrates the impact of the results of scientific investigations in attaining innovative hydrogen technologies. Lastly, it discusses the current technologies for hydrogen in the context of their implementation following the hydrogen roadmaps of different countries around the world.