Garcia-Navarro, J.; Isaacs, M.A.; Favaro, M.; Ren, D.; Ong, W.-J.; Gratzel, M.l; Jimenez-Calvo, P.: Updates on Hydrogen Value Chain: A Strategic Roadmap. Global Challenges early view (2024)
10.1002/gch2.202300073
Open Access Version (externer Anbieter)
Abstract:
A strategic roadmap for noncarbonized fuels is a global priority, and thereduction of carbon dioxide emissions is a key focus of the Paris Agreement tomitigate the effects of rising temperatures. In this context, hydrogen is apromising noncarbonized fuel, but the pace of its implementation will dependon the engineering advancements made at each step of its value chain. Toaccelerate its adoption, various applications of hydrogen across industries,transport, power, and building sectors have been identified, where it can beused as a feedstock, fuel, or energy carrier and storage. However, widespreadusage of hydrogen will depend on its political, industrial, and socialacceptance. It is essential to carefully assess the hydrogen value chain andcompare it with existing solar technologies. The major challenge towidespread adoption of hydrogen is its cost as outlined in the roadmap forhydrogen. It needs to be produced at the levelized cost of hydrogen of lessthan 2 kg−1to be competitive with the established process of steammethane reforming. Therefore, this review provides a comprehensive analysisof each step of the hydrogen value chain, outlining both the currentchallenges and recent advances.