申論題內容
1. Hydrogen’s potential as a fuel source has been touted for decades, but the technology has never gotten off the ground on a sizeable scale—and with good reason, according to sceptics. They argue that widespread adoption of green hydrogen technologies had faced serious obstacles, most notably that hydrogen fuels need renewable energy in order to be green. This will require a massive expansion of renewable generation to power the electrolysis plants that split water into hydrogen and oxygen. In contrast, at present the most common way to produce hydrogen remains natural gas reforming, which as its name suggests requires a fossil-fuel input in the form of natural gas, which is reacted with steam to produce hydrogen, carbon monoxide and carbon dioxide. Because CO2 is emitted in this traditional manufacture of hydrogen from methane, it’s not climate friendly; hydrogen produced this way is known as “grey hydrogen”. (英翻中)