In comparison to batteries, what is one advantage of hydrogen-oxygen fuel cells for vehicles?

Hydrogen-oxygen fuel cells have the significant advantage of producing only water and heat as by-products during their operation. This characteristic makes them much cleaner and more environmentally friendly compared to traditional combustion engines and batteries, which may produce harmful emissions or toxic substances. The reaction in a hydrogen fuel cell involves hydrogen reacting with oxygen to generate electricity, with water being the main by-product. As concerns about air pollution and climate change grow, the clean output from hydrogen fuel cells positions them as a sustainable alternative for vehicles, contributing to lower environmental impact.

This aspect clearly distinguishes hydrogen-oxygen fuel cells from other energy sources and highlights their potential to reduce pollution. The option mentioning cost implies higher production expenses, which can be context-dependent. The statement about energy storage capacity is relevant, but fuel cells can provide energy on-demand rather than storing energy like batteries do. Lastly, suggesting more frequent recharges highlights limitations seen with batteries, which is not the case for hydrogen fuel cells that can be refueled much like gasoline vehicles, often with less downtime.