Fuel Cell Trucks And Buses Are Still Coming, And They Still Need More Green Hydrogen
cleantechnica.com Aug 3, 2026

Fuel Cell Trucks And Buses Are Still Coming, And They Still Need More Green Hydrogen

AI-summarised brief · reviewed before publication

Despite advancements in electric vehicle batteries, hydrogen fuel cells remain relevant for heavy-duty transport, driving demand for green hydrogen. While electrolysis dominates funding, researchers are exploring alternative production methods to address freshwater scarcity and cost barriers. A multinational team from Columbia University and Ewha Womans University published a study in Nature detailing an alkaline thermal treatment process for brown seaweed. This method offers a carbon-neutral pathway to green hydrogen, leveraging seaweed’s superior carbon sequestration rate and rapid growth without fertilizer. The process yields more hydrogen than traditional gasification methods. Simultaneously, a Korean-led team published findings in PNAS regarding plastic waste-to-hydrogen conversion. Their research highlights alkaline thermal treatment as an efficient recycling alternative, addressing the fact that only 9% of plastic waste is currently recycled. These innovations complement existing electrolysis efforts, targeting niche applications where fuel availability outweighs price sensitivity. The studies suggest that biomass and plastic waste can significantly contribute to the green hydrogen supply chain, offering scalable solutions for industrial decarbonization beyond passenger vehicles and home heating systems.

💡 Why It Matters

  • · Seaweed and plastic waste offer untapped, land-free resources for hydrogen production, bypassing freshwater constraints that limit electrolysis scalability.
  • · These methods simultaneously address critical waste management crises while supplying fuel for heavy transport sectors where batteries fall short.