Lithium-air batteries hold the promise of storing electricity at up to five times the energy density of today's familiar lithium-ion batteries, but they have inherent shortcomings. Researchers have proved that a new prototype is powered by a surprising chemical reaction that may solve the new battery's biggest drawback.
Europe wants to reduce its needs for raw materials and raise the level of recycling of resources in the solar power industry. If this project is successful, greenhouse gas emissions from solar panel manufacture will fall by 25 to 30 per cent.
Governments should not be abandoning carbon capture and storage, argues a researcher, as it is the only realistic way of dramatically reducing carbon emissions. Instead, they should be investing in global approaches to learn what works - and what doesn't.
Second-generation biofuel crops like the perennial grasses Miscanthus and switchgrass can efficiently meet emission reduction goals without significantly displacing cropland used for food production, according to a new study.
Pyrolysis bio-oil is produced by rapidly heating the forest residues in an oxygen-free environment and then rapidly cooling the products formed. By co-gasification with black liquor, a renewable fuel is produced.
Researchers are proposing a new 'hydricity' concept aimed at creating a sustainable economy by not only generating electricity with solar energy but also producing and storing hydrogen from superheated water for round-the-clock power production.
Metal powders, produced using clean primary energy sources, could provide a more viable long-term replacement for fossil fuels than other widely discussed alternatives, such as hydrogen, biofuels or batteries, according to a new study.
Energy researchers have put into service an innovative thermal storage system that uses lime as the storage medium. The lime storage system is a further development of an initial prototype and can store energy more economically and efficiently. Thermochemical storage systems have the potential to save a considerable amount of energy, especially in industrial processes and households.