Energy

In summer months sunlight comes with an unwanted side order of heat. Now, researchers have developed windows that can change color automatically when heated by sunlight, to keep buildings cool – and to top it off, they’re solar panels as well.

Our story on NDB's self-charging nuclear diamond batteries generated a lot of heated discussion, so we reached out to the University of Bristol, where the technology was invented, to discover exactly what these diamond betabatteries can and can't do.

Researchers from the Chinese Academy of Sciences have developed a new type of wearable electric generator, which harvests energy from the wind as you walk. The team says it’s low cost and efficient enough to power small sensors and LEDs.

Texas A&M University researchers have developed a plant-based supercapacitor with excellent electrochemical performance, demonstrating how sustainable materials can be used to develop more eco-friendly energy storage solutions.

A surprisingly simple new energy storage system is built on blocks that store thermal energy like melted chocolate chips in a muffin. The team says they’re efficient, scalable, safe, inexpensive, and can be used in existing coal-fired power plants.

A Scottish company called Gravitricity has now broken ground on a demonstrator facility for a creative new system that stores energy in the form of “gravity” by lifting and dropping huge weights.

New ultrathin solar cells boast a few advantages over others of their type. They're more efficient, made using more common elements, and can be inkjet-printed onto surfaces, making them light and flexible enough to power wearable electronics.

Researchers have developed a photovoltaic device that has an external quantum efficiency of 132 percent. This impossible-sounding feat was achieved using nanostructured black silicon, and could represent a major breakthrough for solar cells.

In a first, perovskite and organic solar cells have been tested in space. Not only did they perform well, but they’re much thinner and lighter than the silicon cells currently used and were even able to absorb diffuse light reflected back from Earth.

Boring old bricks might not seem like something that can really be made high-tech, but researchers keep proving us wrong. Now, a team has found a way to turn bricks into energy storage devices, using them to power a green LED in a proof of concept study.

Starting with adhesive tape and incorporating some advanced laser techniques, scientists at Rice University have developed a promising new electrode material for a battery architecture with massive potential.

A new type of hybrid solar energy converter can use energy from the Sun to create both electricity and steam. The device reportedly has high efficiency and runs at low cost, allowing industry to make use of a wider spectrum of solar energy.