Anyone who owns an electronic device knows that lithium-ion batteries could work better and last longer. Now, scientists examining battery materials on the nanoscale reveal how nickel forms a physical barrier that impedes that shuttling of lithium ions in the electrode, reducing how fast the materials charge and discharge. The research also suggest a way to improve the materials.
Perhaps inspired by Arizona's blazing summers, Arizona State University scientists have developed a new method that relies on heat to improve the yield and lower the costs of high-energy biofuels production, making renewable energy production more of an everyday reality.
An exciting advance in solar cell technology developed at the University of Kansas has produced the world's most efficient photovoltaic cells made from nanocarbons, materials that have the potential to drop the costs of PV technology in the future.
As data centers continue to come under scrutiny for the amount of energy they use, researchers at University of Toronto Scarborough have a suggestion: turn the air conditioning down. Their latest research suggests that turning up the temperature could save energy with little or no increased risk of equipment failure.
A Flinders University researchers has been developing a cheaper and faster way of making large-scale plastic solar cells using a lamination technique, paving the way for a lucrative new clean energy industry. The method is a promising alternative to the expensive fabrication techniques currently used in the renewable energy sector, and would make the commercialization of plastic solar cell technology more viable.
Magnetically imploded tubes called liners, intended to help produce controlled nuclear fusion at scientific "break-even" energies or better within the next few years, have functioned successfully in preliminary tests, according to a Sandia National Laboratories research paper accepted for publication by Physical Review Letters .
If increasing numbers of wind turbines and photovoltaic systems feed electrical energy into the energy grid, it becomes denser—and more distributed. Researchers in Germany, using model simulations, have discovered that consumers and decentralized generators can easily self-synchronize. Their results indicate that a failure of an individual supply line in the decentralized grid less likely implies an outage in the network as a whole. But care must be taken when adding new lines.
University of Texas at Austin physicists have been awarded a U.S. patent for an invention that could someday be used to turn nuclear waste into fuel, thus removing the most dangerous forms of waste from the fuel cycle. The researchers have patented the concept for a novel fusion-fission hybrid nuclear reactor that would use nuclear fusion and fission together to incinerate nuclear waste.
According to data from a 2008 Business R&D and Innovation Survey by the National Science Foundation, businesses perform the lion's share of their R&D activity in just a small number of geographic areas, particularly the San Jose-San Francisco-Oakland area and the New York-Newark-Bridgeport area.
NIST unveiled a new laboratory designed to demonstrate that a typical-looking suburban home for a family of four can generate as much energy as it uses in a year. Following an initial year-long experiment, the facility will be used to improve test methods for energy-efficient technologies and develop cost-effective design standards for energy-efficient homes that could reduce overall energy consumption and harmful pollution, and save families money on their monthly utility bills.
Though costly to produce, hydrogen is crucial for the oil-refining industry and the production of essential chemicals such as the ammonia used in fertilizers. The recent invention of a new photocatalyst may help the efficiency of this process. Nanometer-scale “Janus” structures consisting of cheap metal and oxide spheres were recently demonstrated as an excellent catalyst for a hydrogen-production reaction powered only by sunlight.
According to a new study that measured the rate at which bacteria in the Gulf of Mexico ate the oil and gas discharged by the broken Deepwater Horizon well, at least 200,000 tons of hydrocarbons were consumed by gulf bacteria over a five month period.
A team of researchers has developed a control algorithm that, when used in conjunction with previously developed wave prediction technology, helps wave energy converters calculate the correct amount of force needed to collect the maximum energy possible, allowing the device to respond to each wave individually.
There is enough energy available in winds to meet all of the world's demand. Atmospheric turbines that convert steadier and faster high-altitude winds into energy could generate even more power than ground- and ocean-based units, according to a Carnegie Institution of Science study.
Today's light-emitting diode light bulbs have a slight environmental edge over compact fluorescent lamps. And that gap is expected to grow significantly as technology and manufacturing methods improve in the next five years, according to a new report from Pacific Northwest National Laboratory and U.K.-based N14 Energy Ltd.
Researchers at Rice University and from Belgium have developed a way to make flexible components for rechargeable lithium-ion batteries from discarded silicon. The researchers created forests of nanowires from high-value but hard-to-recycle silicon. Silicon absorbs 10 time more lithium than the carbon commonly used in lithium-ion batteries.
Spinach power has just gotten a big boost. An interdisciplinary team of researchers at Vanderbilt University have developed a way to combine the photosynthetic protein that converts light into electrochemical energy in spinach with silicon, the material used in solar cells, in a fashion that produces substantially more electrical current than has been reported by previous "biohybrid" solar cells.
Researchers at NIST's Physical Measurement Laboratory have devised a novel source of portable sunlight that may fill an urgent need in renewable energy research—namely, light sources that generate a near-perfect solar spectrum to be used in testing the performance and efficiency of photovoltaic materials.
Scientists and engineers are working to find a way to power the planet using solar-powered fuel cells. Such green systems would split water during daylight hours, generating hydrogen that could then be stored and used later to produce water and electricity. But robust catalysts are needed to drive the water-splitting reaction. Chemists at Caltech have determined the dominant mechanism for cobalt catalysts, a cheaper alternative to platinum catalysts.
Solar panels, like those commonly perched atop house roofs or in sun-drenched fields, quietly harvesting the sun's radiant energy, are one of the standard-bearers of the green energy movement. But could they be better—more efficient, durable, and affordable? That's what engineers from Drexel University and the University of Pennsylvania are trying to find out, with the aid of a little nanotechnology and a lot of mathematical modeling.
Since 2007, researchers at the BioEnergy Science Center have partnered to figure out how to break down plants so that they easily release the simple sugars that can be processed into biofuels. It's a breakthrough that could make biofuels cost competitive with gasoline. Now, University of Georgia researchers who are part of the team have taken an important step toward that goal by identifying a previously uncharacterized gene that plays a major role in cell wall development of Arabidopsis plants.
Most Americans don't have to think much about energy reliability. We plug in a computer and it powers up; we flip a switch and the lights come on. While very reliable today. the U.S. electricity grid is old and has gone at least five decades without a significant technological upgrade. The National Renewable Energy Laboratory is working with industry on one solution to help maintain a secure, reliable flow of energy: microgrids.
During the next four years, research teams who have been the recipients of 15 innovation grants totalling $30 million from the National Science Foundation will pursue transformative, fundamental research in three emerging areas: flexible electronic systems that can interface with the body; self-folding materials and structures; and large-scale chemical production from photosynthesis.
The same type of microwave oven technology that most people use to heat up leftover food has found an important application in the solar energy industry, providing a new way to make thin-film photovoltaic products with less energy. Engineers at Oregon State University have, for the first time, developed a way to use microwave heating in the synthesis of copper zinc tin sulfide, a promising solar cell compound.
Scientists at the University of Cambridge have produced hydrogen, a renewable energy source, from water using an inexpensive catalyst under industrially relevant conditions—using pH neutral water, surrounded by atmospheric oxygen, and at room temperature.