A cobalt-based thin film serves double duty as a new catalyst that produces both hydrogen and oxygen from water to feed fuel cells, according to scientists at Rice Univ. The inexpensive, highly porous material may have advantages as a catalyst for the production of hydrogen via water electrolysis. A single film far thinner than a hair can be used as both the anode and cathode in an electrolysis device.
More American homes could be powered by the Earth's natural underground heat with a new, nontoxic and potentially recyclable liquid that is expected to use half as much water as other fluids used to tap into otherwise unreachable geothermal hot spots. The fluid might be a boon to a new approach to geothermal power called enhanced geothermal systems.
Cool roofs can help keep buildings cool, thus lowering the building’s energy use, while also mitigating the urban heat island effect by reflecting sunlight away from buildings and cities. But as cool roofs age and get soiled, how much of their reflectance do they lose?
Scientists focused on producing biofuels more efficiently have a new powerful data set to help them study the DNA of microbes that fuel bioconversion and other processes. In a recently published paper, researchers describe methods and results for sequencing the Clostridium autoethanogenum bacterium. These and other microorganisms play important roles in biofuels, agriculture, food production, the environment, health and disease.
You’re going to have to think very small to understand something that has the potential to be very big. A team of researchers developed a material that acts as a superhighway for ions. The material could make batteries more powerful, change how gaseous fuel is turned into liquid fuel and help power plants burn coal and natural gas more efficiently.
In a talk at the Kennedy School on Tuesday, physicist Amory Lovins outlined a path to a clean-energy future in the United States.
Researchers at The Univ. of Manchester have made a significant breakthrough in the development of synthetic pathways that will enable renewable biosynthesis of the gas propane. This research is part of a program of work aimed at developing the next generation of biofuels.
An eruption of lithium at the tip of a battery's electrode, cracks in the electrode's body and a coat forming on the electrode's surface reveal how recharging a battery many times leads to its demise. Using a powerful microscope to watch multiple cycles of charging and discharging under real battery conditions, researchers have gained insight into the chemistry that clogs rechargeable lithium batteries.
Scientists have made a discovery that could dramatically improve the efficiency of batteries and fuel cells. The research involves improving the transport of oxygen ions, a key component in converting chemical reactions into electricity. The team studied a well-known material, gadolinium doped ceria, which transports oxygen ions and is currently in use as a solid-oxide fuel cell electrolyte.
Carbon capture will play a central role in helping the nations of the world manage and reduce their greenhouse gas emissions. Many materials are being tested for the purpose of capturing carbon dioxide. But now researchers led by the Norwegian Univ. of Science and Technology have found that ordinary clay can work just as effectively as more advanced materials.
In the four years following the 2008 recession, the coal industry lost more than 49,000 jobs, while the natural gas, solar and wind industries together created nearly four times that amount, according to a new Duke Univ. study. A county-by-county geographical analysis of the losses and gains shows that few new jobs were added in regions hardest hit by coal’s decline, particularly counties in southern West Virginia and eastern Kentucky.
A team of Virginia Tech researchers has discovered a way to create hydrogen fuel using a biological method that greatly reduces the time and money it takes to produce the zero-emissions fuel. This method uses abundantly available corn stover to produce the hydrogen. The team's new findings could help speed the widespread arrival of the hydrogen-powered vehicles in a way that is inexpensive and has extremely low carbon emissions.
Researchers at the Univ. of Houston have reported developing an efficient conductive electron-transporting polymer, a long-missing puzzle piece that will allow ultrafast battery applications. The discovery relies upon a "conjugated redox polymer" design with a naphthalene-bithiophene polymer, which has traditionally been used for applications including transistors and solar cells.
Researchers have made what they believe is the first metal-free bifunctional electrocatalyst that performs as well or better than most metal and metal-oxide electrodes in zinc-air batteries. Zinc-air batteries are expected to be safer, lighter, cheaper and more powerful and durable than lithium-ion batteries common in mobile phones and laptops and increasingly used in hybrid and electric cars.
Stanford Univ. scientists have invented the first high-performance aluminum battery that's fast-charging, long-lasting and inexpensive. Researchers say the new technology offers a safe alternative to many commercial batteries in wide use today.
Clearing grasslands to make way for biofuels may seem counterproductive, but Univ. of Wisconsin-Madison researchers show in a study that crops, including the corn and soy commonly used for biofuels, expanded onto 7 million acres of new land in the U.S. over a recent four-year period, replacing millions of acres of grasslands.
Drivers trying to get to work or home in a hurry know traffic congestion wastes a lot of time, but it also wastes a lot of fuel. In 2011, congestion caused people in U.S. urban areas to travel an extra 5.5 billion hours and purchase an extra 2.9 billion gallons of fuel costing $121 billion. But despite the tangle of vehicles at busy intersections and interstate ramps, most of the country’s highways are open road.
The dramatic rise of smartphones, tablets, laptops and other personal and portable electronics has brought battery technology to the forefront of electronics research. Even as devices have improved by leaps and bounds, the slow pace of battery development has held back technological progress. Now, researchers have successfully combined two nanomaterials to create a new energy storage medium.
Solar panels, wind turbines, electric vehicles and other power sources are proliferating rapidly, but their reliable integration into the existing electric grid is another story. A new study offers a comprehensive reimagining of the power grid that involves the coordinated integration of small-scale distributed energy resources. The study, asserts that the proliferation of renewable energy must happen at the periphery of the power grid.
Don't throw away those bouncing batteries. Researchers at Princeton Univ. have found that the common test of bouncing a household battery to learn if it is dead or not is not actually an effective way to check a battery's charge.
In the first study of its kind, scientists at Lawrence Berkeley National Laboratory quantitatively show that electric vehicles (EVs) will meet the daily travel needs of drivers longer than commonly assumed. Many drivers and much prior literature on the retirement of EV batteries have assumed that EV batteries will be retired after the battery has lost 20% of its energy storage or power delivery capability.
Sitting in traffic during rush hour is not just frustrating for drivers; it also adds unnecessary greenhouse gas emissions to the atmosphere. Now a study by researchers at Massachusetts Institute of Technology could lead to better ways of programming a city’s stoplights to reduce delays, improve efficiency and reduce emissions.
A study found government biofuel policies rely on reductions in food consumption to generate greenhouse gas savings. Shrinking the amount of food that people and livestock eat decreases the amount of carbon dioxide that they breathe out or excrete as waste. The reduction in food available for consumption, rather than any inherent fuel efficiency, drives the decline in carbon dioxide emissions in government models, the researchers found.
In a broad new assessment of the status and prospects of solar photovoltaic technology, Massachusetts Institute of Technology researchers say that it is “one of the few renewable, low-carbon resources with both the scalability and the technological maturity to meet ever-growing global demand for electricity.”
Straw-powered cars could be a thing of the future thanks to new research from the Univ. of East Anglia. A new study pinpoints five strains of yeast capable of turning agricultural by-products, such as straw, sawdust and corncobs, into bioethanol. It is estimated that more than 400 billion litres of bioethanol could be produced each year from crop wastage.