Although low-temperature fuel cells powered by methanol or hydrogen have been well studied, existing low-temperature fuel cell technologies can’t directly use biomass as a fuel because of the lack of an effective catalyst system for polymeric materials. Now, researchers have developed a new type of low-temperature fuel cell that directly converts biomass to electricity with assistance from a catalyst activated by solar or thermal energy.
The energy industry includes a broad array of companies, ranging from multinational oil and gas...
Toyota is promising a mass-produced fuel cell car by 2015 in the latest ambitious push to go...
Billions of euros are spent treating trillions of liters of wastewater every year, consuming...
A research team, led by the Univ. of California, Santa Cruz, developed a solar-microbial device that combines a microbial fuel cell (MFC) and a photoelectrochemical cell (PEC). In the MFC component, bacteria degrade organic matter in the wastewater, generating electricity. The biologically generated electricity is delivered to the PEC component to assist the solar-powered splitting of water that generates hydrogen and oxygen.
Bacterial cells use an impressive range of strategies to grow, develop and sustain themselves. Despite their tiny size, these specialized machines interact with one another in intricate ways. In new research conducted at Arizona State Univ.’s Biodesign Institute, researchers explore the relationships of two important bacterial forms, demonstrating their ability to produce electricity by coordinating their metabolic activities.
Carbon monoxide is a poisoning impurity in hydrogen derived from natural gas. If a catalyst could be developed that can handle this impure fuel, it could be a substantially less expensive alternative to pure hydrogen produced from water. Scientists at Brookhaven National Laboratory have used a simple, “green” process to create a new core-shell catalyst that tolerates carbon monoxide in fuel cells.
Engineers and scientists at the Pacific Northwest National Laboratory have developed an app that focuses on hydrogen safety. The Hydrogen Tools app comes at a time when the use of fuel cells is growing. Fuel cells generate electricity by driving electrochemical reactions using hydrogen and air, producing power with dramatically reduced emissions compared to traditional hydrocarbon-based fuels. The only byproducts are heat and water.
A formal partnership agreement to encourage collaborative research, build educational and workforce development programs and inform policy endeavors regarding renewable energy efforts has been signed by Sandia National Laboratories and Arizona State Univ. The move will facilitate multidisciplinary collaborations and help them secure research funding.
Fuel cells are typically viewed as complex or expensive devices. However, Point Source Power and Lawrence Berkeley National Laboratory’s VOTO rugged metal-supported solid-oxide fuel cell is a simple, affordable technology that can operate directly on hydrocarbon fuels in the relatively uncontrolled environment of a cookstove.
Grocery merchants in Texas, California and New York will soon have ice cream, frozen foods and fresh produce delivered by tractor trailers whose refrigeration units are powered by fuel cells. The fuel cells will do the work normally done by a small diesel engine, which keeps the cargo at the proper temperature while the trucks are making deliveries.
A new cost-effective polymer membrane can decrease the cost of alkaline batteries and fuel cells by allowing the replacement of expensive platinum catalysts without sacrificing important aspects of performance, according to Penn State Univ. researchers.
A generator that uses a virus to convert mechanical energy to electricity and a new material that will boost power storage in rechargeable batteries by 30% are among eight inventions by Lawrence Berkeley National Laboratory scientists that were honored with a 2013 R&D 100 Award, often dubbed the “Oscars of Innovation.”
Hydrogen fuel cells are already powering mobile lighting systems, forklifts, emergency backup systems and light-duty trucks, among other applications. Now, researchers at Sandia National Laboratories have found that hydrogen fuel cells may be both technically feasible and commercially attractive as a clean, quiet and efficient power source for ships at berth, replacing on-board diesel generators.
The research team of Ulsan National Institute of Science and Technology paved a new way to affordable fuel cells with efficient metal-free electrocatalysts using edge-halogenated graphene nanoplatelets. The research team, for the first time, reportedly synthesized a series of edge-selectively halogenated graphene nanoplatelets by ball-milling graphite flake in the presence of chlorine, bromine or iodine, respectively.
To improve fuel cell module durability and predict longevity, researchers are studying the degradation mechanisms of the fuel cells that occur under real-world transit bus conditions. While quantifying the effects of electrode degradation stressors in the operating cycle of the bus on the membrane lifetime, the team has discovered links between electrode degradation and membrane durability.
Researchers working to improve durability in fuel cell-powered buses, including a team from Simon Fraser University in Canada, have discovered links between electrode degradation processes and bus membrane durability. The team is quantifying the effects of electrode degradation stressors in the operating cycle of the bus on the membrane lifetime.
Fuel cells make electricity by combining hydrogen, or hydrocarbon fuels, with oxygen. But the most efficient types, called solid-oxide fuel cells, have drawbacks that have limited their usefulness—including operating temperatures above 700 C. Now, researchers have unraveled the properties of a promising alternative material structure for a key component of these devices.
In some parts of the developing world, people may live in homes without electricity or running water, but yet they own cell phones. To charge those phones, they may have to walk for miles to reach a town charging station. Now a startup company has created a simple, inexpensive way to provide electricity to the 2.5 billion people in the world who don’t get it reliably.
To make fuel cells more economical, engineers want a fast and efficient iron-based molecule that splits hydrogen gas to make electricity. Researchers at Pacific Northwest National Laboratory have recently reported the development of such a catalyst. Made from a synthetic molecule, it is the first iron-based catalyst that converts hydrogen directly to electricity, and it might help make those fuel cells less expensive.
The argument that those who have fuel-efficient cars drive them more and hence use more energy is overplayed and inaccurate, a University of California, Davis economist and his co-authors say in a comment article published in Nature.
Super-small particles of silicon react with water to produce hydrogen almost instantaneously, according to University at Buffalo researchers. In a series of experiments, the scientists created spherical silicon particles about 10 nm in diameter. When combined with water, these particles reacted to form silicic acid and hydrogen—a potential source of energy for fuel cells.
Sulfur compounds in petroleum fuels have met their nanostructured match. University of Illinois researchers developed mats of metal oxide nanofibers that scrub sulfur from petroleum-based fuels much more effectively than traditional materials.
Engineers at Yale University have developed a new breed of micro fuel cell that could serve as a long-lasting, low-cost, and eco-friendly power source for portable electronics. Major components of the new device are made of bulk metallic glasses, which can be finely shaped and molded using a comparatively efficient and inexpensive fabrication process akin to processes used in shaping plastics.
Photoelectrochemical (PEC) tandem solar cells offer a way to produce hydrogen directly from water. But efforts to produce an efficient cell have only resulted in extremely expensive prototypes. Researchers in Switzerland have recently developed a PEC, however, that is made from inexpensive materials and achieves up to 16% efficiency.
Hydrogen production by solar water splitting in photoelectrochemical cells (PEC) has long been considered the holy grail of sustainable energy research. Iron oxide is a promising electrode material, and now an international team of researchers gained in-depth insights into the electronic structure of an iron oxide electrode, while it was in operation. This opens up new possibilities for an affordable hydrogen production from solar energy.
Using simple technology developed primarily for producing electricity from hydrogen, a team of researchers has developed what could be a commercially viable, continuous process for converting biomass and electricity into renewable liquid transportation fuels.
A team of researchers has recently been successful in synthesizing and characterizing monodisperse gold-core silver-shell nanoparticles utilizing a bio-template that has potential as a water soluble catalyst for converting biomass such as dead trees, branches and tree stumps, yard clippings, wood chips, and even municipal solid waste into fuels.
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.
- Page 1