When it comes to capturing the energy of the sun, what better model is there than photosynthetic plants? Researchers at North Carolina State University have cultivated a beautiful crop of germanium sulfide (GeS) "nanoflowers" that could be used to create next generation solar cells and ultra high-density energy storage systems. The nanoflowers have petals that resemble those of a geranium or marigold - although they're only 20-30 nanometers thick and they're capable of storing much more energy than traditional energy storage cells.
Read the rest of Scientists Create Gorgeous Nanoflowers for Next-Gen Solar Cells and Ultra High-Density Energy Storage
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Showing posts with label chemistry. Show all posts
Showing posts with label chemistry. Show all posts
Monday, December 23, 2013
Thursday, December 19, 2013
Nanocomposite Magnet Materials
Expanding the renewable energy splitting up utilitarian mining better-quality and better-quality of these lightly cooked earths. That is environmentally strenuous. Their unusual person suggests their availability is uncomfortable and that they apparition manifestly walk better-quality constructive. The geographic place of these materials makes their availability politically unreliable as confidentially. (GW)
New Magnets May perhaps Unstitch Our Rare-Earth Trouble
Researchers are carrying out on composites that would make extreme magnets that need beneath of the hard-to-get ingredients. By Katherine Bourzac
Tackle Summarize
January 20, 2011
Stronger, lighter magnets might plan the promote in the pending few soul, making better-quality well-run car engines and wind turbines practicable. Researchers need the new materials so today's data magnets use rare-earth metals, whose supply is decent fishy total as pressure grows.
So researchers are now carrying out on new types of nanostructured magnets that would use less significant amounts of rare-earth metals than prototypical magnets. Masses hurdles locate, but GE Large-scale Sift hopes to whisk new finish equal materials inside the pending two soul.
The strongest magnets rely on an alloy of the rare-earth metal neodymium that moreover includes iron and boron. Entice makers sometimes add other rare-earth metals, as well as dysprosium and terbium, to these magnets to healthier their properties. Bits and pieces of all three of these lightly cooked earths are at jeopardy so of mounting pressure and the opportunity that Chinaware, which produces best of them, apparition tablet exports.
At a halt, it's not clear if the new magnets apparition get to promote in front the pressure for rare-earth metals exceeds the supply. The U.S. Demarcation of Vivacity projects that entire production of neodymium oxide, a key branch in magnets, apparition maintain equilibrium 30,657 lots in 2015. In one of the DOE's wished-for scenarios, pressure for that metal apparition be a bit forward-looking than that deal out in 2015. The DOE's scenarios convey some assumption, but the best set to rights presume has pressure for neodymium exceeding supply by about 2020.
"A lot of the rest about lightly cooked earths has devoted answer Chinaware and mining," says Steven Duclos, advanced of solid sustainability at GE Large-scale Sift. "We sum technology can con a function in addressing this." The DOE is financial backing GE's finish equal project, and one led by researchers at the University of Delaware, next to the A cut above Sift Projects Agency-Energy (ARPA-E) program, which fosters research in vogue difficult technology.
Upcoming up with new finish equal materials is not undemanding, says George Hadjipanayis, keep control of the physics and astronomy office at the University of Delaware. Hadjipanayis was multiplex in the development of neodymium magnets in the 1980s since carrying out at Kollmorgen. "At that kick, in all probability we all got satisfactory," he says of the earliest development of neodymium magnets. The way researchers prepared new magnets in the past was to thicken alloys and look for new forms with disregard properties. This method won't trade leave-taking authorize. "Neodymium finish equal reading has plateaued," says Unlocked Johnson, who heads GE's finish equal research program. Hadjipanayis agrees. "The ornamental now is nanocomposites," he says.
Nanocomposite finish equal materials are prepared up of nanoparticles of the metals that are fright in today's fascinating alloys. These composites have, for example, neodymium-based nanoparticles dissimilar with iron-based nanoparticles. These nanostructured regions in the finish equal make contacts in a way that leads to huge fascinating properties than intimates fright in recognized fascinating alloys.
The initiation of nanocomposites for magnets is twofold: nanocomposites trademark to be stronger than other magnets of be keen on size, and they have to use beneath rare-earth metals. In the role of enables disregard fascinating properties in these nanocomposites is a realm called toggle combination. The physics are uncomfortable, but combination involving different nanoparticles in the intricate leads to arrant fascinating properties that are huge than the sum of the parts.
Go back and forth combination can't show in natural finish equal materials, but emerges in composites prepared of mixtures of nanoparticles of the exact metals that are used to make recognized magnets. "The initiation of stronger magnets is that the machines you put them in can be less significant and lighter," says Johnson.
GE would not disclose which materials it's using to make the magnets, or what its developed methods would be, but Johnson says the company apparition rely on techniques it has developed to trade with other metals. The main concern the company faces, says Johnson, is scaling up production to make large magnets-so far it's straightforwardly been practicable to make free cinema of the nanocomposites. The company has about 2.25 million in financial backing from ARPA-E.
Hadjipanayis reports his gathering, a multi-institute have confidence in, has traditional in this area 4.5 million in ARPA-E financial backing. It's practicable to make the obligatory nanoparticles in small quantities in the lab, but scaling up apparition be flawed. "They're highly receptive materials," he says.
The gathering is experimenting with a vast stretch to of different types of nanoparticles, as well as combinations of neodymium-based nanoparticles with iron-cobalt nanoparticles. Several money is assembling the nanoparticles in a recipe that ensures they have ample style with also other to get toggle combination. "It's one layer at a kick," says Hadjipanayis.
Copyright Tackle Summarize 2011.
Labels:
chemistry,
electromagnetism,
energy
Wednesday, November 13, 2013
Germanys Energy Revolution Picks Up Pace But Questions Remain Over Coal
"AUTHORED BY HENNER WEITH"oNER, REPOSTED FROM CLIMATE NEWS NETWORK"
The energy market in Germany's saw a spectacular change last year as renewable energy became the major source of its electricity supply - leaving lignite, coal and nuclear behind.
But researchers calculate that, allowing for the mild winter of 2014, the cut in fossil fuel use in energy production meant CO2 emissions fell by only 1%.
Wind, solar, hydropower and biomass reached a new record, producing 27.3% (157bn kilowatt hours) of Germany's total electricity and overtaking lignite (156bn kWh), according to AGEB, a joint association of energy companies and research institutes.
This was an achievement that many energy experts could not have imagined just a few years ago.
Lowest Level
Beyond that, Germany's primary energy consumption - which includes the energy used in power generation, heating and transport - fell to its lowest level since reunification with East Germany in 1990, AGEB report. It shrank by 4.8% compared with 2013.
Estimates by AGEB indicate that Germany's CO2 emissions will have fallen in 2014 by around 5% compared with 2013, as consumption of all fossil fuels fell and the contribution from renewables rose. Half the CO2 savings came from power generation.
Germany's use of hard coal - sometimes called black coal, which emits much less CO2 than brown coal, as lignite is known - in electricity generation was 7.9% lower than in 2013, and lignite 2.3%. The share of fossil fuels in the overall energy mix fell from 81.9% in 2013 to 80.8%.
"My most urgent wish for the energy future is that Germany must stop using coal"
At first sight, that looks like a big success story. But it comes after several years of rising emissions that have cast doubt on the "Energiewende" - the ambitious German energy transition plan for a simultaneous phase-out of nuclear power and a move to a carbon-free economy.
While all of Germany's remaining nine nuclear power plants must by law be shut down no later than the end of 2022, there is no such legally-binding phase-out for the coal industry. So no one can tell how long Germany will go on burning the worst climate change contributors, lignite and hard coal.
Dirty 30
In July 2014, a group of NGOs published a study on the EU's 30 worst CO2-emitting thermal power plants. German power stations featured six times among the 10 dirtiest.
Never heard of Neurath, Niederausssem, J"anschwalde, Boxberg, Weisweiler and Lippendorf? These are the sites of Germany's lignite-powered stations, which together emit more than 140 megatonnes of CO2 annually - making Germany Europe's worst coal polluter, followed by Poland and the UK.
And international banks, including Germany's biggest investment bank, keep on financing coal. A study by BankTrack shows that 92 commercial banks financed the coal industry in 2013 to the tune of at least EUR66bn - a new record. The top investor was the US bank JP Morgan Chase. Deutsche Bank was tenth.
That level of investment puts into perspective the US 10bn that is now in the UN's Green Climate Fund to help developing nations fight climate change.
Germany has one of the most ambitious climate targets worldwide: by 2020, its CO2 emissions are due to be 40% below their 1990 level. But how can it achieve this?
Climate Goals
The latest Climate Protection Action Plan, adopted by the German Cabinet on 3 December last year, says that 22 million tonnes of CO2 will be saved "by further measures, especially in the power sector".
Does that mean less power from coal? In any case, it will not put Germany back on track, as nearly 80 million tonnes of CO2 must be saved to reach the country's 2020 climate goals. The Greens pointed out that a coal-fired power plant such as J"anschwalde alone produces more than 22 million tonnes of CO2 - and J"anschwalde is not even the biggest German polluter.
So, right now, the Energiewende seems a story both of success and of failure.
Mojib Latif, the German meteorologist and oceanographer who co-authored the IPCC's Fifth Assessment Report, says: "The only way of countering the rise in CO2 is to expand renewables. The technology is there - it just has to be used.
"My most urgent wish for the energy future is that Germany must stop using coal. Otherwise we have no chance of achieving our climate targets."
Saturday, September 14, 2013
Company Creates Bacteria That Eats Co2 And Creates Ethanol
Saturday, July 28, 2012
Warming Up Global Warming And Alternative Power Source
Labels:
chemistry,
energy,
greenhouse gas
Tuesday, March 13, 2012
This Years World Water Day Focuses On Water And Energy But Energy Companies Seem Complacent About Water Risks
By Dave Tickner
21 Stagger 2014(Supporter Not wasteful) - All hydro, no power?
Yesterday afternoon I complete a list. I'd in imitation of to break up it with you: Alon, Astrophysical Alliance, Eskom, GDF Suez, Iberdrola, Ranhill Berhad, Sasol. Can you reckon what it's about? If not, don't flutter. All thrust be disallowed.
I complete the list like perusing the website of the CEO River Board. The Board, give arms to of the UN Universal Accurate, was fix in 2007 "to slip companies in the development, implementation, and astound of water sustainability policies and practices". It's the most from top to bottom of the various earthly platforms which aim to confirmation businesses to break through and make the acquaintance of water-related risks.
As of yesterday, the CEO River Board website knock down 74 signatory companies. The seven companies I've knock down first-class were, as far as I might impart, the release signatories from the energy sector.
By way of comparison, I counted better-quality than 20 companies on the list from the farming, feed and thirst-quencher sector and about a dozen from the squash and dissertation industry. This got me thinking, as I inlet to do modestly habitually righteous, about the food-water-energy "nexus" (a horrific untruth but it's all the rage now; I'd be overjoyed if a person can put forward a better alternative). Deliberately, I commence for my part wondering whether the energy sector has glowing grasped the undertake implications of this 21st century resource trilemma.
In a progressive blog, Diego Rodriguez and Marcelino Madrigal from the World Bank set out the impacts water severity might suffer on energy production. They knock down shut-downs, affluent refits and capacity reductions which had hit power plants in Australia, South Africa, the US and India.
Reuters now reported energy expense hikes and feasible power rationing in Brazil as a send away of dryness. Censure by the Transnational Pry open Department adds bump up stress to the label for water and energy planners to pay out better-quality quality wait all together. The IEA reckons that water use by the energy sector thrust originate wonderfully in the past few decades and that go in to water might be a effort for power generators in many countries.
The risks are here and now, and they are geological to magnify. As an state, the IEA consideration above that development pathways focused on energy efficiency, solar PV and wind power wouldn't magnify water needs substantially, an thoughts backed up by progressive research from the universities of Newcastle and Oxford: a win-win for energy, for water pledge and for earthly sustainability.
So is the sector in the role of complacent? In most countries, energy generation has been regarded historically as a basis precedence in the role of it comes to water destiny, for apparent reasons: if there's no power, economies grind to a bracket. But as the world gets thirstier, and water use trade-offs happen better-quality smarting, this may not ever be the smooth in the afar. [better-quality]
The energy sector is wadding sustaining on water challenges Technorati Tags: freshwater pour out,dryness,California,oil production,coal,India,Australia,North America
Labels:
chemistry,
energy,
organoiodides
Saturday, March 12, 2011
New Catalyst Could Lead To Less Expensive Fuel Cells
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RESEARCH TEAM DEVELOPS A NEW CATALYST FOR FUEL CELLS COMPRISED OF IRON AND CARBON
Researchers from Finland's Aalto University have successfully developed a new catalyst that can be used in fuel cells. The catalyst is meant to serve as an alternative to platinum catalysts that are quite common in fuel cell energy systems. Conventional catalysts are notoriously expensive, because they are made from platinum, and this affects the total cost of a fuel cell system. By replacing platinum, fuel cells can be more affordable and attractive to those interested in renewable energy.
NEW CATALYST COULD BE A SUITABLE REPLACEMENT FOR THOSE THAT USE PLATINUM
The new catalyst developed by the research team is comprised of iron and carbon, which means that it is significantly less expensive than catalysts made from platinum. According to researchers, the new catalyst is as efficient as those that use platinum, which is a major success in the field of fuel cell research. In order to produce the catalyst, the research team developed a new manufacturing process that allowed them to make use of inexpensive materials.
Carbon Nanotubes, Graphene, And Iron Make Up The Catalyst
Carbon nanotubes are used for much of the catalyst's structure, providing much needed support. This material can also conduct electricity extremely well, making an ideal tool for catalyst development. The nanotubes are applied to the catalyst's iron structure, which is covered with graphene. The manufacturing process can be completed in one stage, making it highly efficient and significantly less expensive process when compared to conventional catalyst manufacture.
Better Catalysts Could Reduce The Costs Associated With Fuel Cells
Finding ways to reduce the costs associated with fuel cells has become quite important. These energy systems are gaining popularity throughout the world and are being used to power clean vehicles and even homes. The problem, however, is that they are very expensive, and their high cost has limited their adoption. Less expensive catalysts could solve this problem, to some degree, and help make fuel cells more attractive to consumers and businesses that want to embrace renewable energy.
For more alternative energy news headlines today.
Labels:
chemistry,
emerging technologies,
energy
Friday, February 6, 2009
Hydrogen Storage
Origin: clean-energy-technologies.blogspot.com
Labels:
chemistry,
energy,
hydrogen technologies
Friday, May 16, 2008
Bioenergy Bytes
* New orders of clean diesel and diesel-electric hybrid buses by transit agencies in major communities like San Francisco, Chicago, Detroit, and New York over the past year are a strong indication that clean diesel technology is still the all-around best choice for public transportation according to Allen Schaeffer, executive director of the Diesel Technology Forum. "These new clean diesel powered buses offer the most modern and advanced technology to transit fleets in a much more cost-efficient manner than other fuel sources," Schaeffer said. "It's because of the safety, reliability and efficiency now coupled with new environmental performance that makes diesel the predominant power source for public transit, as well as school and intercity bus services nationwide."
* R'emi Gruet has been appointed CEO of Ocean Energy Europe - the trade association for ocean renewable energy. Gruet joined Ocean Energy Europe as Policy & Operations Director last year and succeeds Dr. Sian George, who was appointed to oversee the reinvention of the association as Ocean Energy Europe in 2012. Gruet will be tasked with shaping the policy context that will help Europe's ocean energy sector reach commercialisation over the coming decade.
* Henry Ford's 20th-century vision of a bioeconomy rich with fuels developed from vegetable matter is far from a reality. What will it take to shift the fossil-fuel-based energy of the present into a future sustainable, modern bioeconomy? "Bioenergy Connection", the magazine produced by the Energy Biosciences Institute (EBI), confronts that question in its latest issue. The article looks at the state of advanced biofuels and technologies today, as well as offering closer examinations of two biofuels, bio-butanol and biodiesel. Other features address the promise of aviation biofuels, flex fuels in the United States, and the history of sugarcane ethanol in Brazil. In a series of articles, experts also examine the dramatic debut of commercial cellulosic ethanol, the process of separating sugars from biomass, and bioprospecting for potential microbes to aid in biofuels production.
Labels:
chemistry,
energy,
sustainability
Tuesday, April 8, 2008
Seaweed Can Be A Potential Raw Material For Biofuel
So far, the go forth is commencing small. Mr. Suryanarayan has raised 655,500 from investors, with India's Division of Biotechnology -which is precise for the rest to enlarge its production of green fuels - and quite a lot of appeal investors.
"Why don't we representation at the sea for producing bio fuels " Mr. Suryanarayan, a tutor at India's alluring Institute of Equipment Madras and a bygone bigger executive at Biocon, a prime Indian biotechnology company, says he asked himself a few verve ago.
Put off seaweed concerning a commercially realistic green fuel is a ache grow. Until now, the green algae has not been used for biofuels as few organisms can obsess the sugar that seaweed produces - a fitting achieve to producing ethanol regular as fermentation.
But Mr. Suryanarayan says his company has proudly been able to clique red seaweed concerning ethanol in the lab by means of a fermentation process which uses mean mildew. "We've given away that we can convert it to ethanol inadequate relying on any genetically custom-made germ," he says.Added researchers gorge been looking at genetically modifying germ in the lab to make it finer energetic at fermenting sugar concerning ethanol. In January, the record Science published a scrutinize by researchers from Berkeley, California, who understood they'd genetically engineered a germ that may well feed on the sugars in seaweed and clique them concerning ethanol. The research may well restrain the due of revolving seaweed concerning ethanol.The benefits of producing green fuel from seaweed are large. It's fast-growing and doesn't use up unlikely water resources due to its production - a tone benefit in drought-plagued India. It can be developed flamboyantly on the edge of India's ache coastlines. And it doesn't gain land to a different place from other dispose of crops care for rice or wheat. (Several critics of biofuels complete from bump, palm oil or sugarcane say their production takes up land that would facing be used to bank dispose of, pushing up prices.)India today makes best of its biofuel from sugar-cane. But that crop is any in bill from invigorating make makers and shade producers, which has nation its availability for green-energy production. Denial of land and water resources any has dimmed the scenario for green fuel.That's why India's been not qualified to cope with a frank of producing 5% of its unmovable fossil fuel requests from green energy. At the moment, biofuels record for on your own 3% of unmovable fuel use. India's biofuels frank for 2017 is an obsessed 20% - whatever thing that seems made known to work by means of biofuels resultant from sugarcane.Of government, seaweed-derived biofuel production won't cage overnight. Mr. Suryanarayan isn't expecting to get a experimental production plant up and tidy for two verve. He's in suspense to difficult ally with large Indian or unknown energy companies to scale up commercial production.The main money for Sea6 Soul is to clique what it's given away on land in the lab - that seaweed can be turned concerning fuel - concerning a truth at sea as very well. The company is dynamic with Denmark-based Novozymes A/S NZYM-B.KO +0.68%, a biotechnology company, to vestige a way to finer effortlessly break unhappy carbohydrates from seaweed concerning sugars that can be fermented.Mr. Suryanarayan says put on are advantages to red seaweed expert other seaweeds that make it a good bet for a commercial biofuel association. For one, it grows at a boost put up with per hectare - about 100 to excess per hectare or a propos back the put up with of quite a lot of land-based plants. That option make it easier to pass the epic amounts of biomass wanted to make commercially-viable amounts of ethanol. The occurrence is to pass the ethanol in the sea, obviating the need to use frighten water on land.Sea6 Soul has ready structures that may well have the funds for farmers to bank seaweed in deeper waters literally than foam-covered seas, a technology that may well greatly enlarge production of the biomass.What's finer, Mr. Suryanarayan says, biomass from red seaweed can be used for other purposes, such as in the production of face-paint. That rites the company can stream with moment in time one of its project - increasing the seaweed - inadequate the lay bets that the biomass is pallid.
Labels:
chemistry,
energy,
sustainability
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