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New Platinum Could Mean Cheaper, More Efficient Fuel Cells

Fuel cells are clean and green cells. They work without polluting the environment. Fuel cells are electrochemical devices that transform the chemical energy of a fuel into electricity generating water as a by-product. Fuel cells are most used in space flights but they can be best utilized in electric dell latitude d600 battery vehicles to reduce air pollution. Fuel powered electric vehicles are better than battery operated EVs as far as efficiency and faster refueling is concerned.

So what is stopping us from using fuel cells on commercial scale? Current fuel cell designs need around 100 grams of platinum. We know that platinum is a precious and costly metal and it pushes the price tags of fuel cells into thousands of dollars. Now researchers at the Department of Energy’s SLAC National Accelerator Laboratory and the University of Houston giving us some hope. They are talking about a new form of platinum that might be helpful in making cheaper lenovo thinkpad x200t battery, more efficient fuel cells. This work has been published in the April 25th issue of Nature Chemistry.

Anders Nilsson is a scientist, who conducts research at the Stanford Institute for Materials and Energy Sciences, a joint institute between SLAC and Stanford University. He shares his thoughts about the work, "This is a significant advance. Fuel cells were invented more than 100 years ago. They haven’t made a leap over to being a big technology yet, in part because of this difficulty with platinum.”

The team is trying to modify the platinum’s reactivity. This step will enable the researchers to cut back the quantity of platinum required by 80 percent. They are also quite positive about minimizing the quantity by another 10 percent. This will reduce the overall cost of the fuel cells. Nilsson says, "I think with a factor of ten, we’ll have a home run.”

Fuel cells work much like batteries. An anode gives out electrons and a cathode collects those electrons thus forming a circuit. So what is the difference between a fuel cell and a battery? Fuel cells use hydrogen and oxygen to complete their energy-producing reactions. The by-product is water and heat.

What metal is chosen for cathode is extremely important. Because some of the metals can’t break the oxygen molecule into atoms. And some bind strongly with oxygen so the important reactions don’t take place. Scientists are trying to attain a balance so that the number of oxygen bonds broken is maximized and the oxygen atoms attach feebly to the catalyst. Platinum helps the scientist in attaining that balance. It breaks the oxygen bonds but does not fasten to the free oxygen atoms too powerfully.

Since 2005, Peter Strasser of the University of Houston was trying to find a way out. He tried to make platinum more reactive. Strasser along with his team tried dealloying. First they created a copper-platinum alloy. Then they removed the copper from the platinum. They found that this alloy canon lp-e6 battery was much more reactive. Now the team will try to produce a potential replacement not only for petrol engines but also for the batteries found in small electronic devices.

MIT Working on More Powerful, Lightweight Batteries

A team of researchers at the Massachusetts Institute of Technology (MIT) is working on lithium-air batteries that could help in generating more powerful, lightweight batteries than available currently. Yang Shao-Horn is an MIT associate professor of mechanical engineering. According to him many research groups are trying to improve on lithium-air batteries. But they have difference of opinions about the types of electrode materials to be used. It has to be noted that electrode materials are responsible dell inspiron 1721 battery for electrochemical reactions happening inside these batteries.

Lithium-air batteries, also known as the lithium-oxygen batteries, work on the same principle as the lithium-ion batteries. Presently lithium-ion batteries are flooding the market and being used in the portable electronics and are a leading contender for electric vehicles. Lithium-air batteries possess a big advantage over conventional batteries. Their main components don’t have the heavy conventional compounds. They have a carbon-based air electrode and with flow of air these air-batteries are quite light hence can be utilized in electronics that themselves can be much lighter. Lithium-air batteries offer three times the energy density than the conventional batteries. They can be easily utilized in electronic devices and hybrid cars. Renowned companies like IBM and General Motors are sensing the potential lithium-air batteries hold that is why they are investing in major research projects on lithium-air technology.

How do lithium-air batteries work? Lithium-air lenovo thinkpad x40 battery electrochemically couple a lithium anode to oxygen derived from atmosphere. Their biggest advantage is their cathode is a carbon-based air cathode instead of the heavy conventional compounds found in lithium-ion batteries. This culminates in higher energy density because cathode is lighter and oxygen is available in surroundings.

Yang, along with some of the students and visiting professor Hubert Gasteiger are catching up with those electrodes that have gold and platinum working as catalysts. Gold or platinum electrodes exhibit a higher level of activity that naturally leads to higher efficiency. This work may open wider avenues for experimenting with other metals or metallic oxides that are cheaper than gold and platinum.

If we study the chemical properties of lithium we can learn that in metallic form, lithium is highly reactive in the presence of even a tiny fraction of water. But this will not cause any safety issue because in current lithium-ion batteries, carbon-based materials are used for the negative electrode. Shao-Horn explains that the same battery principle can be applied without using metallic lithium. They can choose graphite or some other more stable negative electrode materials leading to a safer system.

Doctoral student Yi-Chun Lu who is lead author of the paper, elaborates further. She explains that this team has devised a technique for analysing the activity of different catalysts in the batteries. They can look into a variety of possible materials as catalysts. She says, "Such research could allow us to identify the physical parameters that govern the catalyst activity. Ultimately, we will be able to predict the catalyst behaviours." Now researchers at MIT have made a breakthrough that would help the canon lp-e5 battery commercial development of lightweight rechargeable batteries.

Biofuels and Carbon Capture from Frog Foam?

Since time immemorial human beings are trying to use solar energy for their survival and day to day use. We know that green plants create their own food and energy with the help of photosynthesis. Photosynthesis happens in the presence of sunlight, water and carbon dioxide dell inspiron 1501 battery. The end results are food, chemical energy and release of oxygen gas. Whenever scientists tried to harness the solar energy they were quite unsuccessful in utilizing a major part of solar power. The conversation rate of solar energy into electrical energy is quite inefficient. Now engineering researchers at the University of Cincinnati are trying to overcome this problem.

The researchers are engaged in figuring out various methods to harness the power of the sun and carbon from the air to produce new forms of biofuels. And the help came from quite unusual quarters. Scientists of the University of Cincinnati received that help from semi-tropical frog species. They have published their work in Nano Letters. The project team consists of research Assistant Professor David Wendell, student Jacob Todd and College of Engineering and Applied Science Dean Carlo Montemagno. Now these scientists need photosynthetic material that can perform actual photosynthesis. For this the researchers put their energy on creating a new artificial photosynthetic material. This material takes lenovo batteries the help of enzymes derived from plant, bacteria, frog and fungi to manufacture sugar while taking in the sunlight and carbon dioxide. All these enzymes are trapped within a foam housing.

Dean Montemagno talks about his project, “This new technology establishes an economical way of harnessing the physiology of living systems by creating a new generation of functional materials that intrinsically incorporates life processes into its structure. Specifically in this work it presents a new pathway of harvesting solar energy to produce either oil or food with efficiencies that exceed other biosolar production methodologies. More broadly it establishes a mechanism for incorporating the functionality found in living systems into systems that we engineer and build.”

Now the interesting question is why the researchers have opted for foam? If we give careful thought to anything foamy we can easily recall that sunlight and air can very easily enter a foamy material. Another advantage is scientists were able to concentrate the reactants inside the foam. Foam was chosen because it can effectively concentrate the reactants but allows very good amount of light and air penetration. They drew inspiration for foamy material from a design based on the foam nests of a semi-tropical frog. This frog is known as the Tungara frog. They are known for producing a very long-lived foams for their developing tadpoles.

What is the advantage of using foam nests of semi-tropical frogs? One major advantage is since a foam nest is a non-living thing, it can convert all the sunlight it receives into sugar because it doesn’t have other life-related activities like respiration, digestion, reproduction, growth and excretion. Wendell clarifies further, “Our foam also uses no soil, so food production would not be interrupted, and it can be used in highly enriched carbon dioxide environments, like the exhaust from coal-burning power plants, unlike many natural photosynthetic systems.” He discusses another advantage, “In natural plant systems, too much carbon dioxide shuts down photosynthesis, but ours does not have this limitation due to the bacterial-based photo-capture strategy.”

Other advantages of the plant-like foam are that the sugar produced can be converted into many different things such as ethanol and other biofuels. Another great advantage is cultivatable land will still be available for production of important crops. As Wendell explains. “And it removes carbon dioxide from the air, but maintains current arable land for food production.”

Now the next logical step for the project team would be to make this technology feasible for large-scale applications like carbon capture at coal-burning power plants. Wendell explains, “This involves developing a strategy to extract both the lipid shell of the algae (used for biodiesel) and the Dell laptop Battery cytoplasmic contents (the guts), and reusing these proteins in the foam. We are also looking into other short carbon molecules we can make by altering the enzyme cocktail in the foam.”

More Energy-Efficient Communications Networks

Reputed companies are always conscious about their brand image and what a great way to build great brand lenovo thinkpad z60m 2529 battery by taking clean and green route! Bell Lab is the division of the Alcatel-Lucent. Currently Alcatel-Lucent is trying to invest in their communications networks to make it 1,000 times more energy efficient. They have launched a five year program known as “Green Touch.” Members affiliated with the Green Touch are AT&T, and China Mobile from industry; MIT and Stanford University from the academic world; and The French National Institute for Research in Computer Science and Control from government. Industrial laboratory members are Bell Labs, the Samsung Advanced Institute of Technology and Freescale Semiconductor. The project has received the nods of ascent from United States Secretary of Energy Steven Chu and the British, French, South Korean and Portuguese governments.

They are going to hold their first meeting in February. The group will chalk-out its 5-year action plan, responsibilities of the members and what role they will play in achieving the overall goal. Their focus will be the telecom field. They want to develop a reference network architecture and the key components in these five years.
Reaching out to make the world greener

Green Touch will depend on the Bell Labs lenovo ideapad y510 battery to do required research and provide necessary data to move ahead in achieving its 1,000-fold efficiency improvement in energy field. The laboratory had already accomplished the task of analyzing information and communication (ICT) networks technologies and architecture. After this Bell Labs then applied the Shannon-Hartley Theorem to its findings. In plain terms this theorem represents the maximum possible bandwidth available for broadcasting by adding the value of the signal encoding the data and the value of the noise, or interference.
The Green Touch Vision

The Green Touch Project seeks to accomplish the architecture, specifications and roadmap by 2015. Their aim is to reduce energy utilization of communications networks by a factor of 1,000 for every consumer from current levels. Gee Rittenhouse is the head of research at Alcatel-Lucent (NYSE: ALU) Bell Laboratories. According to him, “It is a really very aggressive schedule. We have five years to demonstrate these technologies.”

Bell Labs wants more and more organizations to join the Green Touch project. They are expecting to grow their tribe in numbers.

Rob Enderle is the principal analyst of the Enderle Group. He expresses his view, “Governments should like this trend a great deal, and I would expect they’ll have no problem getting on board. It may end up simply being a problem of keeping the folks that have to approve announcements down to a manageable level.”

The members of the project are not ruling out the competition also. Enderle envisages, “This may begin a new war, one on cost savings, which will drive a bigger pricing war” It might also launch a battle for dominance of the standards in this area as networking giants like Cisco (Nasdaq: CSCO) get involved. “Cisco is a big enough power in the segment to create standards pretty much on its own,” Enderle said.

But competition is not a bad thing at all. Consumer and companies HP laptop Battery both might be benefited at the end of the day. Enderle explains, “The result will benefit us all, regardless of whether this consortium or some other consortium or Cisco gets to it first.”

Solar Energy application

You may have seen the use of solar calculator - from the calculator does not need batteries, and sometimes these calculators do not even have the Close button. As long as there is sufficient light, the calculator seems to be able to go to work.

You may have seen larger solar panels - in an emergency traffic signs, public telephone booths, floats and even car parks and power indicator light on the battery to see this board. While these large-scale solar panel calculator is not as common, but they do exist, if you know the appropriate location, would be very easy to find them. Solar cells is also mounted on the satellite to its power supply.

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In the last 20 years, you may have heard the “solar revolution” that argument - talking about the day when we will all use free of charge from the solar energy received. This is a seductive promise: On a clear day, sunny days, solar radiation to the surface of the Earth about 1,000 watts of energy per square meter, if we can be all the energy collected can be easily for residential and Office to provide free electricity.

Solar Energy Phones

Solar energy phones are bound to become the must-have product in the future.? As the energy reduced daily, energy saving is an eternal task. The current cell phones are almost use lithium, Ni-MH are all energy consumption, environmental pollution and difficult to recover. I strongly appeal majority people who with social responsibilities pay attention to this industry’s development.?

The differentiation competition urge the cell phone emerge one after another, such as business cell phone laptop battery, information security cell phone, invisible cell phone. Recently, a new kind of light energy cell phone shocked this area and attractive enough eyes. Explanting solar energy technology to cell phone has enormous appliance value? What is the technology difficulty? And whether it is becomes to the new sea of cell phone industry or not?

Plenty of consumers’ cell phone always out of battery, so many people have to take along 2 or 3 batteries when goes out, even someone take along the charger daily. Solving cell phone standby problem is concerned by supplier all along, along with the come forth of cell phone multimedia function, standby problem disturb the Solar panel cell phone industry and consumers all alone. Everybody hope to explants convenient, energy saving, safe and reliable solar energy technology to cell phone, make it becomes to the long-term steady dynamic supporting of cell phone in 3G eras wireless life.?

Users obviously feel that the charge frequency reduced dramatically after they use the cell phone battery which utilizes the solar energy technology. The battery working life increased obviously which convenient to people phone conversation, media and entertainment aspects. Meanwhile, new energy, new material is the inevitable trend of cell phone development. Photo-electricity converts technology full of challenges.

Current domestic chips enterprises is in weakness stage in photo-electricity convert chips and low consumption chips technology, it is difficult to achieve mass production, hence, it is difficult to realize domestic purchasing in a short period. Besides, some domestic solar energy monocrystalline silicon wafer company supplied solar energy silicon wafer with low absorptivity universally, it will affect photo-electricity effect directly. Now many laptop battery manufacturer are using the solar panel to design the new battery accessories.

How to increase the solar panel use area under the circumstance of not affecting the cell phone cosmetic, optimize the battery internal management and enhance the photovoltaic conversion will be the further focus and difficulty in technology development of solar cell phone. Now the solar panel can be used in laptop battery.

China now has more than 400 million mobile phone users with huge potential consumer market. In addition, this technology expect to realize on mobile phone, but also can be expanded to MP3, DV, DC, Bluetooth and other consumer electronics products, the application value is very wide. With gradual growth of market and increased feedback of consumer satisfaction degree, solar energy cell phone will be like a webcam as an important standard device of cell phone and become as a guideline for consumers to choose cell phone. Experts predict that solar energy cell phone battery will be a bright point next year.

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