A new era of cheap fuel cells
A new era of cheap fuel cells
American University found that the new low carbon fuel cell catalyst to create a new era
Fuel cells has always been to "environmental savior" for people to praise, because it will be clean and efficient hydrogen and other types of fuel into electricity. However, the development of fuel cell technology must be used because of the expensive catalyst - platinum and stagnant.
Now developed a carbon nanotube-based (carbon nanotube) in the new fuel cell, this fuel cell using platinum as a catalyst than the battery cheaper, seamless and efficient.
University of Dayton, Ohio (University of Dayton) of the Dai Liming (Liming Dai) research team led by Professor found several bundles of hydrogen mixed nanotubes can serve as a catalyst to help place inside the fuel cell oxygen-related chemical reactions.
According to "New Scientist" magazine, said the discovery in the development of fuel cells has taken an important step on the path. Carbon fuel cell catalyst is not generating heat by burning fuel for the turbine-powered, but the chemical energy directly into current.
Push hydrogen through the battery anode, hydrogen molecules split into its component electrons and protons; electronic flow from the battery to provide power, while the proton left behind in the cell to spread; Finally, the electrons and protons are negative in the battery join with oxygen to form water molecules.
Pure energy?
The case in the absence of catalyst, the above chemical reaction very slowly. Therefore, the need for battery anode formed by a chemical catalyst to speed up the rate of chemical reaction. Traditional approach, only platinum can make the chemical reaction very soon.
Professor Dai Liming research team found that when they conduct a study of carbon nanotubes as a catalyst, the results surprised them. Professor Dai Liming said: "Although platinum has long been considered the best catalyst for fuel cells, but these (carbon) catalyst results even better than platinum."
Catalyst for his team generated electricity with carbon nanotubes is the use of platinum 4 times the power. In addition, the platinum or gold nanoparticle aggregates with carbon monoxide pollution, they will fail, and carbon catalysts does not.
Cost-cutting
Professor Dai Liming that carbon nanotubes has been able to become an effective catalyst for fuel cells is due to the presence of hydrogen. Their results show that each hydrogen atom will be attracted from the adjacent carbon atoms in the electron, the electron from the carbon atoms through the electronic supplement the fuel cell cathode. This means that when an oxygen molecule with the fuel cell anode met to already have enough e-react with them.
Although carbon nanotubes are still relatively expensive, but their prices are getting lower and lower - and Professor Dai Liming said that the effect of carbon nanotubes can also be mixed hydrogen from other types of carbon to achieve. He said: "Now that we have found one of the chemical theory, there is no need to use some of the nanotubes."
Illinois USA (Illinois) A Gongna National Laboratory (Argonne National Laboratory USA), Liu Biodroga (Di-Jia Liu) previously identified a weak catalytic nanotubes. She said: "This is an interesting progress. (The study found that carbon nanotubes as a catalyst) for the development of fuel cells are expensive clear this obstacle."
Now determine whether the next car or phone powered by nanotubes is still too early, she said: "The role of carbon nanotubes have been the first real test Caixing operating environment."
Other Electronics News:
⇒⇒⇒ lenovo thinkpad t400s battery
⇒⇒⇒ toshiba pa3399u-1bas battery
⇒⇒⇒ toshiba pa3399u-1brs battery
⇒⇒⇒ toshiba pa3399u-2bas battery
26.10.2010. u 05:28 | 0 Komentara | Print | # | ^
U.S. institutions thin film solar cell market forecast lowered
U.S. institutions thin film solar cell market forecast lowered
The United States recently released a market research firm forecasts show that thin film solar cells by 2015 the global market of 140 million U.S. dollars. And the agency in July of this year's forecast of 200 billion U.S. dollars.
U.S. market research firm NanoMarkets thin film solar cells listed in the market's anxiety factors include: the decline in oil prices, the use of solar energy as an alternative to the overall weaker demand; shortage of silicon raw materials as the solution to silicon than crystalline silicon solar cells using the less thin-film solar cells as a selling point of the growth has slowed down; the operating environment, resulting solar cell manufacturers to reduce R & D investment. To this end, the company's forecast for 2009 market growth to slow in 2010, again entered a rapid growth path until 2011.
However, in the long run, lightweight, low-cost thin film solar cell market will continue to grow. "The current situation, the cost of thin film battery can be greatly reduced, than the average silicon, polycrystalline silicon solar cell two-thirds. Therefore, this thin film photovoltaic cells power plant built in the future will be more competitive and easier to browse the Internet generation. "Jiangsu Province, Professor Wei Qidong, secretary general of Energy Research, told reporters.
Wuhan University, developed a low-cost nickel-based fuel cells
"The United States National Academy of Sciences," published an article saying that, from Wuhan University research team created a membrane with alkaline fuel cell, reducing the precious metal materials required for this battery is expected to reduce costs. Fuel cell uses fuel to produce electricity. Currently, almost all use the acid fuel cell membrane, but that means the battery components to be associated with platinum and other precious metals or the rare metal.
Chemistry and Molecular Sciences, Wuhan University School of Chuang Lin and colleagues said in the article, they successfully used silver and nickel to produce a fuel cell membrane, allowing the fuel cell using nickel-platinum instead of expensive and scarce, thereby reducing costs.
The article said: "Although the battery power output is not high, but the researchers think that this is the first step in low-cost fuel cells."
Other Electronics News:
⇒⇒⇒ toshiba pa3285u-2brs battery
⇒⇒⇒ toshiba pa3285u-3brs battery
⇒⇒⇒ sony alpha a350 battery grip
19.10.2010. u 04:57 | 0 Komentara | Print | # | ^
Zero-emission fuel cell vehicles
Zero-emission fuel cell vehicles
Although the Olympic Games and Paralympic Games have ended some time, but the success of the Olympic Games give us a deep impression, the event can be said to give the country the power to organize, in every respect to do our best, in the reception of the vehicles too. During the Olympics, there is such a team: they are from the 20 Passat Passat formed body of the vehicle the words "fuel cell car" from the shuttle at various venues and stadiums, the successful completion of tasks, covering a distance of thousands of km, but did not add a drop of gasoline, which is today's hero - Passat Passat fuel cell cars.
"Green Olympics, Scientific Olympics" is the slogan of the Beijing Olympic Games, Beijing 2008 Olympic Games as a vehicle partner, Volkswagen vehicles not only sponsor for the Beijing 2008 Olympic Games and Paralympic Games provides excellent transport security services, but also to a series of new energy vehicles provide energy-saving environmental protection, green travel services. These services are the Olympic Games in green new energy models from Shanghai Volkswagen Passat 20 Passat composition of the domestic fuel cell car has the largest fleet of fuel cell demonstration runs of the longest running record in a row, the longest total mileage record. Volkswagen in the spirit of "Green Olympics, Scientific Olympics", but also demonstrated its power in the new energy and new technology achievements. Is the hydrogen absorption of water row
Reduction are put in today in front of the world's major car manufacturers a major issue. While the manufacturers to explore new ways and means of energy is different, but their vision is the same - using renewable energy, clean energy as the future direction of development. So, who can take the lead in the new master of renewable energy power technologies, anyone can become the master of the automotive market.
At Volkswagen's powertrain technology and fuel development strategy, we see medium-term development of fuel still in liquid form, but not limited to oil, such as sun oil, synthetic oil, etc., are man-made synthetic fuels, to adapt to the current engine systems; but in the future will still be electricity, hydrogen as the main direction of development, can be said that hydrogen is currently recognized by the automotive industry to achieve zero pollution, clean energy. Hydrogen is currently recognized by the automotive industry to achieve zero pollution, clean energy. Volkswagen as the world's most powerful vehicle technology vendors, research and application of hydrogen has made certain achievements.
Fuel cell vehicle fuel cell power system consists of engine, fuel tank (hydrogen bottle), electric motors, power batteries and other components, the use of fuel cell power generation as the main energy source, through the motor drive the vehicle forward. Fuel cell power generation and routine chemical energy in different, more similar to gasoline and diesel engines. Its fuel (mainly hydrogen) and oxidizer (oxygen or air) is not stored in the battery, but outside the tanks stored in the battery. When the battery power, the need to continuously fed to the battery inside the hydrogen fuel and oxidizer, emissions of only pure water. Therefore, the fuel cell is a suitable vehicle, environmentally friendly hydrogen power generation devices. Its biggest feature is the reaction does not involve combustion, so the energy conversion efficiency from "Carnot cycle" restriction, the energy conversion efficiency up to 80%, the actual efficiency is 2-3 times of ordinary internal combustion engines.
"Green" service marathon
August 2007, the Shanghai Office for approval of new energy vehicles to promote the establishment of a "fuel cell car tech Olympics" special, planned trial 20 Passat Passat-based platform that integrates a new generation of fuel cell power system technology platform, the fuel cell car, provide transportation services for the Beijing Olympics. By the SAIC, Shanghai Volkswagen and the burning power more than ten units composed of joint R & D team, depth Passat Passat for fuel cell vehicle safety, reliability and comfort in terms of optimization, and the establishment of power system control, electrical safety, hydrogen safety, nine special technology development research group. Since July 5, 2008 began, 20 Passat Passat fuel cell car after another arrived in Beijing after commissioning, transport services into the work of the Beijing Olympic Games.
During the Olympic Games and Paralympic Games, this 20 Passat Passat fuel cell cars in 8 major Olympic venues to run around the provision of traffic management services; and, as a referee special vehicle for the Olympic Games and Paralympic Games marathon competitions security services. To ensure that the fuel cell car running smoothly during the Olympic Games, Shanghai Volkswagen, the burning power of about 100 people came together to form a model operation team to provide comprehensive technical support and operational security.
Fuel cell vehicles and ordinary vehicles, the difference between
Center console features increased, the data can be run real-time detection
We have seen in the center console of a style more common DVD car navigation, but the built-in functions which are far more than that, pressing the corresponding button, we can see the current vehicles in the state of charge and discharge, are to Comparison of the animation image of the way has been reflected; If you need more detailed test data, just press the toggle button to be able to check the drive motor, battery and fuel cell operating conditions, from the voltage, temperature, performance, and other data to understand the operational status of the vehicle.
If you encounter a problem, error code board computer will be displayed on the screen in a timely manner to facilitate the testing service staff. Dashboard display power, no speed
In the mass range of vehicles dashboard, usually on the left of the big table is a tachometer, and fuel cell vehicles in the replacement of vehicles has become one shows the current power of the instruments, instrument pointers in the idle state the basic point to zero-scale When the pointer speed when driving positive, he said that the issue of the actual drive motor power; and when the brakes when the pointer will drop to the negative energy that are now recovered.
Slightly less power, noise suppression is still needed
PASSAT fuel cells in Canada, after a full fuel can travel 235 km or more, to accelerate from 0-100 km time of 15 seconds, top speed 140 km / hour, for a gasoline version of the Passat This is simply for pediatrics, but for hydrogen fuel cell vehicles as an energy source for such data has basically met the needs of everyday driving. In the course of driving, the vehicle will be issued a similar sound like the plane took off, mainly from the intake side of the noise, because the fuel cell fuel cell outside, the more the faster the air will need to react, how to This part of the noise suppression is also the need to solve a problem.
Supply in different ways, a hydrogen supply the energy needs of 3-4 minutes where the vehicle is specially designed hydrogen refueling station, hydrogen refueling station at the time of entering here, we found that the requirements more stringent than the gas station, the door installed devices to eliminate static electricity , mobile phones for security reasons I have also been temporarily closed up, taking pictures is strictly controlled in the hydrogenation outside the region.
Vehicles hydrogen stations, by professional operators in the exhaust pipe of the ground with anti-static, and then connected through a special pipeline to the vehicle tank, the fuel fill process takes 3-4 minutes, a hydrogen fuel buses will have to spend 15 minutes or so.
In addition to the different characteristics of the vehicle itself, vehicle parking garage is also rather special, in the garage are installed on the roof of hydrogen sensors to detect vehicle fuel leaks and ensure the safety of the surrounding environment.
Other Electronics News:
⇒⇒⇒ lenovo battery
⇒⇒⇒ laptop battery
⇒⇒⇒ toshiba pa3285u-1brs battery
⇒⇒⇒ toshiba pa3285u-2bas battery
⇒⇒⇒ lenovo thinkpad t500 battery
11.10.2010. u 05:25 | 0 Komentara | Print | # | ^
Spain new fuel cell li-ion conducting materials
Spain new fuel cell li-ion conducting materials
Complutense University of Madrid (UniversidadComplutensedeMadrid) the researchers designed a high ionic conductivity of the material that may greatly facilitate the development of hydrogen and fuel cells. The study published in the renowned scientific journal "Science "on.
The team used insulation material - strontium titanate (Strontiumtitanate) and yttria stabilized zirconia (Yttria-stabilizedzirconia) of synthetic materials for the fuel cells ions in the conductive material. Crystal structure of two different materials combine to produce the ion flow channel.
Automotive batteries and feed plates are short-term capital Chaozuo
Today's total turnover of the two cities was 53.29 billion yuan and 5.68 billion increase over the previous trading day, about 3.62 billion net outflow of funds. The recent worldwide stock market crash, the inevitable impact of China's stock market, despite central bank cut interest rates last night and a two-pronged policy of lowering deposit rates, but the market's confidence in the recovery would take time, real estate, coal, forestry, animal husbandry and fisheries, non-ferrous metals funds continue to flow, car batteries and feed plates are hot money Chaozuo, but not the number of levels, China Petroleum and Yao City continues to support the market, the Shanghai index down 0.84%, to close at 2074.6 points. Remain operational advice yesterday, "the Shanghai index to return to the line of pressure within the (tomorrow at 2140 points), showing that the trend is still down, can only be short-term wet storage operation, the recent flow of funds frequently, not sure, it is best not move. "wait and see tomorrow is still appropriate.
Electric Bicycle replace the battery
Live in the district of Fuzhou Gijón Chen, is to cook at home so his wife back. What think, wait until the fast 1:00, but he did not figure his wife. "Electric vehicles will not be another 'break', right?" He is a bad premonition heart suddenly surfaced, he took the phone wave, and sure enough, end of the line came the anxious voice of his wife: "electric vehicle battery is broken."
Chen said that his wife bought the electric car more than a year, due to frequent charging and long-running, electric vehicle batteries from time to time on the "anchor." Previous occasions, the battery bad, not in the vicinity of the unit, that is just close to home, Mr. Chen also help cart, you can not so lucky this time, broke down to just at the unit and home.
At that time, his wife anxious, Chen Chong shouted, "how to do", said the road do not want to lose the car directly. At this time, Mr. Chen thought of the sea are 968,111 recently launched a new "electric car battery replacement" service, which said that as long as the people of a phone, give your location, the sea would have rushed to the maintenance of professional convenience.
He is called the Sea are 968,111, the newspaper contact his wife and electric cars broke down locations. After that, he waited for half an hour, my wife came back. Huo Da's wife to see the original, and now gas is slow, and Chen heart also smiling: "sea are convenience shop, really is a great solution of the problem I had."
Other Electronics News:
⇒⇒⇒ lenovo batteries
⇒⇒⇒ laptop batteries
⇒⇒⇒ toshiba pa3191u-4brs battery
⇒⇒⇒ toshiba pa3191u-5bas battery
⇒⇒⇒ toshiba pa3191u-5brs battery
06.10.2010. u 05:15 | 1 Komentara | Print | # | ^
