Mar 18

In Endurance Batteries

Security At Its Best

How safe are the new hybrid and electric cars? If the energy is no risk? Keep the batteries, the temperature fluctuations in the car from? They explode if they are damaged? To examine these questions and more are to be subject Researchers at the Fraunhofer Institute for Chemical Technology ICT in Pfinztal near Karlsruhe batteries of different hardness tests.

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What can withstand loads of batteries?

Check that the batteries can withstand mechanical, thermal and electrical stress. What happens during a crash? As the batteries to respond to rapid changes in temperature or vibration? Puffed up the batteries when they are overloaded? Burns energy when it is lit?

“To determine the risk and the damage that we observe the behavior of the battery during the entire abuse testing under a variety of aspects. Both the temperatures and the rising and escaping gases for the purpose of an accurate risk analysis measured and evaluated, “says Dr. Jens Tübke from the Fraunhofer Institute for Chemical Technology ICT. The researchers are developing security concepts derived from them.

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Hybrid Car

New Materials

In addition to the “ill-tests”, the researchers will also investigate whether there are suitable, for example, certain cells and batteries used in hybrid vehicles. Only proceed if the systems in these studies no risk, large batteries can be installed in a vehicle.

Also contributing to the safety of batteries provide the characterization of the used battery components and their material properties. The development of new battery materials is one of the current work of the “Applied Electrochemistry” of ICT and the “electrochemical energy storage and conversion” of the Fraunhofer Institute for Silicate Research ISC. The focus is on the synthesis and characterization of electrodes and the development of polymer electrolytes and ionic liquids for lithium-ion and lithium polymer batteries.

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Mar 17

New long battery life for mobile devices

Tin-sulfur-lithium ion battery as an alternative to conventional lithium batteries

The vulnerability of virtually all mobile devices today is much too short battery life. According to diligently research also focuses on improved batteries, which deliver significantly more energy, more durable and thereby to be reliable. Italian researchers now have a new variant of a lithium-ion batteries developed that could meet these criteria.

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Laptop in action

The dilemma: cell phones, laptops, smartphones and PDAs are getting smaller, but also increases its energy needs. The batteries that come with no more: Treating it is not always the absolute good care, he breathes his life soon completely. Likewise, research on improved batteries, which deliver significantly more power, longer life and thereby to be reliable. Theoretically, this would lithium-sulfur battery energy supplier of choice because they - based on the mass supply - much more energy than conventional lithium ion batteries. The practical application, however, suffers from the fact that the electrodes dissolve gradually, resulting in loss of capacity. In addition, lithium metal can be deposited in the form of branches, causing short circuits.

That is the reason why commercial contained “Lithium” batteries, no metallic lithium electrodes, but also record a material, the lithium ions, and can unlock it, sometimes graphite. Such a properly-called lithium ion battery cell generates the source voltage only by a shift of lithium ions and provides correspondingly less energy.

Without metallic lithium battery

Bruno Scrosati, and Yusef Hassoun from the University of Rome have now developed a promising approach for a new variant of a lithium ion battery. The researchers combine the advantages of both types of long-life battery, in order to get along well storable, reliable, easily manufacturable, high-capacity battery. Your lithiummetallfreien new kind of cell uses a cathode (negative electrode) from a carbon-lithium sulfide composite.

To minimize the dissolution of electrode components to replace the scientists and the organic electrolyte solution through a lithiumionenhaltige trapped in a gel-polymer membrane liquid. The polymer protects the saturated with lithium sulfide liquid from the electrodes. The anode (positive electrode), and Hassoun Scrosati chose nanoscopic Zinnpartikel that are enclosed in a protective carbon matrix.

Also suitable as a vehicle drive

The electrochemical process is as follows: At the cathode is lithium sulfide into elemental sulfur and lithium ion gespalten.Dabei electrons are released. The lithium ions migrate through the electrolyte membrane to the anode, where they take up electrons and become neutral lithium atoms. The latter are bound by the tin oxide nanoparticles of the anode in the form of an alloy.

The process is reversible, so the battery can be recharged repeatedly. With a specific energy of about 1,100 watt-hours per Kilgramm the new cell exceeds all previous lithiummetallfreien batteries. With this high energy density of the new battery could also establish itself as a power source of choice for electric vehicles.

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Mar 15

Tank and cell phone battery is empty: Pregnant freeze in car

Estenfeld - Empty tank, empty cell phone battery, empty wallet: A pregnant woman from Hesse had on the trip to her parents in three Hoechberg near Wuerzburg pitch. See what’s on it:

1870500222-auto-kaelte9A pregnant woman is lying in her car in the cold.

It was not until she walked out of fuel and she remained in her car on the highway 19 are between Estenfeld and Würzburg. Refueling would not have been possible anyway, because the woman had no money. Shortly after she asked her friend via cell phone for help, was then also the phone battery is empty.

Because the pregnant woman nor her partner could not say at the last second that she is about ten miles from Wurzburg, gave the police after a call of a man on a quest. Two hours later, officials found the motorist shivering in her car. The police announced on Sunday Würzburg, lent the forces of the pregnant women a few bucks for a few gallons of gasoline. After the incident on Friday evening, the woman was finally able to still visit their parents.

Pitch is probably not the right word, rather, inability to master the little things of everyday life. As a father of two teenagers and a teacher I can see that many young people are less and less “get to the series, but demand for more and more understanding. You will find it increasingly normal to miss important appointments, forget important documents that do not meet accepted tasks. Irresponsibility is the rule, while it falls out of fashion, such tendencies call a spade! Anyone who does that came out as old-fashioned, as old-fashioned! Hey Age, stay loose!

I think that the general provision of the prosperity drugs, such as “mobile phone”, “navigation systems”, etc. .. define as a lot has to do with it: you need not make any more precise understandings ( “I am now at the XY place where art thou?”) you must not organize / ( “I stand here in front of the shelf, honey, look but please if there is time yogurt in the fridge “)
Well, when the battery from the phone once it is empty, because you like someone who goes solely by the Navi and he drops out or he finds it no longer an ;-)
Blessed is he who throws home BEFORE it moves off vielliecht still take a look at the route, especially if he does not know … or just take a look at the fuel gauge throws and has even a sense of how far is the distance around.

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Mar 09

In this paper the researchers set out to create simulations that examined the impact of hydration and temperature on the positively charged hydrated protons and water molecules. Understanding these dynamics could lead to polymer membranes that are better engineered for transporting protons while controlling electrode flooding by the water molecules. One of the goals is to develop PEM membranes that need little water.

Using classical molecular dynamics simulations, the research team investigated the impact of four levels of hydration and two different temperatures. The scientists calculated structural properties such as radial distribution functions, coordination numbers, and dynamical properties such as diffusion coefficients of hydronium ions (H3O+) and water molecules.

The results of their calculations showed that protons and water molecules are bound to sulfonate groups in the membrane at low hydration levels. As the hydration level increases, the water molecules become free and form a network along which protons can hop (Figure 2). This leads to a dramatic increase in proton conductivity. Temperature was found to have a significant effect on the absolute value of the diffusion coefficients for both water and hydronium ions. These findings have helped in interpreting experimental results that indicate a major structural change taking place in the membrane with increasing hydration.

Dynamics of Water and Hydronium in Nafion Nanopores Examined by

In the second paper, the authors used all-atom molecular dynamics simulations to systematically examine eight different levels of membrane hydration to closely mirror two experimental studies. They also simulated bulk water to develop a novel criterion to identify free water in Nafion. This enabled them to quantify the fraction of free, weakly bound, and bound water molecules in the membrane as a function of hydration.

The researchers found that at low hydration levels, strong binding of hydronium ions to sulfonate groups prevents transport of protons. Multiple sulfonate groups surrounding the hydronium ions in bridging configurations hinder the hydration of the hydronium and the structural diffusion of protons (Figure 3). As the hydration level increases, the water molecules mediate the interaction between hydronium ions and sulfonate groups, moving them farther apart. These results provide atomic-level insights into structural changes observed in Nafion by infrared spectroscopy.

Mar 02

psp110

Sony batteries Pandora programs ineffective structural changes

Some people overseas have found that the Sony PSP-110 battery (the old version of the original PSP battery), is now writing brushes can use Pandora battery procedures. Amazon recently departed from battery manufacturing process was purchased Magic Battery (Pandora’s process IE) an error when the system will be soon. Still, there is EEPROM can not work.

Old and new batteries before the battery is the difference between China Khan (the root), from Amazon for a battery of Japanese origins of this piece is purchased.

In fact, it is not surprising that one’s worth, according to Sony’s common usage, battery new battery after a break is expected to introduce to resist was cracked. Finally, using magic PSP battery system, regardless of what kind of an older version can be easily shield. In addition, the market has spread so that the shield (the last year, sales of the original battery PSP batteries can randomly be used in making the magic battery).

Mar 01

solar-equipment-c

Photovoltaic cells, photovoltaic conversion efficiency of the industry trend and always full line of production capacity is to improve and to reduce cost of production direction. Therefore, we developed tools for the major piece of domestic solar cell technology is focused on the following aspects: level of automation and standing alone would improve the capacity, batch load increasing amount of film; device applications of automated tools for manual intervention To reduce the production capacity of improving the entire line, with the users to use new technology for detection, photovoltaic cells and further improve energy conversion efficiency, and development of appropriate size, thin wafer process technology and equipment, to save silicon and reduce costs. At the same time improve the cost of home appliances, with a good price and service benefits geographical solar cell manufacturers to play, at the end device, one for success to develop products and related products to increase market share stimulate growth. Geographic, foreign companies and domestic companies market customers, both pre-sales technical exchanges is consistent with almost tailor products for users, but also conducive to the maintenance service after the sales commission and long-term supply of spare parts, service , product-oriented to user-oriented, locally user to establish an office in the user quickly to customers high quality service and building long term relationships and close ally need answers.

Beijing Sevenstar Electronics Co., Ltd. ( “Seven Star Electronics as specified”) leading solar cell devices in the field of solar cell equipment supplier has achieved excellent results. The company’s main products, solar cells and wet etching and cleaning equipment (suede automated system equipment, automatic wafer cleaning equipment, cleaning tools, including Automated PSG device wipe and quartz goods), equipment, chemical vapor deposition equipment and high temperature diffusion furnace sintering household appliances very competitive market, more domestic production line is collected. Solar equipment cleanliness, high reliability and large capacity cells designed solely for large-scale solar cell production to meet industry characteristics; 8 inch vertical diffusion / oxidation system, better cost-effective, Tube - type of PECVD process results to is the world’s advanced level, but also favored by foreign customers, the product is exported. Achievements in the semiconductor industry has come from companies Save more than 40 years, the spread of equipment to oxidation, chemical etching equipment, wafer cleaning tool velocity concrete technology, has a broad customer base.

Relatively low cost solar cell devices, including foreign firms, poor, and their technical difficulty is much smaller than IC devices, the company successfully entered the field of solar cells is relatively low threshold. We hope that these countries and enterprises in special funds to provide product research and development to strengthen its efforts on support, better prospects for success will be a product. Development of photovoltaic industry specific electronic equipment industry in China, will bring new market opportunities and growth.

Jan 24

Alone inside a button to replace watch battery, even earning an average of 1,500 yuan per month, which may cause not very confident, but it is indeed a true story.

5 years ago, from Chaohu, Anhui Province, a 20-year-old girl, in my district where placed in front of a button to replace watch batteries stalls next to also shore up a billboard that reads, “Please be assured of : The cabinet sold by certain licensing button batteries, purchased from approved sources to authentic, and each pill is approved purchase cost 5 yuan, plus a variety of fees to be paid, so the sale price set at 10 yuan. Welcome to presence of the cabinet to replace the battery, from the date of replacement, if the battery less than two years, I unconditionally to 10 times the original price to be compensation. “inducing effect of such advertising, this rapidly booming business pitch up. At the same time, everyone’s commitment to this girl is also very appreciated.

Well, this girl is how to fulfill its authoritative, it? Recently, I witnessed the unusual move of her: She watches every customer to replace a button battery, it will pocket out of a China brand pencil case back to the inner walls of the table to sign the name of his own mini - When will the day as well as a few minutes, and then tighten the table cover, calibration time Didao customer hands, and smiled and said: “You watch where have my mark, under normal circumstances, this grain button battery, if less than 2 year, please come to me, I will compensate your loss, believe me. “When the customer took delivery to 10 dollars later, she re-invoicing.

“Proof of the pudding, something a long time see the people.” Sure enough, when the customers come back the next time when the replacement button batteries, unscrew a case back look at the dates, are more than two years, and some have even gone almost 3 years.

By contrast, some booths and even some stores to customers the same button to replace the battery, even though the price is relatively cheaper, but it can not be “launched” to two years, its authentic or not, find it difficult to distinguish. Eat a cutting wisdom, so more and more customers to vote in order to praise the girl’s attention, have let the girl inside the button to replace watch batteries. As a result, their business several times higher than others naturally. It is learned that since four years ago, this girl more than 10 pieces a day to replace watch battery button to remove a variety of costs, guaranteed profits, 50 yuan is not a problem.

Said is now difficult to do business, put it bluntly, it’s difficult to be in what state of mind and know-how to do that in good faith under the premise of how to use one’s opponent to tap the business, the details of the door, this might be the girl given the greatest inspiration.