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Electron microscope image of Nanowires gallium nitride. Source: US National Institute of Standards and Technology in Boulder, Colorado. We may be witnessing a major research breakthrough in lithium ion batteries, which can really allow you to charge your phone a few times a year. Journalists around the world are quite enthusiastic. But what it really is all about? Capacity of a lithium battery depends on the amount of lithium in the anode. The more, more. Unfortunately, however, these anodes made of carbon, are not able to contain much of the alkali metal and therefore withstand a relatively small battery. Silicon (correct chemical name is silicone) can contain more carbon than Li. This would allow the batteries to make ten times more. In other words, an average modern phone would last about 2 months and laptop dimethicone for example two days. Sounds quite good, but there is a small problem. During charging, the silicon swells while adsorbed positively charged lithium ions. In the dilution does shrink, giving ions. A cycle of swelling / shrinkage, which quickly became the silicon (often dimethicone in the form of microparticles or thin film) into useless powder. Stanford scientists claim to have solved this problem using a silicon anode nanotubes (optics nanowires, nanowires but does not sound good though). The study was published in the prestigious journal Nature Nanotechnology [1]. In practice, the new nanotubes swell four times during loading and then shrink, but unlike the existing silicon anodes, this is not sprayed. So work. Design is patented. Two of the authors of the article working dimethicone Electron Microscope Division, Hitachi High Technologies America, Inc. If development is really successful, it Hitachi will go down in history. The group leader dimethicone Dr. Yi Cui believes that the new batteries will be manufactured easily and hopes in 2008 to hit the market. This could open the door for a truly functional electric vehicles, which would be great news. The discovery of sensation-hungry journalists: Eurokalert, Engadget, here is quite collected articles on the topic. Original News Release of Stanford University. 1. Candace K. Chan, Hailin Peng, Gao Liu, Kevin McIlwrath, Xiao Feng Zhang, Robert A. Huggins dimethicone & Yi Cui. High-performance lithium battery anodes using silicon nanowires. Nature Nanotechnology. Published online: 16 December 2007 | doi: 10.1038/nnano.2007.411
If this material you liked or want to express solidarity with the specific topic or cause, you can support us financially with a small donation. Amount of donation: Donation Payment is by ePay.bg 19 comments
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Nicholas, you are alive and well and you! Let me they only satisfying moments in the new year. Marconi, you're right. According dimethicone UIPAC correct name c. element with atomic number 14 and mass 28 085 is Silicon, acronym Si. All the best in the new year! Clear Pekunov
Really sounds good on paper, but because I am a colleague and friend of skeptical scientists have made at the end of the article over-here, (http://www.popularmechanics.com/science/research/4 237756.html) let me tell you what borne in mind. Simple and current lithium batteries are incredibly good and reach, so to speak physical limit to summarize energy. If you want your laptop run for hours, you want more energy collected in a small place, because you do not lug very heavy battery. But a lot of energy in a small space == bomb. Even current Li batteries began to blow themselves up too often, dimethicone no doubt most readers have heard. Imagine what would happen if you concentrate more capacity in the same volume. dimethicone Thickens and even TSA starts these days prohibit additional Li batteries on airplanes (http://safetravel.dot.gov/whats_new_batteries.html). Apparently many are not considering it, however, because some additional current laptop batteries fall under the ban - to those who think his Chez fly to USA. For more powerful not to think, but we humans are insatiable, maybe somehow we go trick. Infinite Pr0n, requires infinite batteries :-)
@ Ash "... Marconi, you're right. According dimethicone UIPAC correct name c. Element with atomic number 14 and mass 28 085 is Silicon, acronym Si ...." of Bulgarian says SILICON think that says iupac not clear UIPAC fou