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2010年10月11日星期一

Application of Nanotechnology to Enhance the Storage Ability of Lithium-ion Battery Greatly

Lithium-ion battery has annual sales of 27 billion U.S. dollars; lithium-ion battery is no doubt the market leader in rechargeable batteries. However, people always want to do even better. Now, scientists report that they use nano technology can greatly enhance the lithium-ion battery energy storage capacity, or maintain the existing level of energy storage conditions greatly reduce the battery weight. The new results can bring smaller notebook computers, longer trips such as a large number of electric vehicle applications.dell vostro 1310 battery 

In traditional rechargeable batteries, with positively charged lithium-ion stored in carbon-based anode, with the battery discharge will flow to the cathode. This technique has the advantage of carbon remain after repeated charge-discharge light and durable, but the disadvantage is six carbon atoms can support a lithium ion. Recently, researchers try to make crystal silicon anode, each silicon atom can support about four lithium atoms, in theory, would enhance the efficiency of energy storage.
In 2007, Stanford University materials scientist Yi Cui’s team is led to do so. They use crystal silicon Nan wire anode production, this material is very thin, so the losses caused by inflation and less flexible. This battery can store 10 times the conventional lithium-ion battery charge level. But the problem is crystal material after repeated charge-discharge damage, and eventually breaks, the battery will be damaged.
dell xps m1330 battery 

Therefore, in a recent study, Yi Cui’s team covering the outer layer of amorphous silicon with carbon nano-line replacing the fragile silicon Nan wires. The inherent stability of the carbon core made of amorphous silicon with a full staff to make lithium-ion. The result of this new carbon – silicon mix anode has a 6-fold in the traditional full charge capacity of carbon anode, the early tests, they also compared the performance of all-silicon anode is more stable. The results were published in an upcoming issue of the “Nano Letters” on. Using the results, the battery company will eventually be able to produce lighter, battery capacity, which is the key to the future manufacture of electric vehicles. Cui Yi pointed out, the battery company to keep the battery in under the weight increase of 50% of storage capacity.
dell vostro 1510 battery 

University of Texas, material chemists, battery experts, Arumugam Manthiram speaks very highly of this achievement. But he also said that because of this new material must be with the battery in the other components together and confirmed that its cheap, safe, fast charge, so that the results will improve in the future, the extent to which the battery is not yet clear. “This is a very challenging task.” Manthiram said, “That is why such a slow progress in battery technology reasons.”
dell xps m1210 battery 

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