The Nanotectology Promises to Multiply for 10 the Autonomy of the Batteries

You are a great problem that the law of Moore is not germane in the land of the batteries. If the number of transistors in the microprocessors, or the memory increases in a lineal way every few months, the technologies of the batteries go to too dilatory step.

In the University of Stanford, the professor Yi Cui and your team have developed a technology that can raise the autonomy of the batteries of mobile telephones, portable, video cameras, etc. an autonomy 10 times superior to the current one. Basically it is about modifying the anode of the rechargeable batteries of io-lithium.

The increase of the capacity is possible thanks to a new anode type that don't use graphite, but silicon nano-filaments. In the traditional batteries of io-lithium, the quantity of imposition, in lithium form that can store the graphite node is limited; that that in turn limits the operational lifetime of the battery. The silicon anode has the theoretical biggest charge capacity, but they expand and they contract when being loaded and to be downloaded, what affect to the performance of the battery.

The team of Stanford has paid this problem by means of a new silicon anode in that the lithium is stored in a tangle of nano-filaments. As you happen with those of silicon, these filaments "fill out" up to four times when absorven the lithium, but contrary to the first they don't fracture.

Although in the field of sensors and ubiquitous devices of reduced size don't usually use this type of batteries, swapping size for autonomy results could be procured more than interesting in the field of the ubiquitous computation.