Lithium Ion Battery

The first lithium battery based in sulfur nanoparticles

The American physicists created an accumulator prototype on the basis of the sulfur nanoparticles,which possess the bigger capacity and wear resistance in comparison with usual lithium – ion batteries. For a long time the main advantage of lithium-ion batteries were considered the convenience of operation, fast speed of charging and a discharge and rather small weight. On the other hand, they aren’t deprived serious shortcomings — such batteries quickly lose the capacity, are extremely sensitive to temperature and can blow up at an overheat. The physicists paid attention to the sulfur nanoparticles as a power supplier for a long time. The group of physicists sulfurunder the direction of And Tsui  from Stanford University liquidated one of these problems — fast decrease in capacity at frequent charges of the battery, having learned to use sulfur nanoparticles as a basis for the cathode, a positive pole of the accumulator. The physicists could neutralize these problems, having assembled the cathode from microscopic hollow balls from the sulfur, covered with a polymeric cover. According to researchers, it will allow to create the super capacity accumulators, which practically aren’t losing the capacity at cycles of a charge and discharge. So, for one cycle such battery loses only 0,046% from its general capacity, which allows to use them as basic accumulators for electric cars and their hybrid cousins.

source:www.nanonewsnet.ru