Found a way to extend the life of lithium-sulfur batteries




Found a way to extend the life of lithium-sulfur batteries


Despite the fact that since the opening of silicon technology began to develop by leaps and bounds, one key aspect from the rest is still developing well, very sluggish. We are talking about the sources of supply for most of these technologies. But scientists at the Dresden Institute of Technology of materials and radiation technology to them. Fraunhofer claim to have developed a new long-running lithium-sulfur battery, which has so much potential that will exceed lithium-ion batteries, including from the point of view of their value.

One of the main reasons that more powerful and less expensive to manufacture lithium-sulfur batteries inferior to lithium-ion, is that they offer a significantly lower rate of life. However, researchers from Dresden hurry to share that developed the new design, which will ultimately help to seven times as many recharge cycles of lithium-sulfur batteries.

In previous tests such batteries could hardly make it to the target of 200 recharge cycles – says Dr. Holger Altyus, head of research group Chemical Surface Technology.

Through a combination of special anode and cathode materials, we were able to significantly extend the life of lithium-sulfur batteries up to 1,400 recharge cycles.

It happened because commonly used lithium metal was replaced by an anode of a silicon-carbon compound. As a result – improved stability: a key factor in the performance and life cycle of the battery. As the cathode, there are used particles of sulfur. This significantly reduces the production costs compared with the commonly used cobalt.

Looking ahead, the scientists say that it plans to increase the energy density per unit mass of lithium-sulfur batteries up to 600 watt-hours per kilogram (Wh / kg), which is greater than that of the best lithium-ion battery (400 Wh / kg) and almost twice larger than that of conventional electronics used in everyday.

In addition to the potential use of such batteries in electric cars, the researchers believe that lithium-sulfur batteries are excellent candidates for use in smartphones and generally most other portable devices.

Lithium-sulfur batteries may even be able to apply to aircraft operating on electricity. However, prior to this progress, we still have a long way – sums Altyus.

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