All-solid lithium-sulfur battery stores four times the energy of lithium-ionsSubmitted by Bob-45 on Thu, 06/13/2013 - 10:40
By Dario Borghino
June 7, 2013
Researchers at the Oak Ridge National Laboratory (ORNL) have come up with a promising design for a lithium-sulfur rechargeable battery that is considerably cheaper and energy-dense than standard lithium-ions. Using a solid electrolyte rather than a liquid one, the battery is also testing much safer and more durable than previous designs.
Lithium-sulfur batteries are seen by some as the successors of lithium-ions because they are extremely light (they are often used for solar-powered flight), they can reach an impressive energy density, and they are cheaper to produce.
But the technology isn't quite mature yet, and as it turns out, the two major limitations with Li-S batteries have to do with the electrolyte. An electrolyte is a substance that, when mixed with a solvent, releases ions, making it electrically conductive. In batteries, electrolytes transport charge between the two electrodes, converting chemical energy into electrical energy.