“During previous tests, the batteries scarcely crossed the 200-cycle mark. By means of a special combination of anode and cathode material, we have now managed to extend the life span of lithium-sulfur button cells to 1400 cycles,”
The experts at IWS measure the capacity of a battery in watt hours per kilogram whpk. Over the long term, they expect lithium-sulfur batteries to reach an energy density of up to 600 whpk. For comparison: the maximum energy density of the lithium-ion batteries currently in use is a mere 250 whpk. “In the medium term, figures around the 500 whpk mark are more realistic. In practical terms, this means you can drive twice as far with the same battery weight,” says Althues. This of course implies that significantly lighter battery models are possible …
via A longer life for lithium-sulfur batteries :: ElectronicsOnline.
paulspiece.com 