Exploring why an accidental discovery may have unlocked the holy grail in battery research: an energy dense, long lasting, and safe battery. Lithium sulfur batteries may be the holy grail of energy storage. Besides fueling electric vehicles (EVs) adoption, they could turbocharge the integration of renewable energy into our electric grid. However, a technical fault has been holding back their economic feasibility…until now. Could this lithium sulfur discovery from Drexel University make it the future of battery storage?
[wikipedia.org] – Lithium–sulfur battery
The big deal is that Lithium-Sulfur has potentially 2-3 times the energy density compared to Lithium-Ion. The problem with Li-S is that it is not stable, the charging process ruins the battery. But the scientists working on the topic accidentally discovered a way around the problem, resulting in:
After 4,000 charge-discharge cycles over the course of a year, which is equivalent to 10 years of regular use, the sulfur cathode remained stable and had not degraded. As predicted, the battery’s capacity was more than three-fold that of a Li-ion battery.
It also means that sulfur replaces the problematic cobalt.
[finance.yahoo.com] – Scientists accidentally stumble on ‘holy grail’ of batteries for electric vehicles
[greencarcongress.com] – Drexel team develops stable Li-S battery with carbonate electrolyte
900 miles per charge is coming.
The death of the satellite? This Airbus aircraft managed to stay airborne for 11 days, without any propulsion, other than solar and lightweight lithium-sulfur batteries, and it could have stayed in the air indefinitely.