Sulfur Makes Safer, More Efficient Batteries

June 21, 2013 · Print This Article

Sulfur continues to offer promise in the energy storage realm. Low- cost lithium sulfur batteries were just a research topic a few years ago, and are now moving closer to practicality with new developments that could offer four times the energy storage of lithium-ion batteries.

Researchers at Oak Ridge National Laboratory have developed a technique that uses a solid electrolyte to produce a stable, low-cost, sulfur-based battery. “The

new ionically-conductive cathode enabled the ORNL battery to maintain a capacity of 1200 milliamp-hours (mAh) per gram after 300 charge-discharge cycles at 60 degrees Celsius. For comparison, a traditional lithium-ion battery cathode has an average capacity within 140-170 mAh/g. considering lithium-sulfur batteries deliver about half the voltage of lithium-ion versions, this eight-fold increase in capacity demonstrated in the

ORNL battery cathode translates into four times the gravimetric energy density of […]

[Source] Cynthia

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