APPLICATIONS OF TECHNOLOGY:
Lithium Sulfur rechargeable batteries for
- Electric vehicles
- Consumer electronic devices
- Enables reliable lithium-sulfur (Li-S) batteries
- Extends Li-S battery lifetime
- Economic, readily-available material
Researchers at Berkeley Lab led by Gao Liu have found that carrageenan, a seaweed derivative, acts as a stabilizer in lithium-sulfur (Li-S) batteries. The researchers determined that the naturally-occurring material works as well as a synthetic polymer to buffer the polysulfide shuttle effect typical of Li-S batteries and, instead, maintain the integrity of the sulfur electrode to improve electrochemical performance.
For details, see the publication linked here and below.
Lithium-sulfur batteries have the potential to offer higher energy capacity than lithium-ion batteries at a lower cost. However, sulfur cathodes in Li-S batteries suffer from poor cyclability and low conductivity due to the polysulfide shuttling effect. The Berkeley Lab technology applies an advanced material approach to help Li-S batteries achieve their commercial potential.
DEVELOPMENT STAGE: Proven principle. Sample materials have been tested.
FOR MORE INFORMATION:
STATUS: Published PCT application PCT/US2017/015990 (publication WO2017136409). Available for licensing or collaborative research.
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