Lithium-sulfur battery has taken an important step towards commercial viability
Apr 29,2020.
Lithium-sulfur battery has taken an important step towards commercial viability
Lithium-sulfur batteries are hailed as tomorrow's stars in battery technology. It is expected that a single charge will significantly increase the service life of mobile phones, electric vehicles and other products, and it is more environmentally friendly than current lithium-ion batteries. However, the life of lithium-sulfur batteries is not as long as that of lithium-ion batteries, and will deteriorate over time.
A team of researchers at the Corkrel School of Engineering at the University of Texas at Austin has found a way to stabilize the most challenging parts of lithium-sulfur batteries, bringing the technology closer to commercial viability. The research results recently published by the research team in the "Joule" magazine show that an artificial layer containing tellurium is fabricated in situ inside the battery and covered with lithium metal, which can extend its life by four times.
"The layer formed on the lithium surface allows it to operate without damaging the electrolyte and increases battery life." Said Amruth Bhargav, who and his graduate student Sanjay · Sanjay Nanda co-authored this paper.
Solving the instability of this part of the battery is the key to extending its service life and promoting its application. Manselam said that lithium-sulfur batteries are currently the most suitable for devices that require light batteries. They can run for a long time on a single charge without requiring a large number of charging cycles, such as drones. But they have the potential to play an important role in expanding the use of electric vehicles and increasing the use of renewable energy.
Mantheram said that the charging capacity of the positive and negative electrodes of lithium-sulfur batteries is 10 times that of today's lithium-ion batteries, which means that a single charge can provide more sustainable use. Sulphur is widely present as a by-product of the oil and gas industry, making the production cost of batteries low. Sulfur is also more environmentally friendly than the metal oxide materials used in lithium-ion batteries.
Reported by Jack Yan
AOTELEC BATTERY EQUIPMENT COMPANY
2020-4-29
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