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Researchers and technology companies are studying how to ultimately replace lithium-ion batteries with lithium-sulfur (Li-S) batteries, as this new chemical reaction theoretically allows more energy to be loaded into a single battery - a measure known as energy density in battery development. The capacity brought about by this improvement is about 5-10 times that of lithium-ion batteries, which is equivalent to a longer operating time between this and the next charge.

The problem is that after completing the initial few charges, the Li-S battery cannot continue to maintain its superior capacity. It has been proved that sulfur, as a key component to improve energy density, will migrate from the electrode in the form of an intermediate product of "Polysulfide", resulting in the loss of this key component and performance degradation during recharging.

For many years, scientists have been trying to stabilize the reaction of these Polysulfide inside the Li-S battery, but most of them will encounter other complex situations, such as adding weight to the battery, expensive materials or adding several complex processing steps.

But now a new method has been born. A report entitled "Titanium(II) oxide (TiO) nanofibers as Polysulfide fixative in Li-S batteries" was published by researchers from Drexls Engineering School in the latest issue of Applied Materials and Interfaces, a journal of the American Chemical Society: evidence of Lewis acid base interaction shows that it can fix Polysulfide in place and maintain the impressive endurance of this battery, Simultaneously reducing overall weight and the time required to produce them.

We have created independent porous Titanium(II) oxide nanofiber felt as the cathode main material of lithium sulfur battery, Dr. VibhaKalra said. He is an assistant professor and an important research author at the School of Engineering. "This is a major development, because we found that our Titanium(II) oxide sulfur cathode has high conductivity and can combine Polysulfide through strong chemical interaction, which means that it can enhance the specific capacity of the battery while maintaining its impressive performance. We can also prove that this can completely eliminate the adhesive and collector on the cathode side, which account for 30-50% of the electrode weight - our method only takes a few seconds A sulfur cathode can be formed. The current standard may take nearly half a day

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