Solid-state lithium-sulfur batteries: Neutrons unveil sluggish charge transport

Solid-state lithium-sulfur batteries have been touted as a promising alternative to traditional lithium-ion batteries due to their higher energy density and lower cost. However, their commercialization has been hindered by the sluggish charge transport within the battery, which leads to poor performance and short cycle life.

Now, a team of researchers from the Oak Ridge National Laboratory and the University of Michigan have used neutron scattering to gain new insights into the charge transport mechanisms in solid-state lithium-sulfur batteries.

The researchers found that the charge transport in these batteries is hindered by the formation of a solid electrolyte interphase (SEI) layer on the surface of the lithium anode. This layer acts as a barrier to the flow of lithium ions, slowing down the charging process and reducing the battery's performance.

However, the researchers also discovered that the addition of a small amount of lithium nitrate to the electrolyte can improve the charge transport by promoting the formation of a more stable SEI layer. This leads to faster charging and longer cycle life.

These findings could pave the way for the development of more efficient and reliable solid-state lithium-sulfur batteries, which could have a significant impact on the future of energy storage.

Overall, the use of neutron scattering has proven to be a valuable tool for understanding the complex charge transport mechanisms in solid-state lithium-sulfur batteries, and could lead to further advancements in this promising technology.

https://www.lifetechnology.com/blogs/life-technology-technology-news/solid-state-lithium-sulfur-batteries-neutrons-unveil-sluggish-charge-transport

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