Cathode Coating Reduces Degradation of Solid-State Lithium Metal Batteries

Solid-state lithium metal batteries are a promising technology for the future of energy storage. They have the potential to store more energy than traditional lithium-ion batteries and can be made safer by replacing the liquid electrolyte with a solid-state electrolyte. However, one of the major challenges with solid-state lithium metal batteries is the degradation of the cathode material over time.

Researchers at the University of Michigan have developed a solution to this problem by coating the cathode material with a thin layer of lithium fluoride. This coating helps to prevent the degradation of the cathode material by reducing the formation of a solid-electrolyte interphase (SEI) layer.

The SEI layer is formed when the electrolyte reacts with the cathode material, which can lead to the degradation of the cathode and a decrease in battery performance over time. The lithium fluoride coating helps to prevent the formation of the SEI layer by acting as a barrier between the cathode material and the electrolyte.

The researchers tested the coated cathode material in a solid-state lithium metal battery and found that it had a longer cycle life and better performance compared to an uncoated cathode material. The coated cathode material also showed improved stability at high temperatures.

This breakthrough in cathode coating technology could lead to the development of more efficient and longer-lasting solid-state lithium metal batteries, which could have a significant impact on the future of energy storage.

https://www.lifetechnology.com/blogs/life-technology-technology-news/cathode-coating-reduces-degradation-of-solid-state-lithium-metal-batteries

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