Engineering contact curved interface with high-electronic-state active sites for high-performance potassium-ion batteries

What is it about?

High-capacity and long-life carbonaceous materials are crucial for the development of cost-effective and energy-dense potassium-ion batteries. Based on first-principle calculations, we reveal that constructing contact curved interfaces can enhance the electronic density of states around the Fermi level of carbonaceous materials and facilitate the adsorption of alkali metal ions, contributing to the realization of high capacity and highly stable carbonaceous anodes in potassium-ion batteries.

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Photo by Roberto Sorin on Unsplash

Photo by Roberto Sorin on Unsplash

Why is it important?

Interface engineering plays a vital role in various scientific domains, including batteries and catalysis. Our theoretical and experimental findings confirm that the construction of contact curved interfaces can enhance the electronic density of states near the Fermi level of carbonaceous materials and promote the adsorption of alkali metal ions. By implementing this idea in potassium-ion batteries, we have successfully demonstrated the production of carbonaceous anodes with high capacity, excellent cyclability, and fast charging/discharging capabilities. This innovative design holds broad implications, offering advanced solutions in materials science, chemistry, and environmental studies.

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