Sulfide Coating Boosts Power, Longevity of Lithium Batteries

New research shows a nanoscale coating can dramatically extend the lifespan of lithium-ion batteries used in electric vehicles and consumer electronics.

Mar. 14, 2026 at 2:54am

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Researchers at the University of Arkansas have developed a novel sulfide coating for lithium-ion battery cathodes that can dramatically extend the lifespan and performance of the batteries. The coating, just two billionths of a meter thick, helps capture oxygen released during battery cycling, preventing degradation of the electrolyte and improving overall battery stability and safety.

Why it matters

Improving the lifespan and range of lithium-ion batteries is crucial for driving wider adoption of electric vehicles and portable electronics. This new coating technology could help address some of the key limitations of current lithium-ion battery designs, making them more reliable and appealing to consumers.

The details

The researchers applied a nanoscale coating of zirconium sulfide to prefabricated NMC811 battery cathodes using atomic layer deposition. This sulfide coating helps "scavenge" oxygen released during battery cycling, converting from a sulfide (ZrS2) to a sulfate (Zr(SO4)2). This stabilizes the battery interface, suppresses undesirable reactions, and maintains the structural integrity of the cathode material.

  • The research was published in March 2026 in the journal Small.

The players

Xiangbo "Henry" Meng

An associate professor in mechanical engineering at the University of Arkansas and the principal investigator on the project.

Kevin Velasquez

A Ph.D. student in the Meng Nano & Energy Lab and the first author on the research paper.

Argonne National Laboratory

A U.S. Department of Energy research laboratory that collaborated on testing the battery coatings.

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What they’re saying

“Meng first discovered sulfides are a novel class of coatings that could convert into sulfates in-situ in battery cells. He describes such coatings as "robust, clean and antioxidative protective layers on battery cathodes.”

— Xiangbo "Henry" Meng, Associate Professor, University of Arkansas (Mirage News)

What’s next

Several large tech companies have expressed interest in the results and will work with Argonne National Laboratory to test the coatings on different battery types.

The takeaway

This new sulfide coating technology represents a promising breakthrough in improving the performance and safety of lithium-ion batteries, which could accelerate the adoption of electric vehicles and portable electronics by addressing key limitations around battery lifespan and range.