Samsung SDI Secures U.S. Patent for Composite Anode Material with Enhanced Lifespan and Energy Density

Published: Apr 1, 2026 17:40

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According to the U.S. Patent and Trademark Office on the 30th, Samsung SDI has filed for and is in the process of securing a patent for a composite anode material.

The patent, titled “Composite anode active material and anode and lithium secondary battery including the same,” was originally filed on July 10, 2020, and was published on March 24. It covers an anode material combining graphite with an average particle size (D50) of approximately 18μm or larger, graphite of around 10μm or larger, and a silicon-carbon composite.

The technology focuses on enhancing structural stability and extending battery lifespan by densely filling the electrode with graphite particles of different sizes.

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