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Evonik launches new silicon-carbon anode material

Evonik has introduced the silicon-carbon composite material Siridion Black as a new anode material for lithium-ion batteries, claiming that it increases energy density, and improves fast-charging capability and energy efficiency.

“Until now, graphite has been used as an anode material in lithium-ion batteries, but batteries with a higher capacity need new materials that also allow faster charging,” said Evonik spokesperson Björn Borup. “As an additive, our solution can be quickly integrated into existing anode materials and production processes, and it combines well with other battery materials.”

The powder, which is produced by gas-phase synthesis, consists of isolated unsintered spherical particles that are a few hundred nanometers in size. Within the amorphous particles, the carbon concentration increases from the inside out to ensure stability. “In addition, due to the higher carbon content on the surface, the particles are better protected against oxidation and easier to process,” added Evonik’s Julia Lyubina.

Source: Evonik

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