HF (Hydrofluoric Acid) Scavenging Glass

HF (Hydrofluoric Acid) Scavenging Glass Frit

During battery production, even small amounts of residual moisture can lead to extremely corrosive hydrofluoric acid forming in battery cells because of violent reactions between fluorine and water. SCHOTT HF Scavenging Glass cuts out the reaction, protecting a variety of components and preventing short-circuiting.

Thin silver lithium ion battery
Rechargeable lithium ion battery for a smartphone


In lithium-ion batteries, HF scavenging glass is a reliable additive for passivating HF. It can be added directly to the anode or cathode. For batteries with high-energy density, a ceramic-coated separator is used to increase safety. These materials can be partially replaced by the glass particles. In addition, the glass has the advantage of being less abrasive than processing machines.

Two blue capacitors


HF scavenging glass also provides reliable protection against HF-induced corrosion and degradation in supercapacitors and electric double-layer capacitors (EDLC).

Close up of a scientist holding a petri dish filled with glass powder in a laboratory

Other applications

In other applications, the material can intercept harmful HF and bind reliably.

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