For increased safety, lifetime, performance and temperature stability of li-ion batteries and lead-acid batteries, Evonik provides customized silica like AEROXIDE® AEROSIL® and SIPERNAT®.

Extremely powerful: Silica and metal oxides from Evonik for batteries

Products often need batteries to run. And Evonik gives batteries their power. Our high-quality pure silica and metal oxides increase the safety, lifetime and performance of batteries.

From smartphones to electric vehicles, lithium-ion batteries are used in numerous applications. Their biggest advantage is their high energy density, combined with a low level of self-discharge and long lifetime.
Lithium-ion batteries benefit from our metal oxides in multiple ways. The thin ceramic coating on top of separators consists of fumed aluminum oxide (AEROXIDE® Alu 65) and it enhances the battery safety significantly. The battery’s performance and lifetime is increased by dry coating the cathode active materials with fumed aluminum oxide (AEROXIDE® Alu 130) or fumed titanium dioxide (AEROXIDE® TiO2 P 25). Our metal oxides can be used as additives in new electrolyte formulations to control the viscosity and finally to immobilize the liquid electrolyte.

Precipitated silica from Evonik (e.g. SIPERNAT® 325 AP) is used as the main component of PE separators for lead-acid batteries in cars. Fumed silica is used in the production of gel electrolytes in stationary lead batteries to increase the lifetime of the battery (AEROSIL® 200 V).

Improve your batteries with the high-performance oxides from Evonik. We are leaders when it comes to the particle design of metal oxides as additives for lithium-ion batteries and in the development of new silica as components in lead-acid batteries. This enables us to deliver the exact formulation our customers require for their product.

Benefits of silica and metal oxides from Evonik for batteries

  • Enhanced safety, longer lifetime and improved performance for lithium-ion batteries
  • Efficient pore generators in PE separators for lead-acid batteries
  • Longer lifetime of stationary lead-acid batteries through effective electrolyte gelling


Our AERODISP® and VP Disp. dispersions enable preparation of ultra-thin, homogenous separator coating increasing safety performance of the cells.

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