for more reliable lithium-ion batteries

The lithium-ion battery is the best rechargeable energy source that is currently available due to its long life and the quantity of energy that it generates.
These batteries are composed of two electrodes – a cathode based on lithium and a graphite anode, an organic liquid electrolyte and a separator.
The separators of lithium-ion batteries are microporous films made of polyolefins (polymers) positioned between the cathode and the anode of the batteries. These separators prevent contact between the electrodes, which would cause a short circuit and the battery to overheat or even explode.
They nevertheless allow the passage of lithium ions from one electrode to the other, thus generating current.

Alteo’s SEPAL range was developed as a coating for the separators of lithium-ion batteries, to make them more reliable.

With particular attention paid to the quality and purity of aluminas, SEPAL products ensure:
• improvement of the thermal stability of separators (> 130-150°C)
• resistance to the penetration of metallic dendrites, thus avoiding short circuits

Discover all of our products in the brochure.

This brochure is available in different languages. Contact our team to know more.


Happy Lunar Year 2023!

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Happy Lunar Year 2023! All our teams wish you the best for this Lunar New Year. We are very honoured to count you among our partners…
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Lithium-ion batteries – SEPALALTEO

Alteo / W-Scope sign an agreement to build the largest separator production site in Europe

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Alteo and W-Scope, world leader in the production of separators for electric vehicle batteries, have signed an agreement to launch…
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The products supplied by Alteo are in compliance with REACH regulation (EC) No. 1907/2006 and its amendments.
Our products are registered and Alteo received from ECHA (European Chemicals Agency) the REACH registration numbers as below:

Alteo product range Substance nameCAS NumberREACH registration number
Hydrated aluminasAluminium hydroxide21645-51-201-2119529246-39-0000
Calcined AluminasAluminium oxide1344-28-101-2119529248-35-0197

The Products manufactured by Alteo do not contain REACH SVHC* (Substance of Very High Concern) materials in excess of 0.1% by weight.
The Material Safety Data Sheets (MSDS) are conform to REACH regulation:

Calcined aluminas
Spray dried powder
Dried hydrateMoist hydrate

Please contact our commercial team for a specific language version.