BASF, NGK launch sodium-sulfur battery with less than 1% degradation rate

A set of technological improvements incorporated into the new product NAS MODEL L24 allows for lower maintenance costs compared to the earlier sodium sulfur battery type developed by the two manufacturers.

From pv magazine ESS News site

BASF Stationary Energy Storage, a subsidiary of chemical company BASF, and Japanese ceramics manufacturer NGK Insulators have launched a new version of their sodium-sulfur (NAS) batteries.

The containerized NAS Model L24 battery jointly developed by the partners, whose cooperation started in 2019, boasts a few technological improvements. Compared to the previously available battery type, the new NAS battery is characterized by a significantly lower degradation rate of less than 1% per year thanks to reduced corrosion in battery cells.

Another technical achievement is an improved thermal management system in battery modules, which enables a longer continuous discharge. For instance, in the case of discharging at 200 kW-dc per NAS Model L24 unit, the continuous discharging duration is six hours.

The new technology elements have been incorporated into the field-proven battery design. Namely, NAS batteries were implemented practically for the first time in the world by NGK and since then installed at over 250 locations worldwide, with a total output of over 720 MW and a total capacity of around 5 GWh installed.

Like the earlier version, the new concept complies with the latest safety standards for energy storage installations, such as UL1973 and UL9540A.

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This post appeared first on PV Magazine.

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