BASF, NGK release new NaS battery

BASF, NGK release new NaS battery

BASF, NGK release new NaS battery 150 150 Batteries International

June 14, 2024: Sodium sulfur batteries, a mostly forgotten chemistry pioneered in the 1980s and 1990s, received a boost with the announcement on June 10 of a new advanced container-type, megawatt scale, NAS battery.

BASF will begin deliveries of NAS model L24 in the second half of 2024.

 The new product has been jointly developed by NGK Insulators, a Japanese ceramic manufacturer, and BASF Stationary Energy Storage. The new model and has a low degradation rate of less than 1% per year due to a reduced corrosion in battery cells.

There is also an improved thermal management system in battery modules, which enables a longer continuous discharge. “These improvements allow projects to be implemented using fewer NAS battery containers over project running time, and with lower maintenance costs,” says BASF.

A sodium sulphur battery is a high-temperature battery. It operates at 300°C and uses a solid electrolyte. One electrode is molten sodium and the other is molten sulphur, and it is the reaction between these two that is the basis for the cell reaction.

NAS batteries are long-life, high-energy stationary storage batteries. They can provide power for six hours or longer. In more than 20 years they have been deployed at over 250 locations worldwide, with a total output of almost 700MW/5GWh.

“With the NAS model L24 our customers will be able to reduce their initial investment in battery storage systems as well as save on long-term project costs — approx. 20% over project lifetime,” says Frank Prechtl, managing director of BASF Stationary Energy Storage.

BASF and NGK have worked together since 2019. NGK has been deploying NaS battery units for over 20 years, mostly in Japan.

In the early 2010s General Electric invested some $200 million in making a molten salt battery branded as Durathon. Its, then, CEO Jeff Immelt, believed that it would become a billion dollar business. However, the cost of nickel powder proved uncommercial and in 2015 GE closed its battery manufacturing factory in New York.