Description

NGK Analyzer NAS Battery

NGK Analyzer NAS Battery is a major leap forward in the ability to provide a stable supply of renewable energy. A product of NGK’s proprietary advanced ceramic technologies, the NAS battery was the world’s first commercialized battery system capable of megawatt-level electric power storage. The NAS battery system boasts an array of superior features, including large capacity, high energy density, and long service life, thus enabling a high output of electric power for long periods of time.

During Discharge:

• Molten sodium donates electrons to the external circuit at the anode.
• The resulting ions Na+ migrate to the cathode through the beta-alumina solid electrolyte that separates the two liquid electrodes and acts as a superionic conductor.
• The volume of liquid at the anode therefore decreases.
• Arriving at the cathode, Na+ ions combine with molten sulfur which reacts with the electrons coming from the external circuit, forming sodium polysulfide Na2Sx.
• The volume of liquid at the cathode therefore increases.