Sodium-Sulfur Battery

2Na + 3S → Na₂S₃

Descripción general

Sodium-sulfur batteries operate at 300–350°C with molten sodium anode, molten sulfur cathode, and a solid beta-alumina ceramic electrolyte that conducts Na⁺ ions. Cell voltage is about 2.0 V with energy density of 150–240 Wh/kg. Both sodium and sulfur are abundant and cheap, making NaS attractive for grid storage.

Participantes

Rol	Sustancia	Coeficiente	Estado
Reactivo	Sodium Na	2	(l)
Reactivo	Sulfur S	3	(l)

Ejemplo cotidiano

Japan uses NaS batteries for grid-scale energy storage, with over 200 MW of installed capacity stabilizing the power grid.

Importancia industrial

Tecnología de almacenamiento de energía a gran escala para redes eléctricas y fuentes de energía renovable intermitente.

Propiedades

Tipo: Electrochemical
Reversible: Sí
Energía: Exotérmico
ΔH: -420,0 kJ/mol

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Frequently Asked Questions

What is the equation for Sodium-Sulfur Battery?

The balanced equation is: 2Na + 3S → Na₂S₃.

What type of reaction is Sodium-Sulfur Battery?

Sodium-Sulfur Battery is a electrochemical reaction. It is reversible under certain conditions.

Is Sodium-Sulfur Battery exothermic or endothermic?

Sodium-Sulfur Battery is exothermic (releases energy). The enthalpy change (ΔH) is -420.0 kJ/mol.