Sodium-Sulfur Battery

2Na + 3S → Na2S3

概要

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.

参加者

役割 物質 係数 状態
反応物 Sodium Na 2 (l)
反応物 Sulfur S 3 (l)

日常の例

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

産業上の重要性

NaS電池はMW規模の系統用エネルギー貯蔵、ピークシェービング、再生可能エネルギーの統合に使用される。

特性

タイプ
Electrochemical
可逆的
はい
エネルギー
発熱性
ΔH
-420.0 kJ/mol

関連する反応

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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.