나트륨-황 전지

2Na + 3S → Na2S3

개요

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.

참여 물질

역할 물질 계수 상태
반응물 나트륨 Na 2 (l)
반응물 S 3 (l)

일상 속 예시

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

산업적 중요성

NaS 전지는 그리드 규모 에너지 저장(MW 규모), 피크 전력 제어, 재생에너지 통합에 배치됩니다.

자주 묻는 질문

What is the equation for 나트륨-황 전지?
The balanced equation is: 2Na + 3S → Na₂S₃.
What type of reaction is 나트륨-황 전지?
나트륨-황 전지 is a 전기화학 reaction. It is reversible under certain conditions.
Is 나트륨-황 전지 exothermic or endothermic?
나트륨-황 전지 is exothermic (releases energy). The enthalpy change (ΔH) is -420.0 kJ/mol.