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
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.
성질
- 유형
- 전기화학
- 가역 반응
- 예
- 에너지
- 발열
- ΔH
- -420.0 kJ/mol
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.