Exploring the Environmental Sustainability of Primary Al–Air Batteries for Long‐Term Energy Storage Applications

日本語

本研究は、アルミニウム空気電池（AAB）の長期エネルギー貯蔵（LTES）への適用を想定し、ライフサイクル評価を実施。再生可能エネルギー由来のアルミニウムと持続可能な材料調達により、地球温暖化係数（GWP）と淡水富栄養化で優位性を示す一方、資源消費と生態系影響とのトレードオフを明らかにした。低炭素製錬、素材循環性、物流最適化がAABの持続可能性向上に不可欠と結論付ける。

English

This study conducts a life cycle assessment of primary aluminum-air batteries (AAB) for long-term energy storage (LTES). Under favorable conditions (renewable aluminum and sustainable materials), AAB shows advantages in global warming potential and freshwater eutrophication, but reveals trade-offs with resource depletion and ecosystem impacts. The findings emphasize the need for low-carbon smelting, material circularity, and optimized logistics to make AAB a sustainable alternative to hydrogen-based LTES.

In the global GX context

This paper contributes to the global energy transition debate by quantitatively comparing emerging battery technologies with hydrogen-based storage, highlighting life-cycle trade-offs that are critical for technology assessment and policy support in decarbonizing energy systems.