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A comment on A long-lasting, stable solid-state lithium battery. Parent comment

Re:A long-lasting, stable solid-state lithium battery by pfdietz on Monday May 17, 2021 @08:19PM (#27189935)
If you mix sodium and potassium, the eutectic melts at -12.6 C.

Lithium-ammonia eutectic ("metallic ammonia") freezes at 90K, the boiling point of liquid oxygen.

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