Argonne: Lithium-Air battery 1200 wh/kg, 1000 cycles

Re:Argonne: Lithium-Air battery 1200 wh/kg, 1000 cycles by credit_guy on Thursday February 23, 2023 @02:33PM (#34915269)

Maybe one catch is that the weight of the discharged battery is much higher than the weight of the fully charged one. So, as you travel, the battery becomes heavier and heavier

> This new solid enables chemical reactions that produce lithium oxide (Li2O) on discharge.

Lithium has an atomic mass of 7 and Oxygen of 16. The reaction starts with only Lithium (2 atoms = 14 mass) and ends with Li2O, with a mass of 30.

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Re:Argonne: Lithium-Air battery 1200 wh/kg, 1000 cycles by jackmott42 on Thursday February 23, 2023 @02:42PM (#34915424)

you could start out 4 times lighter than a modern battery pack and end up only 2 times lighter when discharged..

that would be fine!

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Re:Argonne: Lithium-Air battery 1200 wh/kg, 1000 cycles by Robotbeat on Thursday February 23, 2023 @02:55PM (#34915574)

Most of the weight of the battery isn’t lithium, so the effect isn’t as bad as you might think.

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Re:Argonne: Lithium-Air battery 1200 wh/kg, 1000 cycles by tinus_hn on Thursday February 23, 2023 @03:55PM (#34916335)

> Maybe one catch is that the weight of the discharged battery is much higher than the weight of the fully charged one.

That would add an interesting dynamic during a race!

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Re:Argonne: Lithium-Air battery 1200 wh/kg, 1000 cycles by frankus on Thursday February 23, 2023 @04:46PM (#34916987)

This could make things interesting for aircraft, where currently they get considerably lighter as they reach the end of their flight.

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