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A huge battery has replaced Hawaii's last coal plant (www.canarymedia.com)

submitted 10 months ago by [email protected] to c/[email protected]

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A huge battery has replaced Hawaii's last coal plant::undefined

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[–] [email protected] 3 points 10 months ago (1 children)

This is awesome, but now we need better battery tech that doesn't rely on lithium and cobalt. Getting that up to this scale will be hard, though.

[–] [email protected] 11 points 10 months ago (1 children)

There's some promising headway with molten sodium-sulfur batteries. Not only are they at similar capacity as lithium, but their molten nature allows for the batteries to store energy long-term. The downside is a low cycle rate and the heating requirement. Another promising battery tech is sodium ion batteries, which can use iron as a cathode to output similar power and cycling as lithium

[–] [email protected] 4 points 10 months ago (2 children)

This application needs the opposite of that. They need lots and lots of cycles, easy to maintain, and density is not much of an issue.

[–] [email protected] 8 points 10 months ago

Sodium-sulfur batteries are designed for the role of grid storage.

[–] [email protected] 1 points 10 months ago

Iron-Air batteries will fill that role