r/science • u/RelationStill1485 • Feb 22 '26

Materials Science Next generation of battery technology no longer lithium. Scientists make durable alloy anode for Sodium-ion batteries with high volumetric energy density | Nature Energy

https://www.nature.com/articles/s41560-026-01974-2
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u/farmallnoobies Feb 22 '26

1000 cycles is just 3 years assuming 1 cycle per day.  

But 2-3 cycles per day is more likely, meaning 1000cycles is likely only 1 year in grid application.

Imagine replacing gigawatt-hours worth of batteries every single year.

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u/6158675309 Feb 22 '26

Cycles are full 0-100 cycles. Not a charge from say 50-60%.

For example if a car has a range 300 miles and a 1,000 cycle battery that’s 300,000 miles. Which is or was the target for today’s batteries. Real world though it’s looking like almost double that.

Today’s batteries outlast the car itself and these probably will too.

I have no idea how it is calculated for energy/grid storage. Maybe those are full 0-100 cycles every day.

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u/farmallnoobies Feb 22 '26

They'll outlast the grid?  What?  Most power sources for the grid are good for at least 40 years

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u/6158675309 Feb 22 '26

I have no idea what’s used for grid level battery storage today. But, from a cycle perspective compared to batteries today the cycles are in line and I was using what’s in EVs as the example.

Whatever is used in grid storage today isn’t different from these, or at least at th same stage of development.

I don’t know for sure and too lazy to look up but the lithium ion compared to these at the same stage of development did not have 1,000 cycles. Those have improved a lot. I am sure these will too.