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New sodium ion battery stores twice the energy and desalinates seawater (www.sciencedaily.com)
submitted 7 months ago by to c/technology@lemmy.world
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[–] -3 points 7 months ago (2 children)

All that data says is batteries got cheaper so they are putting more of them into cars. Also 100 to 300 wh/kg is in labs. No explanation why it went from 175 to 100 Wh/kg 08-10.

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  • [–] 1 point 7 months ago

    We've had 3 major changes in battery chemistry in the last 45 years. Energy density, lifespan, cost, and dangerous materials have all generally improved. We also have 2 new battery technologies in the process of becoming generally commercially available. Also, batteries went from 500 mAh batteries about the size of your smartphone to 3000 mAh as a minor component of that same smartphone, about an order of magnitude in energy density.

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