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by hcho 3680 days ago
As the article states a few times, weight is the main issue.
1 comments
fvjwiur 3680 days ago
what part of lithium-ion batteries is heavy ? Lithium is light
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ozzy6009 3679 days ago
The rest of them. Lithium is only the electrolyte. They also need cathode and anode materials.

Specific energy of gasoline: 46.4 MJ/kg

Specific energy of high end Li-ion batteries: 1.3 MJ/kg

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fvjwiur 3679 days ago
it amazes me that we've achieved so many hard things (going to the moon, to Mars, to Saturn, making computers) and yet batteries are so primitive that we can't even beat gasoline
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