373
Tesla owners are typically white men earning six figures
(www.businessinsider.com)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 03 Jul 2023
373 points (90.3% liked)
Technology
59118 readers
2991 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
Except those fundamentally limits are far higher. The fact is that hydrogen stores energy at 120 MJ/kg. Even at 5% weight efficiency, that's 6 MJ/kg. Or 1,666 Wh/kg. Far beyond any battery.
Your link is seriously lying. 8x is the gap between lead-acid and li-ion batteries. The claims are simply impossible. The author must be unknowingly comparing lead-acid battery powered cars to li-ion battery powered cars. I cannot see any other way his claim is true.
A lithium-air battery is literally a fuel cell. In fact, what did you think hydrogen fuel cells were this entire time?
Driving with something that power dense is incredibly dangerous. You're literally driving a bomb, dynamite is 4.6 MJ/kg
Gasoline is 46 MJ/kg
On one had we've got links to the department of energy and to Wikipedia. And just some hand waving on the other hand.
It's wrong because li-ion batteries at the time were way better than what it claims:
https://news.panasonic.com/global/press/en091218-2
This is from 2009, and already we reached 675 Wh/L. So there's no way the DoE link is true.