Science Overload! Learn About The Science Behind Batteries

Submitted by: boredhuman 2 weeks ago in Science


How long will you last before you die of boredom? 
The big explosions sprinkled in everywhere will likely fail to keep your interest
Will you last till the global warming reference at 12:20
Will you last till the moon landing reference at 15:07? 
There are 9 comments:
Male 1,029
I will say, that although his conclusion is most likely correct his reasoning has some rather large holes in it.
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Male 485
punko Explain, Dr. punko.
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Male 1,029
boredhuman 1)  I printed and read the research paper.  The paper and the hype are two vastly different things.
2) The explosion caused by the reaction of pure sodium in water (due to the metal releasing hydrogen gas from the water) is meaningless.  By the way, toss pure lithium in water, you'll get the same explosion, although not quite as vigorous.  Drop table salt in water, that stuff is 50% sodium atoms !  hardly explosions.  Simply having sodium doesn't necessarily mean explosive when in contact with water.
3) He makes references (a lot) to the laws of thermodynamics.  He is exceptionally loose with this arguments on how those laws apply to the situation.
4) he explains how liquid fuels and gasses explode.  While battery fires have happened, we don't see buildings leveled with exploding batteries.  While it is relatively easy to get a battery to catch on fire, it is entirely a different kettle of fish to get a large volume of battery to explode.  Compare that to a car trunkload of ANFO (fertilizer and diesel fuel) which will easily make a very large hole in the face of a government building.

This battery tech will not as good as the "take away" from the paper, as what was being tested, while repeatable, carried opportunities for measurement error.  I have only glanced at a review of the work by other scientists in the field, and they said that it was an incremental improvement in charge capacity, and an improvement in recharge rate and lifetime cycles.  I don't know if they commented on its safety.

what did encourage me, was that they may be able to swap sodium for lithium.  the cost savings from that (although with a performance loss) looked promising.

I love questioning hype with real science! we need more.

If only political science was actually science.

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Male 485
punko Thanks!
No doubt dm2754 would be making fun of you for arguing with a SCIENTIST.
Arguing within a scientific community is a good sign, and it happens all the time.

1) I don't think thunderf00t read the primary source: the 6 page "Alternative strategy for a safe rechargeable battery." He was just responding to the overblown hype of the 'perfect battery' video. A better scientist would have responded to the paper... looks like he was committing a straw-man fallacy.

2) His larger point was that both sodium and lithium batteries could burn without oxygen. And "sodium may be worse" than lithium. Yes, his explosive demonstration has little (nothing) to do with the battery. 

3) He's being loose with estimates. Is his general reasoning sound, though? Where is he making gross errors?

4) Your argument seems to be that it is easier/cheaper to make explosives using fuels and gasses than batteries. It would follow that the rate of accidental battery explosions would be lower than fuel/gas. How big a battery would you need to have to be equivalent to truckload of ANFO? How expensive would that battery be?
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Female 5
The information you share is very useful. It is closely related to my work and has helped me grow. Thank you!
lucky patcher
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Male 40,560
Duh.
That was obvious, I wonder he bothered to make the video.
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Male 4,390
Gerry1of1 even though he's a scientist it's funny how many people still want to argue with him.
Sure it's a no-brainer for most of us but then there's...... Other less educated people
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Male 485
dm2754 Wait, are you saying you're not supposed to argue with scientists?
If you disagree with a scientist, you get branded a heretic and ridiculed. You get called "less educated" by PC community and idiot/retarded by the rest. 5cats was right: science is turning into a religion!!! 

- Can you tell whether I'm being sarcastic?
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Male 40,560
dm2754 yeah. it's important to get an edumacation
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