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Impressive Capacity and Extended Lifespan – Scientists Have Invented Recyclable

Started by cryptodan , Yesterday, 12:10 AM

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#1 cryptodan

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Posted Yesterday, 12:10 AM

https://scitechdaily.com/impressive-capacity-and-extended-lifespan-scientists-have-invented-recyclable-water-batteries-that-wont-catch-fire/

Something I can get behind

The teams water battery is closing the gap with lithium-ion technology in terms of energy density, with the aim of using as little space per unit of power as possible. We recently made a magnesium-ion water battery that has an energy density of 75 watt-hours per kilogram (Wh kg-1) up to 30% that of the latest Tesla car batteries.

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#2 JohnnyBeeGood

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Posted Yesterday, 10:21 AM

Sounds interesting.

Something to follow.

It's not a new idea, though.

https://uh.edu/news-events/stories/2022-news-articles/december-2022/12122022-aqueous-batteries.php

Charge density is the hold up for auto/truck applications.

I haven't seen any mention of hydrogen gas generation. Electrolysis could be an issue.

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#3 Dominique1

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Posted Yesterday, 05:11 PM

Magnesium is also dangerous when ignited. :flamethrower: And in water, the combustion generates hydrogen.

Edited by Dominique1, Yesterday, 05:12 PM.

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#4 cryptodan

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Posted Yesterday, 05:20 PM

Did you read the article?

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#5 Dominique1

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Posted Yesterday, 05:59 PM

Not sure if the question is directed at me, but which point do you want to bring up, Dan? :scratchhead:

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#6 cryptodan

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Posted Yesterday, 06:00 PM

"Water Batteries That Wont Catch Fire"

In the title

Edited by cryptodan, Yesterday, 06:01 PM.

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#7 Dominique1

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Posted Yesterday, 06:11 PM

While I agree that these batteries are much more stable than lithium ones, they are certainly not without danger. Driving a car puts these batteries in real-life danger. Murphy's Law will make sure that these batteries also catch fire. And if the fire run out of oxygen, it will use nitrogen in the air instead. The side effect of that (when mixed with water) is ammonia filling up the air.

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#8 cryptodan

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Posted Yesterday, 06:17 PM

It's in the article that these are safer and highly recyclable unlike the lithium counterparts. There is no mention of danger in the article I read it multiple times before posting.

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#9 Dominique1

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Posted Yesterday, 06:20 PM

There is never any danger in a controlled environment. The problem is the chaos that real-life use brings. :wink:

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#10 cryptodan

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Posted Yesterday, 06:31 PM

Read the article it uses water and electrolytes to help produce a charge. Like a potato clock or lemon clock.

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#11 ranchhand_

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Posted Yesterday, 06:52 PM

Just a minor thought.....

And if the fire run out of oxygen, it will use nitrogen in the air instead

Nitrogen is a very stable element that will not support combustion like Oxygen, and is non-flammable like Hydrogen.

If there are no responses to my post for 3 days I remove it from my answer list. If you wish to continue the thread after 3 days please PM me.

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#12 JohnnyBeeGood

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Posted Yesterday, 07:08 PM

It's a water battery......are there issues with electrolysis?

The article and others I've read don't address this potential hazard.

Even vented lead acid batteries can explode under certain circumstances.

Water won't burn, but H2O-----> 2H+O can explode.

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#13 JohnnyBeeGood

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Posted Yesterday, 07:12 PM

non-flammable like Hydrogen.

Hydrogen is flammable.

https://www.osha.gov/green-jobs/hydrogen/fire-explosion

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#14 Dominique1

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Posted Yesterday, 09:05 PM

Nitrogen is a very stable element that will not support combustion like Oxygen

Magnesium is a very reactive metal. Surprisingly, it does burn with nitrogen and the byproduct is magnesium nitride. This one mixed with water emits ammonia gas. :wacko: