China’s water battery has almost double energy capacity than lithium cells

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https://interestingengineering.com/energy/china-energy-dense-aqueous-batteries

Researchers in China have developed a water-based battery, which is claimed to be much safer and energy-efficient than “highly flammable” non-aqueous lithium batteries.

Interestingly, the researchers say that these new batteries will be twice as energy-dense as traditional lithium-ion options. This holds the potential to revolutionize the electric vehicle industry.
 
I'll believe it when I see it.

If you follow technology news much at all, you know that over the years there have been researchers that have reported being on the brink of releasing revolutionary battery technology, that will have significant improvements in capacity, be able to charge in only a few minutes, have more capacity/density, and be safer. Some of these researchers have reported that the new battery technology will be available for mass production within perhaps 2-3 years.

In each case these forecast dates have came and gone. Li-ion is still the standard for EV.

So, yea, I'm pretty skeptical when it comes to articles promising new battery technology. When Panasonic, LG, Samsung, Tesla or one of the other leading manufacturers of batteries say they have developed new technology, then I will get excited about the possibilities.
 
Here's the original research from what I can tell. @JHZR2 is our battery guru, perhaps he can take a look at the chemistry and see any obvious problems:
(PDF) Reversible Multi-electron Transfer I-/IO3- Cathode enabled by Hetero-halogen for Ultra-high Energy Density Aqueous Batteries (researchgate.net)
Cadmium, iodine, and bromine. In a lab setting.

What could go wrong in an industrial process?!?

I agree with the comments about flammability and other challenges with Li-ion. It’s true.

But let’s talk when we get to practical scale. There are plenty of great ideas when it comes to energy storage. Look at the GE high temperature Sodium battery. That had a lot of promise, even a manufacturing line.

Until it goes beyond a professor making claims, I’d refer you to:

https://whatisnuclear.com/rickover.html
 
Cadmium, iodine, and bromine. In a lab setting.

What could go wrong in an industrial process?!?

I agree with the comments about flammability and other challenges with Li-ion. It’s true.

But let’s talk when we get to practical scale. There are plenty of great ideas when it comes to energy storage. Look at the GE high temperature Sodium battery. That had a lot of promise, even a manufacturing line.

Until it goes beyond a professor making claims, I’d refer you to:

https://whatisnuclear.com/rickover.html
VERY familiar with the paper reactor concept ;)
 
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