Charged with fusion power! From space! Made from privately mined asteroids!

cure for dementia found"

The US government could use some of that these days.

You are a literal scientist or something that always answers these questions. We need you!

Or some way to passively charge phones fast enough that they never need to get plugged in again. I hear one of the ways this would be done, would be by absorbing ambient radiowaves from telephone poles

Sounds like a win/win!

Start of my villain arc right here. Like unidan, but with more buttholes.

Too bad the market doesn't care about human rights

Uh yeah, not a good idea now that I think about it, apologies.

But since you are already here, the guy above me says batteries have not improved much, and I'm too dumb to argue.

I won't let it go to my head. I promise. Probably.

Anyways tho for an actual opinion:

This thread is a bit of a mess and I would caution taking anything being said (except by me, the absolute authority) without a large grain of salt - however mostly people aren't contradicting each other, it's just a hugely complex topic that quickly devolves into semantic-adjacent arguments about how we should be comparing battery chemistries (on market / in lab / cross-chemistry) and what degree we should be considering the "soft factors"; things like the number of recharge cycles, robustness of the cells to damage, cost of manufacturing and/or recycling the cells, etc.

Sodium batteries are a big deal, and as far as I've seen we're finally at the point where they're starting to become market viable, but they're still a largely unproven technology. Arguing that battery tech hasn't improved in the last decade is obviously wrong, but it's also not wrong to say that there hasn't been any dramatic improvement in the technology in the last decade. None of the many "miracle battery tech" announcements that promise to have double-or-better the capacity of lithium chemistries has panned out, we've just been making slow gains across many chemistries and those cumulative 10% improvements to battery life year-over-year are finally starting to add up to where the average consumer can really notice them.

Thank you hero!

Well, I know the difference between alkaline, NiCd, NiMH, and lithium batteries, and that they don't grow on trees, so at least I have that.

That's why sodium ion batteries are good. The market only cares when it effects their bottom line, and a few more years of development should see more Na+ battery market share

Doesnt matter if the capacity is even less than sodium batteries.

We'll see.

Low capacity is my guess.
Dunno if the article is the same I have read a few days ago but the, mentioned "everything" except the comparable capacity to sodium or lithium batteries.
And I can't imagine that the capacity for salty water with tofu remnants is much higher than a sodium battery which is atm serialized for mass production runs (isnt it even available in some capacity as a commercial product?)

I mean the first diagram is effectively useless without knowledge of battery density. They as well could compare the 2010 compacts with 2025s SUVs which have probably 2x the amount of total capacity.
For the other charts: Agreed.

Ever wondered what the salt does after melting?
Same issue.

No thermal runaway if I remember correct as those are not prone to exploding (unlike li-ion/li-po)

I use salt as a a weed killer in some specific area. So I guess I know, at least a little bit

If the data is available for mass production, you just need to copy paste the factory and establish the trading partners for supply chains.
Not the same issue as, for example, ASML and China.

TWICE AS MUCH COMPARED TO WHAT????

My left ball?

Compared to a non-hydrous sodium vanadium oxide system.

Just to clarify, because I feel that I'm being impuned in some way, my only comment was that while there has been significant development in batteries in the lab up until now this is the first commercially available battery includement since we got off lithium polymer.

The original comment I was responding to was trying to suggest that battery technology over the last decade has significantly improved but realistically all we've done is being come clever with the technology we already have, and that this is the first time battery technology at a commercial level has improved. After all, a lot of ICE cars are still using lead acid batteries, and the remote control for my TV uses batteries that my grandparents would have recognised.

I remember while back when lithium oxygen batteries were the new hotness and that never went anywhere.

You can throw any battery in the ocean. The better question is should you?

Yep, I'm just annoyed by lazy headlines.

There are a bunch of lithium ion chemistries that have come to market more recently

Like what? [Citation required]

If you think rechargeable battery R&D from 10 years ago isn’t making it into mass produced products today, you’re just not paying attention.

Please provide examples.

I mean, as much as a person who doesn't work in research and development of energy storage, or work in industries directly related to it, I personally feel I've kept up. The day Donut Labs announced their battery I was watching review videos about it, and I want to believe, but until I see it for purchase, I'm not going to call it a win.

caution taking anything being said (except by me, the absolute authority)

Oh man, I am so glad we finally have one of those. I was worried I was stuck in this confusing thread about semantics with just my own broken brain.

Oh absolute authority... When we will give rocks boobs?

And it's got electrolytes!

Make it into bricks and build a pyramid somewhere really dry?

Uhh you know you can buy an external mag safe battery bank with a solid state battery for like 45 bucks on amazon as well as the big generator ones as well?

I agree that cost isn't amazing. You are essentially getting about half the capacity per dollar spent to a standard battery device but also these are in fact more stable for temp swings and damage. Soo... consumer available and not a fortune just need to have justification for it.

Sodium-ion batteries are not hype though, they are in production use in multiple industries already. They are generally superior to Lithium based batteries in all regards, with the exception of having a bit lower energy density. An equivalent LiFePO4 battery might be 70-80% of the size for the same storage. It's not a big deal for large applications like cars and solar storage.

TNT has 1162 Wh/kg ratio.

These new lithium-ion batteries get to 300-400Wh/kg range.

We are hitting the limit what is doable with energy density. Do you really want to carry 100g of TNT in your pocket or few tons of TNT in vehicle going 100km/h.

Of course things are not directly comparable, but ball parks.

YOU WON'T BELIEVE Actor Joins Film

Cool.

It's time for your nap, Mr President.

Kinda, yes? Phones already do so much, why not one additional feature to deter theft.

We've got a lot of that going around in the USA right now.

i’d say stability is more important than energy density

like gasoline has more than 10x the energy density than tnt and we’re perfectly fine with many kg of that on a vehicle going 100km/h

a fully fueled vehicle is the equivalent of ~600kg of TNT, but it’s very stable whilst TNT is not

no, actually, we do know that… things like cycle time, lifetime cycles, their durability < 20% and > 80%, performance in the cold, sustained current

lots of these are to do with heat and degradation, but these are all problems that can be solved to improve batteries in general… some of them are inherently to lithium chemistry and easily solved with others

sodium batteries, for example, are better in most categories other than wh/kg making them not useful for portable electronics and cars etc but for stationary applications these benefits can significantly outweigh the major downside because wh/kg is not a useful metric (eg grid storage)… especially true when sodium batteries are able to deal with higher operating temperatures which means you don’t need as much if any extra cooling, which is getting close to making up for even energy density of the system in some situations

flow batteries are also real things, as are hydrogen fuel cells

That is true, but my small EV the batteries are 500kg, same car with combustion engine only has 40L fuel tank.

Stability is important, but lithium-ion ain't really that stable either. Still waiting some solid state to get made.

Its got electrolytes! It's what plants crave!

350 page study concludes some people spend too much time reading.

Tuesday.

The Gargamel Research Institute

No

Yeah but firewood is like 5 kwh/kg, or 4 times the energy density of TNT. We drive around with wood in our cars all the time.

TNT has 1162 Wh/kg ratio.

How do you recharge TNT?

We are hitting the limit what is doable with energy density.

I mean, we're definitely running into a problem of how you build a battery without also building a bomb. But the entire point of TNT is rapid thermal expansion. The point of a battery is very low voltage steady release of electrical charge.

I might also note that C4 has around 6 Mwh/kg. A bit of applied chemistry can go a long way to improving energy efficiency. And that's before you take advantage of geometry to focus pressure, via a shaped charge.

Point being, there's a lot of clever ways to juice a lemon. We're a long way from the end of the road on battery improvement.

Yeah, lithium ion is a good stopgap while we develop better options, but it's by no means stable. Get them too hot or puncture a cell and you're going to have a bad time.

Charging a car with fusion power is actually feasible. But it'll take more energy to keep fusion going than it creates.

Well it's a pretty big deal, especially for large power storage.

Me: looking at plants after realizing that I'm full of ions

"KEEP IT IN YOUR PANTS!"