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Why is everyone trying to build a solid-state battery?

construction-physics.com

251–260 of 331 posts

Re: Why is everyone trying to build a solid-state battery?

#251

Earlier quoted context omitted.

> The latest battery chemistries perform incredibly well in cold and hot climates. Oh? Show me a model of EV that has it is going to lower capacity battery heating and cooling systems. I’m an automotive EE… I can’t name any. I’m working on things that will go in 2032 vehicles. Surprise, most are ICE, but of the EV vehicles the battery protection systems are becoming more rugged, not less. Where does your supposition…

I'm surprised they didn't flag and downvote you. There seems to be a certain crowd that seems view EV as sort of a panacea without considering the true realities which involve experience and research to know they are far from replacing ICE

I finally met someone who plans to downgrade from EV to ICE. He does 100k km per year, running multiple businesses. Lives 120km outside Dublin. Biggest issue seems to be wait at public charge stations. IMO he needs to get long range EV and get better chargers at home/work. But oh well, I'm not going to stop him if he's going to get luxury sports cars instead lol.

Re: Why is everyone trying to build a solid-state battery?

#252

Earlier quoted context omitted.

This is the correct use for EV. A second car, around town. Perfect. The EV push back is because the MBAs decide to market them as replacement daily drivers. And despite the people that went all in being part of the same reality that has caused the massive pushback against EVs… they will defend their purchases to the death. I have had two EVs for around town. Love em. But not real for only car outside of California.

> But not real for only car outside of California. Tell that to the millions of people in EU and China who have EVs as their only car. I swear Americans live in the 50s in 2026.

I suspect there's a big of cognitive dissonance here. My guess US has more emphasis on road trips, longer distances, vastly more wilderness areas, etc.

Europe is mostly urbanized it's almost boring. Dunno about China, but I guess they cracked charging infrastructure.

Re: Why is everyone trying to build a solid-state battery?

#253

Earlier quoted context omitted.

Didn't everyone have one of those old mechanic friends who liked to put the cigarette out in the can of gas to scare the tourists?

...it was probably diesel not gasoline

Oh, it was most definitely gasoline. As long as there is no vapour hanging above the container, it works just fine... as the neighbour post says, the first 50 times. Then one day the old timer blows up himself and the shop

Re: Why is everyone trying to build a solid-state battery?

#254

Earlier quoted context omitted.

This is the correct use for EV. A second car, around town. Perfect. The EV push back is because the MBAs decide to market them as replacement daily drivers. And despite the people that went all in being part of the same reality that has caused the massive pushback against EVs… they will defend their purchases to the death. I have had two EVs for around town. Love em. But not real for only car outside of California.

> But not real for only car outside of California. Tell that to the millions of people in EU and China who have EVs as their only car. I swear Americans live in the 50s in 2026.

It's different use cases and daily living styles entirely. You can't compare nations and cultures as though they operate in an equivalent manner.

Re: Why is everyone trying to build a solid-state battery?

#257
post #230

Earlier quoted context omitted.

Wood is a solid-state battery. The term has obviously been selected because of how revolutionary solid-state electronic devices were/are. And it's not like they selected it after a revolutionary energy storage device was introduced. Solid-state batteries ( cells ) are an incremental improvement, at best. And because this is the web: I am not being negative about the technology. I happen to be of the radical opinion t…

The word "battery" is a stand-in for electrochemical cell, which wood obviously isn't. Quite some advantages are expected from batteries that don't involve liquids or gels, whether incremental or not.

I don't know what more I can say to convince you that I'm not trying to put down the technology. I'm interested in it, that's why I think it's a shame to curse it with a used-car salesman marketing name.

As for wood batteries,

Most usage of the term 'battery' is independent of technology, outside of usually wanting electricity as the interface. The fact that most batteries people talk about happen to be electrochemical cells is incidental -- it's irrelevant to whatever they are actually talking about. So yes, a lot of the time 'battery' happens to refer to electrochemical cells, but it also refers to energy storage devices in general, which wood obviously is.

The problem with wood being a "solid-state battery" is surely the solid-state part.

Q: I mean how does that even work, solid-state combustion?

A: No, it's still obviously a normal chemical cell. You do a chemistry and these special "electrodes" turn the result into electricity.

Q: Can you recharge it?

A: Well, not in your own home, but in your backyard, maybe sort of.

If we are to use the term 'solid-state' to refer to anything that is solid, as in "solid-state battery", and we can get electricity from burning wood, I don't see the problem with referring to wood as a solid-state battery.

Re: Why is everyone trying to build a solid-state battery?

#258
post #210

Earlier quoted context omitted.

An ion is a atom that has lost electrons and thus it has a + charge. The electrons are the - charge. The electrolyte allows + to flow but not -

Cool! That seems to fit as the voltage build-up (assuming no current taken from the battery) is not reversed by the negative ions flowing backwards. I still have the question though. How does the electrolyte do that? :-)

Electrons require significant voltage to move through free space or insulators. They generally move between places by hopping between atoms with free outer electrons. Electrolytes are designed to not have any.

Re: Why is everyone trying to build a solid-state battery?

#259

Earlier quoted context omitted.

> “5-10 minutes every two hours” … lol, that’s good when you’re going from LA to San Diego. If I had to stop every two hours on a road trip I’d get a train ticket, it would feel a lot faster. Sorry, now you're spewing nonsense. LA to SD does not require charging at all. I did more than 120000 miles of road trips in my EVs across the US and Canada, even before they were fully covered with charging networks. So I know…

You can’t just assume every time you go somewhere your battery is fully charged. I mean, you can, because you are clearly emotionally tied into your purchase. But I can’t as an engineer.

I drive an (awesome, by the way) Honda Odyssey. I can get somewhere in the realm of 500 miles from a tank of gas with that capacious machine.

But I can't assume every time I go leave in my gas-fired Honda that the tank is going to be completely full.

I might decide to fill up before I leave town on a long trip, or I might decide to just head out and start it with whatever's already in the tank.

And either way: Refilling will need to happen at some point, just like with an EV.

And that's fine. I'll probably be stopping every couple of hours or so anyway, if I'm doing it right.

---

There was a time when I'd cannonball every trip as hard as I could, but it was exhausting to do that. I'd work so hard to minimize travel time ("I must not waste time!") that I was basically useless once I finally arrived at my destination. It was terrible. When I'd finally finish the trip, I would often be in such a bad way that my brain would be fried, my abdominal muscles would hurt, and I was very drained of energy; I was always a dysfunctional asshole who needed a proper nap.

But nowadays, I grant myself the time to take things a little easier and take breaks. This method's on-road time takes longer than a cannonball, but that's OK: It allows me to still be a functional and sane human once I arrive where I'm going.

I mean: I'm not delivering paid-by-the-mile packages here. Rather, I'm going somewhere because I want to enjoy myself when I get there, or because I have work to do (or sometimes a combination of both). Therefore, I do not have to race.

And now that I'm not trying to race from A to B anymore and I choose to take it easy periodically as I go, the trip itself isn't such an exertion.

I can get some fun and/or constructive stuff done once I finally arrive, or if it's appropriate I can lay down for some properly-restorative sleep like a sane person who isn't feeling like they just pulled an all-nighter working on some deeply-involved project that they stubbornly refused to pull myself away from.

The overall time investment of a road trip (including eventual wind-down and recovery) is about the same, but I find that the results are better for the entire duration.

And that's me, with my gas-powered van that can go an astounding 500 miles between refuelling stops.

I don't need that much range to take a long trip; it doesn't help much there at all. And in my normal daily life, the big fuel tank mostly just stretches out the time between visits to my favorite gas station between home and work.

With the long-trip prerogatives I've described, an EV would normally do fine.

And the rest of the time, at least for those whose living situation can allow it: Plugging in at home can often completely eliminate refueling stops during any series of normal weeks. (When EV owners laugh about not being able to remember when the last time they needed to stop at a gas station was, they aren't joking. It works.)

Re: Why is everyone trying to build a solid-state battery?

#260
post #168

Earlier quoted context omitted.

Depends, if you are turning that electricity into heat using a heat-pump you might win on most situations (maybe lose if the weather is really cold outside, unless you add geothermal loops, but then its a lot more expensive to make)

No it wouldn't depend. Electricity generation and electricity transfer has losses. Gas transfer has loss only if there is a leak.

The ceiling is not 100% efficient, when you have a heat pump.

Also, the US residential gas infrastructure leaks ~1% of the gas it moves. That sounds like nothing, until you account for how unburnt ch4 is ~80 times worse than co2 on a timescale of 20 years.

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