341–350 of 396 posts
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Charging private vehicles while they move sounds very complicated
Trolleybus is a technology from over 100 year ago.
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> which will be an order of magnitude cheaper than lithium ion Maybe. But take a lot of these cost claims with a giant pinch of salt: TCOE/TCOS at scale is what matters and we won’t have any real idea what that will be while most of these battery chemistries are still pre commercialization. That being said the cambrian explosion is very encouraging. Just good to temper optimism sometimes. Source: I talk to grid batte…
The issue with iron-air batteries is their lower charging/discharge current. So they focus on a different storage niche: week-scale storage. Storage at different timescales can coexist and work together on a grid, since the mismatch of supply and demand, when viewed as its Fourier transform, has components at multiple different timescales.
While LFP and the Sodium battery mentioned in the title, is 95-97%.
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Given the stated use cases of the post I responded to was electric vehicles and mobile devices, my response was framed in terms of that. Consumer devices - especially phones - famously prioritize battery life.
They also prioritize price, especially at the low end. If sodium batteries are significantly cheaper, it will be used to produce low cost devices.
Big if cheaper - which is the crux of the issue. LiFePO4 loses money in every analysis of putting in a home battery I've done: if sodium is more common, the question is does that meaningfully reduce the price of the battery.
What. Of course sodium is more common. Hundreds of times more common. You can get it from the sea, salt lakes, and salt mines. You buy it all the time in the form of table salt. It's crazy cheap by comparison to lithium, and just crazy cheap, really (though it wasn't always crazy cheap).
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If I use the steam deck for more than a couple of hours then I feel it in my wrists the next day. I still love the steam deck but it could go on a diet. (There are lighter alternatives, but I bought the steam deck specifically to financially support Valve's Linux gaming efforts)
This should be nicely solved with something like the xreal glasses. Lie the deck down and have the display right in front of your eyes regardless of how you hold the input device.
We’re undergoing a Cambrian explosion of battery chemistries at the moment. Other startups, such as From Energy is scaling up production of Iron Air batteries in West Virginia, which will be an order of magnitude cheaper than lithium ion and will provide grid scale power [1]. North Harbour Clean Energy Promised to build a manufacturing facility in Australia to build Vanadium Flow batteries, which have very high charg…
"The advantage with Sodium Ion is that, although energy densities are lower than Lithium Ion, it could still be used to power mobile devices and electric vehicles." It already does. "Chinese automaker Yiwei debuted the first sodium-ion battery-powered car in 2023. It uses JAC Group’s UE module technology, which is similar to CATL's cell-to-pack design.[84] The car has a 23.2 kWh battery pack with a CLTC range of 230…
23.2 kWh achieving 140 miles range sounds unrealistic. For example the 57kWh model 3 has a range of ~260 miles.
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I missed the 10x charge speed- that is a killer feature that more than makes up for the reduced range.
I wonder what that will mean for charging infrastructure that suddenly has to deliver 10x power to enable that. Not sure that sort of charging could be as ubiquitously placed as gas stations
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Well, hybrids sometimes get to replace the transmission with EV bits, like Toyota's system. Imagine an engine and exhaust system; now multiply the complexity by 100 and you have a modern transmission. Toyota hybrids (and GM/Chrystler/Honda) replace all that with a single planetary gearset, or with Honda, one clutch. Other systems, think Volvo, pop the EV bits in the back of the car and replace where the drive shaft u…
Modern transmissions can’t be two orders of magnitude more complicated than a modern ICE. If they are then I need to get into transmission design. An automatic transmission is basically just a series of planetary gears anyway. I would expect the marginal complexity between an ICE transmission and a hybrid transmission to be within a multiple of 2, but closer to parity. They’re both extremely reliable but an EV transm…
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This falls in line with a plug in hybrid being an excellent alternative to evs for most people. 30-50 miles of driving around town for work an errands, with an ICE for the occasional longer trip. Almost all driving will be electric without the charge anxiety.
My hesitation with hybrids is that I keep all the associated maintenance costs of an ICE engine. Now I have two power trains and energy systems to maintain instead of just one.
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"The advantage with Sodium Ion is that, although energy densities are lower than Lithium Ion, it could still be used to power mobile devices and electric vehicles." It already does. "Chinese automaker Yiwei debuted the first sodium-ion battery-powered car in 2023. It uses JAC Group’s UE module technology, which is similar to CATL's cell-to-pack design.[84] The car has a 23.2 kWh battery pack with a CLTC range of 230…
> The car has a 23.2 kWh battery pack with a CLTC range of 230 kilometers (140 mi) 23.2 kWh achieving 140 miles range sounds unrealistic. For example the 57kWh model 3 has a range of ~260 miles.
The energy consumption seems to be even a bit better than of the model 3
"with energy consumption approaching 10 kWh per 100km."
So roughly half capacity equals roughly half range - sounds about right to me (23.2 kWh are the same avaiable energy, whether sodium or lithium).