91–100 of 211 posts
> it could release highly toxic hydrogen sulfide gas. How bad is it in real world conditions? Because from what I'm reading it's not the "it makes you sick" kind of toxic, but rather the "it kills you in seconds" kind of toxic.
The Occupational Exposure limits are fairly low 'ppm' numbers, and LC50 is 712ppm for 1 hour. (That is the concentration at which 50% of the exposed rats died.)
> 750 Wh/kg is great. To put it mildly. Energy density in the current leaders in that category, lithium ion batteries, 250-270 wh/kg. So, provided a similar or better ratio of watt-hours to unit of volume, we’re basically looking at tripling the energy storage of EVs or significant weight reduction, in the ideal scenario of this design being a safe and cost effective replacement for current batteries.
Out of curiosity, What is the wh/kg for petrol?
Hey scythe, write a blog abut this. This seems like semi-decent conjecture that'd get a lot of pull with the electric car crowd on the Fediverse, and you'd get a fair number of eyeballs pointed in the same direction.
Earlier quoted context omitted.
Yet another problem that could have been avoided if government had had the foresight to enforce a technology-agnostic swappable battery standard.
We don't need the government for this. Consumers could refuse to buy proprietary solutions.
Meanwhile, on this planet, the necessary standard didn't emerge from government or industry.
Earlier quoted context omitted.
[flagged]
What is a "period of stability"? Sounds like a rather arbitrary and subjective designation, but it seems unlikely that an economy that has existed for thousands of years is yet to have its first "period of stability".
Did the Japanese print 80% of their money recently?
Earlier quoted context omitted.
The additional capacity might be wanted in cold climates. The massive range drop when running the cabin heater plus slow charging in cold environments definitely makes me pause when considering an EV.
I’ve found that the range of my EV is overkill in summer and about right in winter. I live in Minnesota, USA where the winters tend to be cold.
Earlier quoted context omitted.
When will this meme die? A Model 3 is very comparable in weight to an Audi S3. The Hyundai Ionic 5 is comparable weight and interior volume to a Toyota Rav 4. The Hummer is a monster either way and is not a good sample.
The floor for EVs is very high. In Europe people frequently buy compact cars. Let's take VW Golf as an example. The lightest version of the current model weighs 1300kg, more or less. The EV equivalent, ID.3, weighs 1800kg. That's 500kg extra (!) which is almost 40% more. That's an insane amount of extra weight for a small car. The percentage difference becomes less for bigger cars, so I imagine that's why some Americ…
This will be neat if it works but really there isn't going to be a huge market for 500+ mile cars vs the cost savings of getting a 300-400 mile car. The exception might be road-trippers and people who do a lot of towing but I suspect that is a much smaller population than people tend to think.
> it could release highly toxic hydrogen sulfide gas. How bad is it in real world conditions? Because from what I'm reading it's not the "it makes you sick" kind of toxic, but rather the "it kills you in seconds" kind of toxic.
It's unlikely you'd be exposed to this level for any period of time unless the battery ruptured into the car, underwater, with the windows up, in which case you have bigger problems. You're unlikely to to see 700ppm in an outdoor situation like a car wreck or battery malfunction on the highway during a rainstorm. Atmospheric CO2 is about 450ppm for comparison.
Ammonia is a superior refrigerant (widely used in industrial circles, and causes no ozone depletion, is biodegradable, etc) but not used in residential applications because it's highly toxic if there's a catastrophic seal failure and not vented outside, despite the fact that humans are very efficient at smelling even the slightest ammonia leak.