Recent comments in /f/technology

Steakosaurus t1_ja3sm26 wrote

Reply to comment by Muvlon in Ford’s EVs are getting faster charging and more affordable batteries thanks to new chemistry by Ssider69

Yeah and those are really functions of the energy density of the chemistry.

I would argue that things like overcharge and impact/crush are less of a concern as we move forward, since overcharge has been largely made a nonfactor by more sophisticated charging software and impact is largely addressed with proper pack design, but LFP definitely remains an attractive option from the safety point of view.

Primarily, the relatively good thermal prop performance is what many are interested in. High nickel chemistries have a lot of latent energy and volatile electrolytes that make battery fires aggressive and dangerous. LFP, having far lower latent energy, is much less prone to a runaway reaction - in which the becomes hot enough to self perpetuate an ignition burning through it's electrolyte and active material - which means it's far less likely to propagate to nearby cells and cause a chain reaction that we see as a massive EV car fire.

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Steakosaurus t1_ja3rr7x wrote

Reply to comment by bigmark14 in Ford’s EVs are getting faster charging and more affordable batteries thanks to new chemistry by Ssider69

The battery did not degrade to 50% capacity in 15 years, unless it was barely used and babied for the entirety of that time.

Capacity degradation happens over the life of the cell and you can see substantial loss in 3-5 years of normal use.

So when you're starting with a chemistry that's already poor on range, and then reducing that range by 20-30% within the first 5 years of it's life, you can see where customers would be unhappy with the performance.

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evicous t1_ja3r9ri wrote

Reply to comment by CatalyticDragon in New tech could bring affordable, hyper realistic screens with 1000+ Hz refresh rates by Sorin61

I don’t know why you’re getting downvoted. We all joke about 1khz being unacceptably stuttery for esports but… we’re well on our way to doing that on the high end. Frankly given the CPU bottleneck on a 4090/7900XTX at 1080p we might actually already be there with GPUs, or we’re very close.

A kHz refresh 1080p display will be very usable with adaptive refresh already, honestly.

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sk8thow8 t1_ja3pyxz wrote

Reply to comment by servia23 in LockBit leaks 44GB of Royal Mail's data and sets fresh £33 million ransom by tyw7

And If you don't pay the ransom, it guarantees the files are released. How's that better?

Believe it or not, these large ransomware groups do release files and don't keep bleeding the same victims repeatedly. They make millions a year doing these ransoms. Like I said, they only get paid because they have a history of holding up their end of the deal. The first report that says LockBit group doesn't release the files or continues the ransom after payment will be the last ransom they're ever paid.

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dungone t1_ja3p4db wrote

Reply to comment by Pazoll in Limitless Possibilities – AI Technology Generates Original Proteins From Scratch by Vailhem

Nothing much. People were already doing this for 50 years. Using computers and using machine learning, too. Generating millions of random protein formulas is the easy part. The hard part is manufacturing them and testing them because that's still like looking for a needle in a haystack. But by improving the machine learning approach, it gave the researchers a smaller haystack.

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moofunk t1_ja3ob62 wrote

Reply to comment by Rick429CJ in Ford’s EVs are getting faster charging and more affordable batteries thanks to new chemistry by Ssider69

LiFePO4 batteries are safer, because they don't release oxygen easily.

The oxygen bond to phosphorus is much stronger than in traditional EV batteries with cobalt bound to oxygen, which means they can't burn as easily, they aren't affected by higher temperatures and can't have thermal runaways.

So, the battery can get hot and smokey, but that's mostly it.

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