infodumpling

quattro bajeena had some good ideas

  • she/her, they/them

some nerd who's into estrogen and giant robots. also critical theory.

currently in my »theory tranny« / »that weird girl with a synth« era.


leftoblique
@leftoblique

Turns out the gradual loss of ability to hold charge in lithium ion batteries might be in part due to PET tape used to assemble the batteries themselves.

This is a HUGE discovery and will potentially impact a ton of consumer electronics:


ticky
@ticky

I cannot believe how much we all just collectively thought of plastic as this harmless, completely inert thing, when it's been offgassing uncontrollably the whole fucking time in all kinds of situations

can't wait for "PET-free" battery replacements to start landing, I guess


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in reply to @leftoblique's post:

And it wasn't even on some unbelievably high temperature. Like, running unoptimised Unity game on low-end laptop will easily get it to 70c.

So that means the battery is doomed to be passively discharging forever since its first heat incident. Wow.

True. But they found changes in the batteries in temperatures below that. So i'm sure that the macbook i used in my previous work got hot enough at least once - it was the one that i had to get external keyboard for, since it regularly got so hot that i couldn't type on built-in keys.

actually, reading the original papers, they only two specific battery types: lithium iron phosphate (LFP) batteries and nickel manganese cobalt (NMC811). in particular, the batteries in your phone and laptop are lithium cobalt oxide (LCO), which is not under study here. i won't pretend to know whether the mechanism works for LCO batteries but it's not tested so.

e: also this is high temperatures during battery formation, not actual use. not sure if high temperatures during use after the battery is 'finished' would have the same results.

if i sound like i'm being pedantic it's because i have a well-earned distrust of popularization of scientific articles :v

double edit: looking further, it sounds like the authors suspect the redox shuttle formation mechanism might be present in all lithium-ion batteries, and shuttle activation may be temperature-dependent. so big question marks

Should have been obvious in retrospect, the Black Corpse of the Sun would naturally be antithetical to "rechargeable" power as a keystone in the perpetuation of solar capital. Power must be exhumed, and consumed, for the tyranny of the Sun Above to be brought low.

in reply to @ticky's post:

i mean just like lead plastics were known to be bad but propaganda and lobbying won out because it was as down right horribly toxic. for reference in the US it took literal decades after europe banned lead to get it out of everyday items.

This is one of those discoveries where, I feel like dang I shoulda thought of that one, especially since I know similar stuff happens with plastic dielectrics in capacitors. I guess it goes to show how much there still is to analyze and discover in the world.