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:
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in reply to @leftoblique's post:
i love the anecdote about the inside of batteries being unexpectedly blood red, that is cursed and im glad they got to the bottom of it
I am now thinking about vampire robots sucking the blood red battery juice from their victims.
(POSTAL dude voice) you gotta be fucking kidding me.
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.
the CPU gets to 70c but the entire laptop doesn't, otherwise it'd sear your flesh if you put it on your lap
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
Also: Nah, i don't have a problem with pedantic tone there. At least i'll have a better understanding than i would just from reading the linked article, it's nice c:
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.
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