News for hackers. Stuff that matters.

A comment on A long-lasting, stable solid-state lithium battery. Parent comment

Re:A long-lasting, stable solid-state lithium battery by scythe on Monday May 17, 2021 @07:20PM (#27189553)
It's worth noting that the solid electrolyte in these batteries is based on phosphorus pentasulfide -- not particularly flammable, but prone to releasing clouds of extremely toxic hydrogen sulfide on contact with water. Exit one problem, enter another.
[ Parent | on HN ]
Re:A long-lasting, stable solid-state lithium battery by maxerickson on Monday May 17, 2021 @09:06PM (#27190240)
Hydrogen sulfide is dangerous in a contained area, the smoke from a smallish fire producing it would be something to be aware of, not a catastrophe.
[ Parent | on HN ]
Re:A long-lasting, stable solid-state lithium battery by dreamcompiler on Monday May 17, 2021 @11:13PM (#27190898)
One big whiff of concentrated hydrogen sulfide will kill you very dead very quickly. People tend to think they would smell it first, but if it's concentrated you'll be dead before the smell even registers.
[ Parent | on HN ]
Re:A long-lasting, stable solid-state lithium battery by Robotbeat on Tuesday May 18, 2021 @09:27AM (#27194252)
Extremely unlikely.
[ Parent | on HN ]
Re:A long-lasting, stable solid-state lithium battery by tuatoru on Tuesday May 18, 2021 @10:48AM (#27195345)
Not at all.

This is a known hazard when working on waste-water networks. There are a few deaths every decade, despite nearly everyone having gas detectors (and being told to use them before going into a manhole).

At high enough concentrations, H2S just shuts down your smell receptors.

[ Parent | on HN ]
Re:A long-lasting, stable solid-state lithium battery by Robotbeat on Tuesday May 18, 2021 @11:48AM (#27196280)
People who die in such situations don’t not smell the hydrogen sulfide. They just either have no way out quickly or they keep going in spite of the danger. I’ve been in such situations.
[ Parent | on HN ]
Re:A long-lasting, stable solid-state lithium battery by fnord77 on Monday May 17, 2021 @09:24PM (#27190337)
a contained area, like ... the cabin of a car?
[ Parent | on HN ]
Re:A long-lasting, stable solid-state lithium battery by maxerickson on Monday May 17, 2021 @09:25PM (#27190339)
The giant fire would be the much bigger problem if you are still in the car.

(The fire is smallish in a 'amount of material' sense and huge in a 'you don't want to be anything resembling close to it' sense)

[ Parent | on HN ]