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A comment on Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen. Parent comment

Re:Hyundai Nexo sets new world record 887.5 km travelled on ... by abakker on Tuesday May 18, 2021 @12:37PM (#27197213)
With hydrogen this is especially problematic due to hydrogen embrittlement. https://en.wikipedia.org/wiki/Hydrogen_embrittlement
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Re:Hyundai Nexo sets new world record 887.5 km travelled on ... by semi-extrinsic on Tuesday May 18, 2021 @06:38PM (#27202188)
Nope, because you don't make hydrogen tanks out of materials that are susceptible to hydrogen embrittlement.

In particular, pressurized automotive-size hydrogen tanks aren't made from metal at all, they are typically epoxy/kevlar/carbon fiber composites.

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Re:Hyundai Nexo sets new world record 887.5 km travelled on ... by abakker on Tuesday May 18, 2021 @09:12PM (#27203439)
OOC, since you know what these tanks are made out of, what is the duty cycle/lifespan of those tanks? I was presented some info on Kevlar tanks for drones using fuel cells and remember thinking that the lifespan was very short.
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Re:Hyundai Nexo sets new world record 887.5 km travelled on ... by semi-extrinsic on Wednesday May 19, 2021 @04:21PM (#27213986)
Toyota certify and guarantee their tanks for 15 years, in production cars that you can go out and buy today.
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Re:Hyundai Nexo sets new world record 887.5 km travelled on ... by samplatt on Tuesday May 18, 2021 @11:31PM (#27204216)
Anything bound by epoxy (or any polymer?) surely will have a comparably short lifespan...
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