Part 4: Hydrogen, Is It Safe? 

Id suggest another safety feature would be to add some natural pigment powder coating to any tank & pressure release device...so in the event of a leak say on your drive or obviously in a crash situation...the powder colour dispersion will allow you to see that the presence of hydrogen is there - even if it may not identify how much volume has escaped but at least an instant indicator of leakage present

There's a video of a Toyota Mirai tank getting shot and pretty much surviving a shot from a 50 caliber firearm. I'd call that safe.

@ Hyundai NZ I'm curious to see your data regarding regular leakage. How much hydrogen fuel does the tank lose over time? How does it compare to battery discharge?

Now compare that to lithium battery fire lol. Once it catches fire, it can't be stopped.

So instead of exploding the tank would just… rip? Can we get a video of that actually happening?

Was the engine running during the crash testing?

What would happen if it was exposed to fire tho?

2:10 but carbon finer metals at 200 Celcius. 400F Steel melts at 1450 Celcius, 2800F

Hyundai XCIENT Fuel Cell ♻️H2O back to Nature ⛅️Clean Air For Life Green Hydrogen fuel cells are the future to have one. Living in Colorado Springs, Colorado USA🇺🇸 the Hyundai Nexo FCEV was high atitude tested here on Pikes Peak at 14,000ft last year. Awesome performance. Building my first hydrogen fuel cell in 1982, there is no path to Net Zero Emissions without green hydrogen fuel cells, a verifiable scientific data fact. Cheers, KP Colorado Springs, CO🇺🇸

"All gases have to risk of exploding, depending on "...please show me how exactly you explode inert gases like argon....?

Please STOP saying hydrogen is an Energy source! It's an energy CARRIER - which means you have to MAKE IT, not just mine it / drill for it, this means the production of hydrogen creates a net energy LOSS (approx 20%) from the input energy. It is a possible energy carrier, but it does require VERY high pressures to store enough to replace carbon-based fuel and required about 2.5 times the volume to enable the same milage. It does weigh less, which is good, but takes up much more volume to carry.

So the tank has a emergency vent to depressurise when in a fire I'm guessing there must be chance of a BLEVE (Boiling Liquid Expanding Vapour Explosion) when exposed to extreme heat or fire for a prolonged period.

So instead of an explosion the car releases high explosive gas. Hmm that’s one step before an explosion, specially if metal pieces fly around due to a crash and sparks are everywhere…. My happy future Is an electric car running into a hydrogen one, burning batteries nobody can extinguish mixed with high explosive gas in the streets…. A nice Monday

Hydrogen almost always explodes because of how fast it finds the necessary oxygen to do so.

What happens in a 2 car crash when the other car is on fire and the hydrogen tank is in the danger zone

More effectient than a combustion, lesser than electric. Not enough stations and it's much more expensive to fuel up with hydrogen than petrol; but I guess Dihydrogen prices weren't affected by gas's hiking prices. ⬅️Correct me if I'm wrong!

There are too many imprecisions in this video to mention.

Redflag from questionable logic: "we're building them near heavily populated areas, so they must be safe :)

1:34 Wait a minute. An „explosive“ Sticker on a hydrogen gas tank?

How efficient is electrical conversion? What kind of generators are used?

What a lie … people garage their cars and all the leakage accumulates in a closed room …

Safe depending what speed about to crash.

So, just to be sure, Hydrogen powered cars like that Toyota Mirai will not become a Hiddenburg when it got into a car crash accident right?

3:06 Bruh! *Not North Korea!* 😂😂😂😂

Such an obvious advertisement. LOL

Even if liquid hydrogen car?

so if there is anough lunatics in the world that is doing the same thing it means its safe.

good luck when a factory of this goes to flame. it would be like a hydrogen bomb 😔 🙏 hopefully not.. salute to you guys

Just missed out many facts

Meanwhile in my Tesla that I’m charging AT HOME.

Italia doesn't have Eiffel tower wtf

Chinese company Grov hydrogen mach safer than hundai and tesla!

wh- wait... you mean the stuff that... to borrow a phrase... "YOU MADE THE CAR INTO THE HINDENBURG?!" An open flame is north of 1000C! if your ignition temp is 575, who gives a damn?! is hydrogen safe? - short answer: NOPE!

I would like to highlight that hydrogen is NOT a viable alternative to petrol. The reason there is such a push to put hydrogen in vehicles is that hydrogen is created as a bi-product, in both the burning of methane and electrolysis. Due to its dangerous properties (if you tickle it a bit it will explode a city block), there is little demand in the industry, and those in it are trying to artificially create their own demand. Not only is hydrogen even more potentially dangerous than natural gas vehicles (despite having incidents be almost unheard of), but if we were to RENEWABLY create hydrogen through the only renewable method possible (electrolysis) by purely green energy for EVERY vehicle in, let's say the UK - which has higher ratios in this which makes my argument even stronger than if I was using the US for an example - we would need over 5 times our current capacity for green energy production. That's 5 times our CAPACITY, which would mean that all of our green energy was ONLY contributing to the production of hydrogen - as a biproduct. To give you an idea of that, the UK's production of green energy contributes to almost a third of our energy production over here (~29.5%, higher than in the US). Meaning that for this to be a viable option in just this country, it would require that all of their energy production was used for hydrogen production through electrolysis (assuming it was all green), and then two thirds more of their production capacity would have to be imported (green energy specifically) and then energy would again have to be imported for every single other use that the UK needs it for. To shine a light on how much energy this is, electrolysis would go from taking up a minute fraction of 1% of our energy consumption, to ~166%. Even by checking the official Hydrogen UK infographic on the usefulness of electrolytic hydrogen, their claims do not make sense because the fuel takes more energy to create than is released when it is used (as it is a bi-product) anyway, hydrogen rant over, I also could've enthasised a lot more how dangerous it is, though hydrogen cell fuels in vehicles (whilst not being efficient) do seem to be getting better on their second standard generation. The best part? I didn't even mention how almost impossible it is to store due to it's atomic structure being so small.