3 ms·

120 MJ/kg for H2 vs 46 MJ/kg for gasoline. Both are explosive, so I think (I'm no authority on this) we can compare those values directly, without taking into

• jandrese 5y ago
  Gasoline will not explode in normal conditions. Even in an accident it is pretty safe, although the risk of fire must always be considered. A 10k PSI H2 tank is a straight up bomb. A gasoline tank can start a nasty fire but nobody is going to be torn apart by shrapnel or killed by the overpressure wave in an accident. Gasoline cars don't explode like they do in the movies. It must also be noted that the large batteries in EVs are also a fire hazard and in some ways worse than gasoline. For gasoline to act like a bomb it has to be aerosolized first and then ignited. In an accident there's not much that could achieve that. With a high pressure H2 tank something that cracked it open and allowed all of the H2 to be released at once would instantly create the conditions for a massive explosion. All it would need is a single spark.