This blog recently covered plans by the Japanese rail company JR East to create hydrogen trains.
This project in Korea sounds like it’s considerably better. (Although the author admits he has not studied either project in much detail).
The Korea Electrotechnology Research Institute (KERI) promises to create a train which will run 600km on a single charge, at maximum speeds of 110 km/h, complete and running by 2022, and all for approx. $25 million.
That sounds a lot better than JR East’s 140km on a single charge, maximum speeds of 100 km/h, and hoped completion by 2024, for a cost of $37 million.