4 ms·

Roundtrip efficiency for batteries are 70-95% vs 47% for H2. https://www.sciencedirect.com/topics/engineering/round-trip-efficiency https://www.sciencedirect.c

• tomp 6y ago
  Do you know what’s the (current practical and maximum theoretical) roundtrip efficiency of hydrocarbons (gasoline, alcohol, methane, ...)? Could be a better alternative than H2 (and longer lasting than batteries, even if lower efficiency).