Oct 12, 2015

The CRRC, the Chinese state owned rolling stock manufacturer and the world's largest train builder, has developed graphene-based supercapacitors that can power electric buses with higher efficiency and for a longer period. 

The CRRC has reportedly produced two types of capacitors, a 2.8 Volt/30,000 F capacitor and 3 Volt/12,000 F one. The former is said to be able to power trolley buses for up to 10 km after a one-minute charge, compared with 6 km in the previous generation. The latter one can provide enough electricity to power a tram for 6 km with only 30 seconds of charging.In addition to improvements in performance, the new products are also more energy-saving and environmentally friendly. 

Source: 
Graphene Supercapacitors market report