Graphene ultracapacitor boost from bus deal

September 24, 2018 //By Nick Flaherty
Graphene ultracapacitor boost from bus deal
Skeleton Technologies has signed a high volume, multi-million-euro with UK bus maker Wrights Group to supply graphene ultracapacitors for the latest KERS energy recovery systems.

The integration of graphene-based ultracapacitors into test WrightBus double deck buses enables a 36% fuel saving compared to a UK based EuroVI diesel bus. It also adds at least another 3 passengers to the capacity of these buses compared to a lithium battery-based hybrid equivalent.

Skeleton Technologies will supply the ultracapacitors for both single and double decker buses over the next five years to reduce CO 2 emissions in city centres and reduce maintenance costs. Whilst lithium battery systems may last around 4 to 5 years, the 1 million cycles of the ultracapacitors will provide an estimated lifetime of 12 to 15 years.

“Skeleton Technologies’ ultracapacitors provide a major fuel saving and will reduce maintenance with a long lifetime. It is also a plug and play solution adding safety and reliability to the vehicles,” said Mark Nodder, Chairman and CEO of the Wrights Group.

“Ultracapacitors have been integrated into buses before but the energy and power densities of our ultracapacitors have been key in the selection process.  We are excited to be part of the CO 2 reduction drive in cities onboard with Wrightbus,” said Taavi Madiberk, CEO of Estonia-based Skeleton Technologies, which has built a high volume manufacturing plant in Germany.

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