Australia’s first fuel cell bicycle

The Hy-Cycle

UNSW researchers have built an Australian-first bicycle that can take riders up to 125 kilometres on a single battery charge and $2 of hydrogen.

The Hy-Cycle, created by a team including Associate Professor Kondo-Francois Aguey-Zinsou and Technical Officer Paul Brockbank from the School of Chemical Engineering, is powered by a hydrogen fuel cell.

A low-cost, sustainable transport option

The fuel cell provides electrical assistance with pedalling, enabling the rider to easily travel long distances or up hills.

This could make the Hy-Cycle a low-cost, sustainable transport option.

"Cities such as London and Paris are trying to provide fleets of bicycles that people can hire for a few hours a day to commute to and from work," Aguey-Zinsou says. "This is a key market for the Hy-Cycle."

Hydrogen as a clean and safe energy

The Hy-Cycle’s main innovation is the demonstration of hydrogen as a clean and safe energy.

"What we've been trying to develop in my lab is a new way to store hydrogen in a very compact fashion," Aguey-Zinsou explained.

"Hydrogen storage can be a problem because it's a light gas, but with the material and the technology we've developed you can actually make it safe to store and use."

The Hy-Cycle

How does it work?

Hydrogen for the Hy-Cycle is carried in a 2.5-kilogram canister that sits adjacent to the pedals. The canister feeds the fuel cell, which is located under the seat and continuously recharges a Lithium-ion battery.

A standard metal hydride inside the canister enables safe, user-friendly storage of the hydrogen.

One kilogram of the standard metal hydride is capable of storing 100 litres of hydrogen, but Aguey-Zinsou and colleagues at the Material Energy Research Laboratory in nanoscale (MERLin) at UNSW are now developing borohydrides that could store the same amount of hydrogen using just 50 grams of storage material.

Hydrogen for the Hy-Cycle can be produced with as little as 100 millilitres of water. The water is split into its elements – oxygen and hydrogen – and the fuel cell recombines the hydrogen with oxygen to produce electricity.

However, Aguey-Zinsou envisions a future where riders could purchase replacement canisters from a network of distribution points, rather than needing to produce hydrogen.

The researchers believe hydrogen power should be afforded the same opportunity to shine as other renewable energy technologies, such as solar.

Future opportunities

The Hy-Cycle"I think Australia has been missing a lot of great opportunities through its focus on solar, when the reality is we have a lot of other renewable capabilities that we can take and make happen. We should not be waiting to harness hydrogen fuel cell technology when it is ready now," Aguey-Zinsou says.

"Hydrogen fuel cell technology is very exciting because it means we could have unlimited, clean energy supplies for our children."

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