How to Power a Bus on Formic Acid
( Eindhoven University of Technology) … Their self-built system comprises an electric bus that is hooked up to a small trailer – which the students have christened ‘REX’ – in which formic acid is converted into electricity. The benefits of using formic acid are that it is sustainable, CO2-neutral, safe and liquid.
Hydrozine is the energy carrier’s official name. It’s 99% formic acid with a performance enhancing agent. What is striking is that Team FAST, consisting of 35 students, developed this so far unknown fuel all by itself. At the beginning of 2016 they presented an initial scale model that illustrated how it works. After another twenty months of hard work, they now have a system that is 42,000 times stronger and is capable of 25kW power.
In the trailer that was built by the team hydrozine is split into hydrogen and CO2. The hydrogen is then used to produce electricity that powers a city bus of the Eindhoven company VDL. The team calls the trailer a ‘range extender’, REX for short, because the trailer expands the existing range of the bus as a standalone component. The team is still running final tests with the aim of the bus actually operating by the end of this year.
The benefits of hydrozine are many. It is a cheap and safe alternative to the transport of hydrogen that normally requires large tanks and high pressure. The CO2 produced in splitting the hydrozine is also used in the production process, which results in zero net CO2. Hydrozine has four times as much energy density as a battery and since it is a liquid, very few modifications will be required to the current infrastructure of filling stations. READ MORE / MORE / VIDEO