Hydrogen fuel put to the test

Sep 27, 2011
Filling up, with hydrogen fuel (image courtesy of ITM Power)

National Physical Laboratory has developed a suite of analytical methods to detect trace-level impurities in hydrogen fuel that can affect the performance of hydrogen fuel cells – a potentially carbon-free power source for vehicles.

Hydrogen-powered vehicles emit nothing more harmful than water at the point-of-use, so they have great potential to reduce our dependence on fossil fuels and therefore help combat climate change. There is, however, a pressing industrial need for accurate and traceable measurements of the purity of , as even parts-per-billion levels of some can severely reduce the power output of fuel cells.

The suite of methods developed at NPL, in a collaborative project with ITM Power, Air Products and the UK Hydrogen and Fuel Cell Association, will enable industry to ensure hydrogen dispensed at refuelling stations meets required quality specifications.

The methods allow the measurement of a range of impurities such as oxygen, carbon monoxide and carbon dioxide, as well as less stable species such as sulphur compounds and formaldehyde that require specialised sampling and analysis. Tests found that the methods used could detect each impurity to the levels set in the International Standards being developed for the specification of hydrogen fuel (ISO 14687-2 and ISO 14687-3).

The project also tested the suitability of hydrogen fuel produced via electrolysis, by testing samples provided by ITM Power's electrolyser systems, which produce hydrogen by splitting water molecules using electricity generated from renewable sources. The results showed that fuel produced in this way does not require any further purification, other than the relatively inexpensive removal of water and oxygen.

Dr Andrew Brown, the scientist responsible for hydrogen purity projects at NPL, said: "The success of the developed by NPL provides UK industry with a much needed source of quality assurance for measurements of hydrogen purity. The results of this collaborative project bode well for the future of hydrogen as a fuel source, as leading UK companies such as ITM Power strive to develop innovative technologies to help make hydrogen refuelling stations as ubiquitous as petrol stations are today."

Graham Cooley, CEO of ITM Power, commented: "ITM are committed to achieving the right hydrogen purity for its customers. NPL is the best placed organisation in the UK to develop appropriate gas analysis and provide independent assessment. We look forward to using the results across our product portfolio."

Explore further: Future solar panels

More information: More on NPL's work on hydrogen purity analysis and storage.

Provided by National Physical Laboratory

5 /5 (2 votes)
add to favorites email to friend print save as pdf

Related Stories

Putting the fuel in fuel cells

Sep 12, 2006

Ammonia borane holds promise as a chemical compound to store and release hydrogen in fuel cell-powered vehicles – and it appears stable enough to offset some safety concerns. These findings were presented by Pacific Northwest ...

Hydrogen-powered ice resurfacer promoted

May 30, 2007

A U.S. Department of Energy-funded fuel-cell-powered ice resurfacer is touring ice rinks across the United States, promoting use of hydrogen fuel cells.

NREL, Xcel energy sign wind to hydrogen research agreement

May 08, 2006

The U.S. Department of Energy's, National Renewable Energy Laboratory and Xcel Energy recently signed a cooperative agreement for an innovative "wind to hydrogen" research, development and demonstration project. Researchers ...

Recommended for you

Future solar panels

13 hours ago

Conventional photovoltaic technology uses large, heavy, opaque, dark silicon panels, but this could soon change. The IK4-Ikerlan research centre is working with the UPV/EHU-University of the Basque Country ...

Storing solar energy

Sep 01, 2014

A research project conducted by Leclanché S.A., the Ecole Polytechnique Federale de Lausanne (EPFL), Romande Energie and with the financial support of the Canton of Vaud could bring a real added value in ...

Scientists get set for simulated nuclear inspection

Sep 01, 2014

Some 40 scientists and technicians from around the world will descend on Jordan in November to take part in a simulated on-site inspection of a suspected nuclear test site on the banks of the Dead Sea.

User comments : 0