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Iridium could slow down electrolyser run-up

Iridium could slow down electrolyser run-up

Vulcano plot of different metal oxides for oxygen evolution.
Fig. 1: Vulcano plot of different metal oxides for oxygen evolution, according to [2] © Trasatti S., Electrocatalysis by oxides – attempt at a unifying approach, J. Electroanal. Chem. 1980; 125-131.

Although hydrogen produced from renewable energies has been under discussion for decades as a possible alternative to fossil fuels, it has so far only played a minor role. Recently, however, there have been signs of change, so that “green” hydrogen could gain momentum in the energy sector: More and more powerful electrolysis systems are available, and the prices for these systems are falling. If, however, PEM electrolysers were to be added on a large scale, iridium could become scarce and thus more expensive and thus stand in the way of a reduction in the already considerable investment costs.

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Effect of hydrogen on materials

Effect of hydrogen on materials

Stress-strain curves of hollow samples filled with hydrogen or nitrogen, with an internal pressure of 70 bar, tested at a draw-off rate of 3.5 µm/min.
Stress-strain curves of hollow samples filled with hydrogen or nitrogen, with an internal pressure of 70 bar, tested at a draw-off rate of 3.5 µm/min.

Atomic hydrogen partly diffuses into materials during production and operation. If this results in degradation of the material properties, the term hydrogen embrittlement is used. The Fraunhofer IWM has set itself the task of better understanding and mastering such chemical processes and their consequences. For this purpose, a new laboratory for material qualification for hydrogen applications has now been set up.

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With Oceanwings to the Olympic Games

With Oceanwings to the Olympic Games

Central location not far from the Elbe Philharmonic Hall
Central location not far from the Elbe Philharmonic Hall

Only slowly, the Energy Observer fought its way up the Elbe to Hamburg against the tidal ebb. The Hanseatic city in which the solar hydrogen ship moored on 28 April 2019 was the 35th station on the six-year circumnavigation of the world. A total of 101 locations in 50 countries are to be visited.

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Realignment of the IAA

Realignment of the IAA

Toyota and its Mirai will be missing in 2019 at the IAA
Toyota and its Mirai will be missing in 2019 at the IAA

The 68th International Motor Show has to get itself re-organised. Two years ago, the organising German Association of the Automotive Industry (VDA) already had to contend with numerous cancellations by automobile manufacturers because quite a few preferred a presence at the Consumer Electronics Show in the USA to an exhibition in Frankfurt (see H2-international issue Jan. 2018).

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Green ammonia in the tank

Green ammonia in the tank

Functionality Membrane/SSAS
Functionality Membrane/SSAS

The research alliance Campfire wants to decarbonize the maritime sector with the production of green ammonia and its application in emission-free drives.

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