Hydrogen can be stored and transported in large quantities for an unlimited time, making it an important contributor to a renewable energy supply 24/7. To combine knowledge, expertise and reach, ees Europe, Europe’s largest and most international exhibition for batteries and energy storage systems, and HYDROGEN DIALOGUE of NürnbergMesse are entering into a strategic partnership.

ees Europe 2025: storage industry meets battery research

Starting in 2026, HYDROGEN DIALOGUE will be held in Munich as an annual side event as part of The smarter E Europe, Europe’s largest exhibition alliance for the energy industry. HYDROGEN DIALOGUE will already be represented this year with its own exhibition presence and a block of lectures as part of the Green Hydrogen Forum in Munich. ees Europe is part of The smarter E Europe and will take place from 7 to 9 May. The organisers expect more than 3,000 exhibitors and over 110,000 visitors at Messe München.

Strenghten the position of Bavaria as hydrogen location

This cooperation strengthens Bavaria’s position as the leading hydrogen location in Germany and creates the ideal platform for the exchange of expertise, innovations and technologies. In addition to its own presence at the trade fair and a series of lectures at the Green Hydrogen Forum, HYDROGEN DIALOGUE offers thematically guided tours of the fair focusing on ‘Production & Storage of Hydrogen’ and ‘Mobility with H2’.

From 2026, HYDROGEN DIALOGUE will be present at The smarter E Europe in a variety of ways with a wide reach.
• The HYDROGEN DIALOGUE Summit with its high-profile networking format will take place over two days at the International Congress Center Messe München (ICM) parallel to the exhibition.
HYDROGEN DIALOGUE will be prominently represented with a joint stand in the ‘Green Hydrogen Forum & Expo’ exhibition area at ees Europe.
During The smarter E Europe, HYDROGEN DIALOGUE will offer guided tours on the subject of hydrogen, invite international hydrogen delegations to Munich and help shape the specialist programme of the Green Hydrogen Forum.

Organisers see win-win situation

For Sabine Kloos, Exhibition Director of ees Europe, the new partnership is a clear win-win situation: ‘We are very pleased to have NürnbergMesse on board with HYDROGEN DIALOGUE in the future. We have a common goal: we want to help make the vision of a climate-neutral world a reality. Our new partner is contributing its exhibitor and visitor contacts and important partner networks to strengthen and advance the presence of hydrogen as a topic of the future at The smarter E Europe.’

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Jasmin Rutka, Exhibition Director of HYDROGEN DIALOGUE, emphasised the strategic aspects: ‘The integration of HYDROGEN DIALOGUE into The smarter E Europe is a strategically sensible development to ensure that our event remains internationally competitive in the long term. The partnership is our response to the current momentum in the hydrogen industry, and together we are strengthening Bavaria’s position as an international hydrogen hub. With the existing Green Hydrogen Forum & Expo and the 16,000 hydrogen enthusiasts from The smarter E Europe, as well as our high-profile summit and international network, we are jointly promoting a successful ramp-up of the hydrogen economy.’

ees Europe and the concurrent events Intersolar Europe, Power2Drive Europe and EM-Power Europe will take place from May 7 to 9, 2025 at Messe München as part of The smarter E Europe, Europe’s largest exhibition alliance for the energy industry. (hcn)





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Storing energy cost-effectively and producing hydrogen – that’s what a novel zinc-based battery can do. Initial tests have shown an efficiency of 50 percent for electricity storage and 80 percent for hydrogen production with a predicted lifespan of ten years, according to a Fraunhofer IZM press release.

The aim of the Zn-H2 research project is to develop an electrically rechargeable hydrogen storage system that can store energy in the form of metallic zinc and provide electricity and hydrogen on demand.

Easily available and recyclable materials

Unlike conventional lithium batteries, zinc storage systems are much cheaper, use readily available raw materials (steel, zinc, potassium hydroxide) and are recyclable, IZM describes the advantages of the material used.

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Based on already known solutions in the battery field with zinc anode, the researchers combined this technology with alkaline water electrolysis. In this way, the new energy storage system could also enable the production of hydrogen.

Overall efficiency of electricity storage twice as high as power-to-gas

“During charging, water in the battery oxidises to oxygen, and at the same time zinc oxide is reduced to metallic zinc,” explains Robert Hahn from Fraunhofer IZM. “When the storage cell is discharged as needed, the zinc is converted back into zinc oxide. The water is in turn reduced so that hydrogen is generated and released.

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This creates a unique combination of battery and hydrogen production with an overall electricity storage efficiency of 50 per cent, which means we outperform the alternative and currently favoured power-to-gas technology twice over.” Since the material costs are less than one tenth of a lithium battery, this opens up an economically attractive perspective for storing green energy.

Zn2H2 GmbH

This is how the system works.

Successful laboratory tests

The researchers have already been able to prove the basic principle of the new system in the laboratory and examined the efficiency and stability of the charging cycles on the basis of individual cells – with success: with realistic use during seasonal dark breaks, but also with daily use as solar storage, the catalysts would have a service life that would allow operation for more than ten years. However, the system still has to go through several stages of up-scaling before it is finally suitable for industrial use.

Demonstrator to be built by the end of 2023

A demonstrator is to be built by the end of the year, and its operation will be researched in a test stand. Finally, eight cells with a capacity of approximately 12 volts and 50 ampere-hours are to be electrically connected. The researchers are demonstrating galvanic deposition as a cost-effective production technique for the large-scale manufacture of the bifunctional catalyst: the reproducibility of the deposition will be examined in advance with tests. (kw/mfo)





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