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Electrolysers range from small, appliance-size products to large, multi-megawatt-scale production facilities. In all cases quality and safety must be ensured. One of the major concerns when designing, building, operating or even talking about a hydrogen system is safety. Known for its high flammability range and small molecular size, hydrogen can easily leak, forming an explosive mixture if adequate measures are not taken. Taking adequate measures, however, can be a straightforward process if attention is paid to safety from the design on.

Proton exchange membrane (PEM) electrolysers and PEM fuel cells rely on platinum group metal (PGM) catalysts, notably platinum and iridium. Many see this as a challenge, given the rarity and value of the PGMs. In fact, if used efficiently, these metals will actually facilitate the development of a resilient supply chain. To understand why this is, let’s look at the PGM landscape and the implications for PEM technologies in more detail.

Among the recent entrants to the rapidly expanding universe of electrolyser manufacturers, Hystar is shining particularly brightly. Combining knowledge from the fuel cell industry with electrolyser technology, the Norwegian company claims to have developed the world’s most efficient PEM electrolyser. With market-ready solutions, Hystar is now gearing up to fully automate its production process and ramp up production capacity to gigawatt scale.

Hydrogen is a key element for the decarbonisation of industry, if low-emission production and logistics follow. However, so far there has been a deplorable lack of binding EU-wide sustainability criteria that cover the entire value chain. A certification assists companies to establish a position in the emerging market for hydrogen from renewables and to prepare for future requirements.

Proton exchange membrane (PEM) electrolyzers can produce hydrogen from water and renewable electricity. They also typically rely on one of the rarest materials on earth to function: iridium. To scale this technology to meet rising demand for clean energy, the hydrogen community must develop solutions to address this scarcity problem.

Central cooling systems for large-scale green hydrogen production can be based on wet or dry cooling. But there also exist hybrid solutions. This article discusses three such solutions and considers the factors influencing the selection of cooling technology.

Water is essential for the production of green hydrogen. As the market matures, crucial questions about the use of water are starting to arise. How much water is needed? What quality is sufficient? Where should the water come from? Let’s shed some light on these fundamental questions.

Building on its expertise in polymer chemistry, Evonik has propelled itself to the forefront of innovation in gas separation membranes. Recently, the chemical giant has expanded its portfolio of high-performance membranes to drive the transition of today’s conventional energy supply to a sustainable gas economy of tomorrow. By developing the SEPURAN^® Noble membrane for hydrogen recovery and the DURAION^® membrane for green hydrogen production, the company is intensifying its efforts to drive sustainability through technological innovation.

Hydrogen plays a central role in the energy transition, and existing natural gas infrastructure is to be used for its transport and storage. TÜV SÜD assesses the integrity and service life of the pipelines intended for this purpose using fracture mechanics calculations. In doing so, the experts take into account the embrittlement of steel and factors such as crack initiation and crack growth under hydrogen atmospheres