Technology & Applications Archive | X2E Services & Engineering GmbH https://x2e-se.de/en/tag/technology-applications Wasserstoff. Modular. Effizient. Emissionsfrei. Mon, 03 Nov 2025 14:18:58 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 https://x2e-se.de/wp-content/uploads/2025/07/Favicon-150x150.png Technology & Applications Archive | X2E Services & Engineering GmbH https://x2e-se.de/en/tag/technology-applications 32 32 Does hydrogen make sense for my company? https://x2e-se.de/en/advisor/does-hydrogen-make-sense-for-my-company Fri, 04 Jul 2025 13:39:32 +0000 https://x2e-se.de/nicht-kategorisiert/does-hydrogen-make-sense-for-my-company Hydrogen is considered a key technology for a climate-friendly future. But before you invest in hydrogen solutions, you should check whether hydrogen is really suitable for your company. Hydrogen can be used as an energy source or raw material in a variety of ways - from propulsion to heat to production. Whether the investment is […]

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Hydrogen is considered a key technology for a climate-friendly future. But before you invest in hydrogen solutions, you should check whether hydrogen is really suitable for your company. Hydrogen can be used as an energy source or raw material in a variety of ways – from propulsion to heat to production. Whether the investment is worthwhile depends on various factors.

Checklist: Is hydrogen a good fit for my company?

  1. Energy demand and profile
  • Does your company require large amounts of energy?
  • Are there ways to replace fossil fuels with hydrogen (e.g. gas heating, diesel generators)?
  • Is your energy requirement flexible or constant over time?
  1. Technological requirements
  • Does your company already have technology that can be operated or adapted with hydrogen?
  • Is there suitable infrastructure on site (e.g. storage facilities, refueling facilities)?
  • Can you invest in the installation of new systems?
  1. Economic efficiency
  • Are the costs of hydrogen (purchase or in-house production) competitive compared to conventional energy sources?
  • Are there funding programs or government incentives for hydrogen projects?
  • What are the long-term savings on CO₂ levies and energy costs?
  1. Environmental and sustainability goals
  • Would you like to reduce your company’s CO₂ emissions?
  • Is sustainability an important part of your corporate strategy?
  • How important is the future viability and innovative strength of your company to you?
  1. Availability and security of supply
  • Is the supply of hydrogen guaranteed in your region?
  • Can you count on reliable partners for delivery or production?
  • Are there already regional hydrogen infrastructures or pilot projects?
  1. Industry and application reference
  • Are there proven applications for hydrogen in your industry?
  • Are competitors already using hydrogen technologies?
  • Can you open up new business areas or innovations with hydrogen?

Conclusion

Hydrogen can be a forward-looking opportunity for companies, especially if the energy demand is high, the environmental goals are clear and the willingness to invest is there. Use the checklist to realistically assess your starting position and decide whether hydrogen could be a sensible addition or alternative for your company.

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]]> Investing in hydrogen - opportunities and risks https://x2e-se.de/en/advisor/investing-in-hydrogen-opportunities-and-risks Fri, 04 Jul 2025 13:34:17 +0000 https://x2e-se.de/nicht-kategorisiert/investing-in-hydrogen-opportunities-and-risks Whether industry, mobility or energy storage - the importance of and demand for hydrogen will increase rapidly in the coming years. For companies, investors and project developers, entering the hydrogen economy offers enormous opportunities - but also challenges. In this article, we shed light on the economic potential, highlight relevant areas of investment and assess […]

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Whether industry, mobility or energy storage – the importance of and demand for hydrogen will increase rapidly in the coming years. For companies, investors and project developers, entering the hydrogen economy offers enormous opportunities – but also challenges.

In this article, we shed light on the economic potential, highlight relevant areas of investment and assess the risks that need to be considered.

Why hydrogen?

With the global goal of climate neutrality, CO₂-free technologies are increasingly coming into focus. Hydrogen enables decarbonization where electrification reaches its limits – for example in the steel industry, chemical production or heavy goods transport. According to the EU Commission and the IEA, global hydrogen demand will increase 6 to 10-fold by 2050. The National Hydrogen Strategy also anticipates massive expansion in Germany – especially for green hydrogen.

Investment opportunities

Generation & Infrastructure

The investment opportunities along the hydrogen value chain are diverse. Particularly in the area of production and infrastructure, there are opportunities in the construction and operation of electrolysers powered by renewable electricity. There are also technologies for the storage, compression and distribution of hydrogen as well as the construction of entire H₂ hubs, energy parks or offshore projects.

Technology & components

At a technological level, developments in fuel cell technology, the production of hydrogen filling stations, valves and digital control systems are in demand. Automation and digitalization are also playing an increasingly important role.

Applications & markets

New application markets are emerging through the conversion of industrial operations, particularly in energy-intensive sectors such as steel, glass and chemicals. In the transport sector, hydrogen-powered trucks, trains, ships and even airplanes are increasingly coming onto the market. At the same time, hydrogen is being integrated into energy systems, for example through power-to-gas applications or intelligent sector coupling.

Subsidies as a catalyst

The investment landscape is flanked by extensive public funding programs, e.g:

  • IPCEI Hydrogen (Germany & EU)
  • KfW promotional loans & investment grants
  • Clean Hydrogen Partnership (EU)
  • Innovation fund and national transformation programs

These subsidies reduce market risks and accelerate the profitability of new projects.

Risks and challenges

Despite all the potential, however, the hydrogen economy remains fraught with challenges. From a technological perspective, these include the still high production costs – especially for green hydrogen – complex plant technology in some cases and a lack of standardization. From an economic perspective, there are risks due to the dependency on the price of electricity and subsidies, as well as uncertain economies of scale in the development of demand. International competition, particularly with cheap imported hydrogen, must also be taken into account. In regulatory terms, the market is in a constant state of flux – EU directives, national legislation and CO₂ pricing have a direct impact on projects and business models. The timely development of a suitable infrastructure will also be decisive in determining whether potential players gain access to the market at all.

Conclusion

In summary, it can be said that investments in hydrogen offer great opportunities – for climate protection, for technological innovations and for opening up new markets. However, as with any future technology, the same applies here: Success requires sound planning, technical know-how and a good understanding of market and funding structures.

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]]> Hydrogen storage and transportation https://x2e-se.de/en/advisor/hydrogen-storage-and-transportation Fri, 04 Jul 2025 11:07:31 +0000 https://x2e-se.de/nicht-kategorisiert/hydrogen-storage-and-transportation In order for hydrogen to be used as an energy carrier on a large scale, it must be stored and transported efficiently - whether from the production site to industrial plants, to filling stations or to the energy infrastructure. Various technologies are used for this, each of which has its own advantages and disadvantages. In […]

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In order for hydrogen to be used as an energy carrier on a large scale, it must be stored and transported efficiently – whether from the production site to industrial plants, to filling stations or to the energy infrastructure. Various technologies are used for this, each of which has its own advantages and disadvantages. In this article, we present the most important methods: Pressurized tanks, liquid hydrogen, LOHC and pipelines.

Pressure tanks – compact and flexible

One of the most widely used forms of storage is compressed gas storage. Hydrogen is stored in specially reinforced containers at high pressure – usually at 350 to 700 bar.

Advantages:

  • Technologically proven and safe
  • Quickly available (e.g. for mobile applications such as fuel cell vehicles)
  • Modular use, also for decentralized supply

Areas of application: Hydrogen filling stations, mobile applications, transportation by truck

Challenge: The energy required for compression is relatively high, the volume remains larger than with liquid hydrogen despite compression.

Liquid hydrogen – high energy density through liquefaction

Liquid hydrogen (LH₂) is produced by cooling hydrogen to -253 °C, whereby the gas changes to a liquid state. This method enables particularly compact storage with a high energy density.

Advantages:

  • High energy density
  • Ideal for long-distance transportation and applications with high energy requirements (e.g. aviation, space travel)

Areas of application: Large filling stations, aviation, shipping, intercontinental transportation

Challenge: The extremely low temperature requires complex insulation and causes high energy losses during liquefaction.

LOHC – Liquid hydrogen carriers for safe storage

LOHC stands for Liquid Organic Hydrogen Carriers – liquid organic carrier substances that can chemically bind hydrogen. The hydrogen is incorporated into the carrier material (hydrogenation) and released again if required (dehydrogenation).

Advantages:

  • Storage and transportation at ambient pressure and temperature
  • Use of existing infrastructure (e.g. tank trucks, tank farms)
  • Low risk of explosion

Areas of application: Long-distance transportation, stationary energy storage, import solutions

Challenge: Releasing the hydrogen requires additional energy and special equipment.

Hydrogen pipelines – infrastructure for the future

Hydrogen pipelines are ideal for large-scale transportation over longer distances – either newly built or by converting existing natural gas pipelines.

Advantages:

  • Continuous supply to large customers (industry, chemicals, energy)
  • High transport capacity
  • Low ongoing operating costs

Areas of application: Industrial sites, hydrogen networks, cross-border transportation

Challenge: Establishing a suitable infrastructure, material requirements due to hydrogen embrittlement

Conclusion

The storage and transportation of hydrogen are crucial for a functioning hydrogen economy. Depending on the application, different technologies are used – from flexible pressure tanks and compact liquid hydrogen systems to large-volume pipelines and safe LOHC solutions.

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]]> How does a fuel cell work? https://x2e-se.de/en/advisor/how-does-a-fuel-cell-work Fri, 04 Jul 2025 09:59:18 +0000 https://x2e-se.de/nicht-kategorisiert/how-does-a-fuel-cell-work The fuel cell is a key technology for the use of hydrogen as a clean energy source - whether in cars, trains, buildings or industry. But how exactly does a fuel cell work? In this article, we explain how it works and the advantages of this fascinating technology. Basic principle: electricity from hydrogen and oxygen […]

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The fuel cell is a key technology for the use of hydrogen as a clean energy source – whether in cars, trains, buildings or industry. But how exactly does a fuel cell work? In this article, we explain how it works and the advantages of this fascinating technology.

Basic principle: electricity from hydrogen and oxygen

A fuel cell converts the chemical energy of hydrogen directly into electrical energy – without combustion, almost silently and without harmful emissions. The only “waste product” is water vapor. The energy generated can be used directly to drive an electric motor, to supply electricity or to generate heat.

Structure and function of a fuel cell

A single fuel cell essentially consists of three components:

  • Anode (negative pole)
  • Cathode (positive pole)
  • Electrolyte membrane separating the two sides

This is how the process works:

  1. Supply of hydrogen: Hydrogen gas (H₂) is supplied at the anode. There, catalysts split the hydrogen molecules into protons (H⁺) and electrons (e-).
  2. Separation of protons and electrons:
    • The protons migrate through the electrolyte membrane to the cathode.
    • The electrons cannot pass through the membrane – instead they flow via an external circuit to the cathode, generating an electric current.
  3. Reaction with oxygen: The electrons, protons and the oxygen (O₂) supplied from the air come together again at the cathode. Water (H₂O) is produced – in the form of water vapor.

Types of fuel cells

There are different types of fuel cells, depending on the application and the technology used:

  • PEM fuel cell (Proton Exchange Membrane): Frequently used in vehicles and for mobile applications. It works at low temperatures and reacts quickly to load changes.
  • SOFC (Solid Oxide Fuel Cell): High-temperature fuel cell, particularly efficient for stationary applications such as power plants or building supply.
  • AFC, MCFC, PAFC: Other types with special areas of application, e.g. in aerospace or industry.

Advantages of fuel cell technology

  • Zero emissions: Only water vapor is produced – no CO₂, particulate matter or NOx emissions.
  • High efficiency: Significantly more efficient than classic combustion engines.
  • Quiet operation: No moving parts such as pistons or turbines.
  • Versatility: Suitable for vehicles, buildings, emergency power supply and industrial applications.

Conclusion

The fuel cell enables the direct use of hydrogen – efficiently, quietly and emission-free. This makes it one of the key technologies for the energy transition and for a climate-friendly future.

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]]> How is hydrogen produced? https://x2e-se.de/en/advisor/how-is-hydrogen-produced Fri, 04 Jul 2025 08:59:23 +0000 https://x2e-se.de/nicht-kategorisiert/how-is-hydrogen-produced Hydrogen is considered a key technology for the energy transition and plays a central role in the decarbonization of industry, mobility and energy supply. But how is hydrogen actually produced? In this article, we will introduce you to the three most important processes: Electrolysis, steam reforming and pyrolysis. Electrolysis - hydrogen from electricity and water […]

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Hydrogen is considered a key technology for the energy transition and plays a central role in the decarbonization of industry, mobility and energy supply. But how is hydrogen actually produced? In this article, we will introduce you to the three most important processes: Electrolysis, steam reforming and pyrolysis.

Electrolysis – hydrogen from electricity and water

Electrolysis is a climate-friendly process for producing hydrogen. Water (H₂O) is broken down into its components hydrogen (H₂) and oxygen (O₂) using electrical energy. The process takes place in an electrolyser in which two electrodes – anode and cathode – are separated by a conductive liquid (electrolyte).

Depending on the type of electrolyzer, a distinction is made between different technologies, including:
– Alkaline electrolysis (AEL)
– Proton exchange membrane electrolysis (PEM)
– High-temperature electrolysis (SOEC)

Electrolysis is particularly sustainable if the electricity required comes from renewable sources such as wind or solar energy. In this case, we speak of green hydrogen, which is produced almost CO₂-free.

Steam reforming – hydrogen from natural gas

Steam methane reforming (SMR) is currently the most commonly used process for hydrogen production worldwide. In this process, natural gas (mainly methane) is converted into hydrogen and carbon monoxide with steam under high pressure and at temperatures of around 800-900 °C in a reactor.

In a second step, the so-called water-gas shift reaction, the resulting carbon monoxide is converted with further water vapor to carbon dioxide (CO₂) and additional hydrogen.

One disadvantage of this process is the high CO₂ emissions – around 9 to 10 tons of CO₂ per ton of hydrogen. However, if the resulting CO₂ is captured and stored (carbon capture and storage, CCS), it is referred to as blue hydrogen.

Pyrolysis – hydrogen from methane without CO₂

Methane pyrolysis is an innovative process in which methane is thermally split into hydrogen and solid carbon – without producing any CO₂:
This process takes place at temperatures of around 1000 °C, usually in a special reactor environment, e.g. a plasma reactor. The big advantage: no gaseous CO₂ is produced, but solid carbon, which can be used as a building material or in industry, for example.

Hydrogen from pyrolysis is also known as turquoise hydrogen. The technology is still largely in the development stage, but offers great potential for a low-carbon hydrogen economy.

Conclusion

Hydrogen can be produced in different ways – from climate-friendly electrolysis to steam reforming, which dominates today, to the promising pyrolysis process.

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]]> Electrolysis: producing hydrogen from water https://x2e-se.de/en/advisor/electrolysis-producing-hydrogen-from-water Tue, 18 Jun 2024 09:32:18 +0000 https://x2e-se.de/nicht-kategorisiert/electrolysis-producing-hydrogen-from-water The electrolysis of water is a promising method for obtaining hydrogen. Water (H₂O) is broken down into its components, hydrogen (H₂) and oxygen (O₂), using electrical energy. This process offers an environmentally friendly alternative to fossil fuels and plays a key role in sustainable energy supply. How electrolysis works At the heart of electrolysis are […]

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The electrolysis of water is a promising method for obtaining hydrogen. Water (H₂O) is broken down into its components, hydrogen (H₂) and oxygen (O₂), using electrical energy. This process offers an environmentally friendly alternative to fossil fuels and plays a key role in sustainable energy supply.

How electrolysis works

At the heart of electrolysis are two electrodes, an anode and a cathode, which are immersed in an aqueous solution. When an electrical voltage is applied, the oxidation of water to oxygen takes place at the anode, while the reduction of water to hydrogen takes place at the cathode. The reaction equations are as follows: Anode (oxidation): 2H₂O → O₂ + 4H⁺ + 4e- Cathode (reduction): 4H₂O + 4e- → 2H₂ + 4OH- The hydrogen produced is collected as a gas at the cathode. The main advantages of electrolysis are the high purity of the hydrogen produced and the possibility of using surplus renewable energy. Especially when combined with solar or wind power, electrolysis can be operated almost emission-free.

The challenges of electrolysis

There are a number of challenges to overcome: The energy efficiency of electrolysis is around 60-80%, which means that a considerable amount of the electrical energy used is lost in the form of heat. In addition, the costs of electrolysers and the electrical energy required are currently still relatively high, which impairs the competitiveness of green hydrogen.

Future prospects

However, advances in materials science and economies of scale could improve economic efficiency in the near future. Research is focusing in particular on the development of new electrode materials and electrolyte systems to increase efficiency and reduce operating costs. In summary, electrolysis is a promising technology for environmentally friendly hydrogen production. It plays a crucial role in sustainable energy supply and could be a central pillar of the global energy transition in the future.

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