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Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
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Rare-Earth Metal-Based Materials for Hydrogen Storage: Progress, Challenges, and Future Perspectives.

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Rare-earth-metal materials show great promise for efficient hydrogen storage, advancing clean energy technologies. Further research and development are crucial for overcoming challenges and enabling widespread adoption for a sustainable hydrogen economy.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Clean Energy Technologies

Background:

  • Rare-earth-metal-based materials are leading candidates for advanced hydrogen storage.
  • Hydrogen storage is critical for the development of clean energy technologies and a sustainable hydrogen economy.

Purpose of the Study:

  • To provide a comprehensive review of rare-earth-metal-based materials for hydrogen storage.
  • To elucidate fundamental principles, synthesis methods, characterization techniques, and enhancement strategies.
  • To highlight challenges and future prospects for these materials.

Main Methods:

  • Review of fundamental principles governing hydrogen storage mechanisms (chemisorption, physisorption, hydride formation).
  • Analysis of synthesis methods, characterization techniques, and performance enhancement strategies (rational design, nanostructuring, surface modification, catalytic doping).
  • Critical assessment of the current state-of-the-art in rare-earth-metal hydrogen storage.

Main Results:

  • Rare-earth metals possess unique electronic structures and hydrogen affinity, enabling diverse storage mechanisms.
  • Significant enhancements in hydrogen storage capacity, kinetics, and thermodynamics are achievable through advanced material design and modification.
  • The potential for revolutionizing hydrogen storage with these materials is immense.

Conclusions:

  • Rare-earth-metal-based materials offer a promising pathway towards high-performance hydrogen storage solutions.
  • Addressing challenges related to cost, scalability, and long-term stability is essential for widespread adoption.
  • Multidisciplinary research integrating materials science, nanotechnology, and computational modeling is key to accelerating the transition to a sustainable hydrogen economy.