Special Issue "Metals in Hydrogen Technology"

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 30 November 2018

Special Issue Editor

Guest Editor
Dr. Claudio Pistidda

Department of Nanotechnology, Helmholtz-Zentrum Geesthacht, Germany
Website | E-Mail
Interests: material science; hydrogen technology; renewable energy; mechanochemistry

Special Issue Information

Dear Colleagues,

The world transition to a sustainable and reliable carbon free economy is the greatest challenge of the 21st century. The growing environmental awareness of climate changes and health diseases caused by the massive use of fossil fuels supplies, calls for immediate and radical changes. In view of long-term energy provision solution, the only available alternative to the production of energy from fossil fuels is to harvest it from renewable energy sources, such as sunlight, wind, tide and biomasses. Because of their intermittent nature and uneven availability on Earth, a complete exploitation of renewable energy sources is difficult. Therefore, energy storage media are needed. Hydrogen is widely considered as a key element for a potential energy solution. The possibility to produce hydrogen utilizing renewable energy sources and to store in it energy, presents multiple advantages. On the one hand, energy will be harvested and stored nearly without the production of harmful pollutants, and on the other hand the security of energy supply will be granted. In addition, the implementation of hydrogen as “energy carrier” is expected to result in an effective and synergic utilization of renewable energy sources. In order to achieve these aims, hydrogen storage technology is a key roadblock towards the use of H2 as an energy carrier. The shift from conventional fuels to hydrogen triggers great challenges that must be addressed quickly. Although, in the last decades enormous progress has been made in the development of hydrogen storage materials and hydrogen infrastructures, a lot still has to be done to efficiently support such epochal transition. In this regard, the study of interaction between metals, metal alloys and metal-based compounds and hydrogen is of primary importance. In fact, metals are essential components of materials for hydrogen production, hydrogen storage, and the entire infrastructure connected with the hydrogen distribution.

Dr. Claudio  Pistidda
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Technological development/challenges in hydrogen technology

  • Hydrogen storage in metal containing systems

  • Metals in hydrogen production

  • Metal as additives for hydrogen production and storage

  • Metal hydrides in energy storage applications

Published Papers (2 papers)

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Research

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Open AccessFeature PaperArticle Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems
Metals 2018, 8(6), 469; https://doi.org/10.3390/met8060469
Received: 1 June 2018 / Revised: 16 June 2018 / Accepted: 18 June 2018 / Published: 20 June 2018
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Abstract
Traditional high-pressure mechanical compressors account for over half of the car station’s cost, have insufficient reliability, and are not feasible for a large-scale fuel cell market. An alternative technology, employing a two-stage, hybrid system based on electrochemical and metal hydride compression technologies, represents
[...] Read more.
Traditional high-pressure mechanical compressors account for over half of the car station’s cost, have insufficient reliability, and are not feasible for a large-scale fuel cell market. An alternative technology, employing a two-stage, hybrid system based on electrochemical and metal hydride compression technologies, represents an excellent alternative to conventional compressors. The high-pressure stage, operating at 100–875 bar, is based on a metal hydride thermal system. A techno-economic analysis of the metal hydride system is presented and discussed. A model of the metal hydride system was developed, integrating a lumped parameter mass and energy balance model with an economic model. A novel metal hydride heat exchanger configuration is also presented, based on minichannel heat transfer systems, allowing for effective high-pressure compression. Several metal hydrides were analyzed and screened, demonstrating that one selected material, namely (Ti0.97Zr0.03)1.1Cr1.6Mn0.4, is likely the best candidate material to be employed for high-pressure compressors under the specific conditions. System efficiency and costs were assessed based on the properties of currently available materials at industrial levels. Results show that the system can reach pressures on the order of 875 bar with thermal power provided at approximately 150 °C. The system cost is comparable with the current mechanical compressors and can be reduced in several ways as discussed in the paper. Full article
(This article belongs to the Special Issue Metals in Hydrogen Technology)
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Review

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Open AccessFeature PaperReview Solid State Hydrogen Storage in Alanates and Alanate-Based Compounds: A Review
Metals 2018, 8(8), 567; https://doi.org/10.3390/met8080567
Received: 20 June 2018 / Revised: 17 July 2018 / Accepted: 18 July 2018 / Published: 24 July 2018
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Abstract
The safest way to store hydrogen is in solid form, physically entrapped in molecular form in highly porous materials, or chemically bound in atomic form in hydrides. Among the different families of these compounds, alkaline and alkaline earth metals alumino-hydrides (alanates) have been
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The safest way to store hydrogen is in solid form, physically entrapped in molecular form in highly porous materials, or chemically bound in atomic form in hydrides. Among the different families of these compounds, alkaline and alkaline earth metals alumino-hydrides (alanates) have been regarded as promising storing media and have been extensively studied since 1997, when Bogdanovic and Schwickardi reported that Ti-doped sodium alanate could be reversibly dehydrogenated under moderate conditions. In this review, the preparative methods; the crystal structure; the physico-chemical and hydrogen absorption-desorption properties of the alanates of Li, Na, K, Ca, Mg, Y, Eu, and Sr; and of some of the most interesting multi-cation alanates will be summarized and discussed. The most promising alanate-based reactive hydride composite (RHC) systems developed in the last few years will also be described and commented on concerning their hydrogen absorption and desorption performance. Full article
(This article belongs to the Special Issue Metals in Hydrogen Technology)
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