Journal ArticleDOI
Air-stable magnesium nanocomposites provide rapid and high-capacity hydrogen storage without using heavy-metal catalysts
Ki-Joon Jeon,Hoi Ri Moon,Hoi Ri Moon,Anne M. Ruminski,B. Jiang,Christian Kisielowski,Rizia Bardhan,Jeffrey J. Urban +7 more
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The synthesis of an air-stable composite material that consists of metallic Mg nanocrystals (NCs) in a gas-barrier polymer matrix that enables both the storage of a high density of hydrogen and rapid kinetics and nanostructuring of the Mg provides rapid storage kinetics without using expensive heavy-metal catalysts.Abstract:
Hydrogen is a promising alternative energy carrier that can potentially facilitate the transition from fossil fuels to sources of clean energy because of its prominent advantages such as high energy density (142 MJ kg(-1); ref. 1), great variety of potential sources (for example water, biomass, organic matter), light weight, and low environmental impact (water is the sole combustion product). However, there remains a challenge to produce a material capable of simultaneously optimizing two conflicting criteria--absorbing hydrogen strongly enough to form a stable thermodynamic state, but weakly enough to release it on-demand with a small temperature rise. Many materials under development, including metal-organic frameworks, nanoporous polymers, and other carbon-based materials, physisorb only a small amount of hydrogen (typically 1-2 wt%) at room temperature. Metal hydrides were traditionally thought to be unsuitable materials because of their high bond formation enthalpies (for example MgH(2) has a ΔHf~75 kJ mol(-1)), thus requiring unacceptably high release temperatures resulting in low energy efficiency. However, recent theoretical calculations and metal-catalysed thin-film studies have shown that microstructuring of these materials can enhance the kinetics by decreasing diffusion path lengths for hydrogen and decreasing the required thickness of the poorly permeable hydride layer that forms during absorption. Here, we report the synthesis of an air-stable composite material that consists of metallic Mg nanocrystals (NCs) in a gas-barrier polymer matrix that enables both the storage of a high density of hydrogen (up to 6 wt% of Mg, 4 wt% for the composite) and rapid kinetics (loading in <30 min at 200 °C). Moreover, nanostructuring of the Mg provides rapid storage kinetics without using expensive heavy-metal catalysts.read more
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Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems
Andrea C. Ferrari,Francesco Bonaccorso,Francesco Bonaccorso,Vladimir I. Fal'ko,Konstantin S. Novoselov,Stephan Roche,Peter Bøggild,Stefano Borini,Frank H. L. Koppens,Vincenzo Palermo,Nicola M. Pugno,Nicola M. Pugno,Nicola M. Pugno,Jose A. Garrido,Roman Sordan,Alberto Bianco,Laura Ballerini,Maurizio Prato,Elefterios Lidorikis,Jani Kivioja,Claudio Marinelli,Tapani Ryhänen,Alberto F. Morpurgo,Jonathan N. Coleman,Valeria Nicolosi,Luigi Colombo,Albert Fert,Albert Fert,Mar García-Hernández,Adrian Bachtold,Grégory F. Schneider,Francisco Guinea,Cees Dekker,Matteo Barbone,Zhipei Sun,Costas Galiotis,Alexander N. Grigorenko,Gerasimos Konstantatos,Andras Kis,Mikhail I. Katsnelson,Lieven M. K. Vandersypen,A. Loiseau,Vittorio Morandi,Daniel Neumaier,Emanuele Treossi,Vittorio Pellegrini,Vittorio Pellegrini,Marco Polini,Alessandro Tredicucci,Gareth M. Williams,Byung Hee Hong,Jong Hyun Ahn,Jong Min Kim,Herbert Zirath,Bart J. van Wees,Herre S. J. van der Zant,Luigi Occhipinti,Andrea di Matteo,Ian A. Kinloch,Thomas Seyller,Etienne Quesnel,Xinliang Feng,K.B.K. Teo,Nalin Rupesinghe,Pertti Hakonen,Simon R. T. Neil,Quentin Tannock,Tomas Löfwander,Jari M. Kinaret +68 more
TL;DR: An overview of the key aspects of graphene and related materials, ranging from fundamental research challenges to a variety of applications in a large number of sectors, highlighting the steps necessary to take GRMs from a state of raw potential to a point where they might revolutionize multiple industries are provided.
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Nanomaterials for renewable energy production and storage
TL;DR: In this article, the authors reviewed recent and significant advances in the development of nanomaterials for renewable energy applications and special emphases are given to the studies of solar-driven photocatalytic hydrogen production, electricity generation with dye-sensitized solar cells, solid-state hydrogen storage, and electric energy storage with lithium ion rechargeable batteries.
Journal ArticleDOI
Recent advances and remaining challenges of nanostructured materials for hydrogen storage applications
TL;DR: In this article, the most recent progress in the development of nanostructured materials for hydrogen storage technology is reviewed, demonstrating that these materials provide a pronounced benefit to applications involving molecular hydrogen storage, chemical hydrogen storage and as supports for the nanoconfinement of various hydrides.
Journal ArticleDOI
CoP-Doped MOF-Based Electrocatalyst for pH-Universal Hydrogen Evolution Reaction
TL;DR: Density functional theory calculations and experimental results reveal that the electron transfer from CoP to Co-MOF through N-P/N-Co bonds could lead to the optimized adsorption energy of H2 O and hydrogen, which contributes to the remarkable HER performance.
Journal ArticleDOI
Materials for hydrogen-based energy storage – past, recent progress and future outlook
Michael Hirscher,Volodymyr A. Yartys,Marcello Baricco,José M. Bellosta von Colbe,Didier Blanchard,Robert C. Bowman,Darren P. Broom,Craig E. Buckley,Fei Chang,Ping Chen,Young Whan Cho,Jean-Claude Crivello,Fermin Cuevas,William I. F. David,William I. F. David,Petra E. de Jongh,Roman V. Denys,Martin Dornheim,Michael Felderhoff,Yaroslav Filinchuk,George E. Froudakis,David M. Grant,Evan Gray,Bjørn C. Hauback,Teng He,Terry D. Humphries,Torben R. Jensen,Sangryun Kim,Yoshitsugu Kojima,Michel Latroche,Hai Wen Li,Mykhaylo Lototskyy,Joshua W. Makepeace,Kasper T. Møller,Lubna Naheed,Peter Ngene,Dag Noréus,Magnus Moe Nygård,Shin Ichi Orimo,Mark Paskevicius,Luca Pasquini,Dorthe Bomholdt Ravnsbæk,M. Veronica Sofianos,Terrence J. Udovic,Tejs Vegge,Gavin S. Walker,Colin J. Webb,Claudia Weidenthaler,Claudia Zlotea +48 more
TL;DR: In this article, the authors present a review of the development of hydrogen storage materials, methods and techniques, including electrochemical and thermal storage systems, and an outlook for future prospects and research on hydrogen-based energy storage.
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