1
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Raju Karimadom B, Kornweitz H. The Effectiveness of Silver and Gold in Catalytic Homogenous and Heterogenous Borohydride Hydrolysis - a DFT Study. Chemphyschem 2024; 25:e202400253. [PMID: 38642388 DOI: 10.1002/cphc.202400253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/09/2024] [Accepted: 04/18/2024] [Indexed: 04/22/2024]
Abstract
Energy demands, and environmental aspects raised the need to study hydrogen-carrying material such as borohydride for the practical usage of hydrogen as a cleaner and more efficient fuel. A proper understanding of the hydrogen generation mechanism is a key requirement for the designing of efficient catalysts, as the non-catalytic hydrolysis of borohydride in non-acidic media is a slow process. The hydrolysis mechanism of borohydride varies considerably using homogeneous and heterogeneous catalysts. A comparison of the hydrolysis mechanism of borohydride using gold and silver as homogenous and heterogeneous catalysts is given in this review. Unexpectedly, with gold catalyst, Au+ or Au(111), only two steps of hydrolysis occur and BH(OH)2 is produced, while with silver catalyst, Ag+ or Ag(111), the hydrolysis can proceed to completion.
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Affiliation(s)
- Basil Raju Karimadom
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Chemical Science Department, Ariel University, Ariel, Israel
| | - Haya Kornweitz
- Chemical Science Department, Ariel University, Ariel, Israel
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2
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Grinderslev JB, Häussermann U, Jensen TR, Faraone A, Nagao M, Karlsson M, Udovic TJ, Andersson MS. Reorientational Dynamics in Y(BH 4) 3· xNH 3 ( x = 0, 3, and 7): The Impact of NH 3 on BH 4- Dynamics. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:4431-4439. [PMID: 38533240 PMCID: PMC10961835 DOI: 10.1021/acs.jpcc.4c00265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/23/2024] [Accepted: 03/01/2024] [Indexed: 03/28/2024]
Abstract
The reorientational dynamics of Y(BH4)3·xNH3 (x = 0, 3, and 7) was studied using quasielastic neutron scattering (QENS) and neutron spin echo (NSE). The results showed that changing the number of NH3 ligands drastically alters the reorientational mobility of the BH4- anion. From the QENS experiments, it was determined that the BH4- anion performs 2-fold reorientations around the C2 axis in Y(BH4)3, 3-fold reorientations around the C3 axis in Y(BH4)3·3NH3, and either 2-fold reorientations around the C2 axis or 3-fold reorientations around the C3 axis in Y(BH4)3·7NH3. The relaxation time of the BH4- anion at 300 K decreases from 2 × 10-7 s for x = 0 to 1 × 10-12 s for x = 3 and to 7 × 10-13 s for x = 7. In addition to the reorientational dynamics of the BH4- anion, it was shown that the NH3 ligands exhibit 3-fold reorientations around the C3 axis in Y(BH4)3·3NH3 and Y(BH4)3·7NH3 as well as 3-fold quantum mechanical rotational tunneling around the same axis at 5 K. The new insights constitute a significant step toward understanding the relationship between the addition of ligands and the enhanced ionic conductivity observed in systems such as LiBH4·xNH3 and Mg(BH4)2·xCH3NH2.
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Affiliation(s)
- J. B. Grinderslev
- Interdisciplinary
Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Aarhus DK-8000, Denmark
| | - U. Häussermann
- Department
of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Sweden
| | - T. R. Jensen
- Interdisciplinary
Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Aarhus DK-8000, Denmark
| | - A. Faraone
- NIST Center
for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United
States
| | - M. Nagao
- NIST Center
for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United
States
- Department
of Materials Science and Engineering, University
of Maryland, College Park, Maryland 20742-2115, United States
- Department
of Physics and Astronomy, University of
Delaware, Newark, Delaware 19716, United States
| | - M. Karlsson
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Göteborg SE-412 96, Sweden
| | - T. J. Udovic
- NIST Center
for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United
States
- Department
of Materials Science and Engineering, University
of Maryland, College Park, Maryland 20742-2115, United States
| | - M. S. Andersson
- Ångström
Laboratory, Department of Chemistry, Uppsala
University, Box 538, SE-751 21 Uppsala, Sweden
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3
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Lu Z, Qiu P, Kang JX, Chen X, Zhang G, Zhang Y, Chen X. Potassium Decahydrido- closo-Decaborane Urea Complex as a Potential Solid-State Electrolyte for Potassium Metal Batteries. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10070-10077. [PMID: 38380614 DOI: 10.1021/acsami.3c17570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
All-solid-state potassium metal batteries have been considered promising candidates for large-scale energy storage because of abundance and wide availability of K resources, elimination of flammable liquid organic electrolytes, and incorporation of high-capacity K metal anode. However, unideal K-ion conductivities of most reported K-ion solid electrolytes have restricted the development of these batteries. Herein, a novel K2B10H10·CO(NH2)2 complex is reported, forming by incorporating urea into K2B10H10, to achieve an enhanced K-ion conductivity. The crystal structure of K2B10H10·CO(NH2)2 was determined as a monoclinic lattice with the space group of C2/c (No. 15). K2B10H10·CO(NH2)2 delivers an ionic conductivity of 2.7 × 10-8 S cm-1 at 25 °C, and reaching 1.3 × 10-4 S cm-1 at 80 °C, which is about 4 orders of magnitude higher than that of K2B10H10. One possible reason is the anion expansion in size due to the presence of dihydrogen bonds in K2B10H10·CO(NH2)2, resulting in an increase in the K-H bond distance and the electrostatic potential, thereby enhancing the mobility of K+. The K-ion conductivity is also higher than those of most hydridoborate-based K-ion conductors reported. Besides, K2B10H10·CO(NH2)2 reveals a wide electrochemical stability window and remarkable interface compatibility with K metal electrodes, suggesting a promising electrolyte for all-solid-state K metal batteries.
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Affiliation(s)
- Zhiwei Lu
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Pengtao Qiu
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jia-Xin Kang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinwei Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guoguo Zhang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yichun Zhang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuenian Chen
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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4
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Pantaleone S, Albanese E, Donà L, Corno M, Baricco M, Civalleri B. Theoretical prediction of nanosizing effects and role of additives in the decomposition of Mg(BH 4) 2. RSC Adv 2024; 14:6398-6409. [PMID: 38380234 PMCID: PMC10877581 DOI: 10.1039/d3ra08710g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/13/2024] [Indexed: 02/22/2024] Open
Abstract
The energetic transition towards renewable resources is one of the biggest challenges of this century. In this context, the role of H2 is of paramount importance as a key source of energy that could substitute traditional fossil fuels. This technology, even if available in several manufactures, still needs to be optimized at all levels (production, storage and distribution) to be integrated on a larger scale. Among materials suitable to store H2, Mg(BH4)2 is particularly interesting due to its high content of H2 in terms of gravimetric density. Nanosizing effects and role of additives in the decomposition of Mg(BH4)2 were studied by density functional theory (DFT) modelling. Both effects were analyzed because of their contribution in promoting the decomposition of the material. In particular, to have a quantitative idea of nanosizing effects, we used thin film 2D models corresponding to different crystallographic surfaces and referred to the following reaction: Mg(BH4)2 → MgB2 + 4H2. When moving from bulk to nanoscale (2D models), a remarkable decrease in the decomposition energy (10-20 kJ mol-1) was predicted depending on the surface and the thin film thickness considered. As regards the role of additives (Ni and Cu), we based our analysis on their effect in perturbing neighboring borohydride groups. We found a clear elongation of some B-H bonds, in particular with the NiF2 additive (about 0.1 Å). We interpreted this behavior as an indicator of the propensity of borohydride towards dissociation. On the basis of this evidence, we also explored a possible reaction pathway of NiF2 and CuF2 on Mg(BH4)2 up to H2 release and pointed out the major catalytic effect of Ni compared to Cu.
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Affiliation(s)
- Stefano Pantaleone
- Dipartimento di Chimica and NIS Interdepartmental Centre, Università degli Studi di Torino via P. Giuria 7 10125 Torino Italy
| | - Elisa Albanese
- Dipartimento di Chimica and NIS Interdepartmental Centre, Università degli Studi di Torino via P. Giuria 7 10125 Torino Italy
| | - Lorenzo Donà
- Dipartimento di Chimica and NIS Interdepartmental Centre, Università degli Studi di Torino via P. Giuria 7 10125 Torino Italy
| | - Marta Corno
- Dipartimento di Chimica and NIS Interdepartmental Centre, Università degli Studi di Torino via P. Giuria 7 10125 Torino Italy
| | - Marcello Baricco
- Dipartimento di Chimica and NIS Interdepartmental Centre, Università degli Studi di Torino via P. Giuria 7 10125 Torino Italy
| | - Bartolomeo Civalleri
- Dipartimento di Chimica and NIS Interdepartmental Centre, Università degli Studi di Torino via P. Giuria 7 10125 Torino Italy
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5
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Ibrahim A, Paskevicius M, Humphries TD, Buckley CE. Producing Alkali Metal Hydrides from Hydroxides. Inorg Chem 2024; 63:3047-3056. [PMID: 38285530 DOI: 10.1021/acs.inorgchem.3c03920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
In this study, a novel method for producing different alkali metal hydrides (NaH, KH, RbH, and CsH) from their corresponding metal hydroxides (NaOH, KOH, RbOH, and CsOH) is presented. For the production of NaH from NaOH, a variety of metallic reducing agents (Mg, Al, Si, CaH2, Cr, Mn, and Sr) were investigated. The reactions took place in an autoclave reactor with paraffin oil at 250 °C and 14 bar of H2 pressure. Splitting the process into two steps (metal formation and hydrogenation) simplified the separation and purification for the produced metal hydride. Moreover, the study explores the potential for this method of NaH production to be used for NaBH4 production and regeneration for hydrogen export applications. This approach offers an alternative, cost-effective method for producing NaH.
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Affiliation(s)
- Ainee Ibrahim
- Physics and Astronomy, Institute for Energy Transition, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Mark Paskevicius
- Physics and Astronomy, Institute for Energy Transition, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Terry D Humphries
- Physics and Astronomy, Institute for Energy Transition, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Craig E Buckley
- Physics and Astronomy, Institute for Energy Transition, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
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6
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Chen XM, Yu XC, Chi JX, Jing Y, Wang H, Zhang N, Zhang C, Ge YW, Chen X. An improved method for the synthesis and formation mechanism of M 2B 10H 14 based on the reactions of B 10H 14 with MNH 2BH 3 (M = Na, K). Dalton Trans 2023; 52:17684-17688. [PMID: 37999641 DOI: 10.1039/d3dt03403h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
An efficient method for the synthesis of M2B10H14 (M = Na and K) has been developed. The two possible formation mechanisms of the B10H142- anion are proposed, in which the NH2BH3- anion acts as a proton abstractor and a hydride donor. Furthermore, the B10H13- and B10H15- intermediates were detected.
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Affiliation(s)
- Xi-Meng Chen
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xing-Chao Yu
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jing-Xian Chi
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yi Jing
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Hongju Wang
- School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Na Zhang
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
| | - Chen Zhang
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yi-Wen Ge
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuenian Chen
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
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7
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Lastowski RJ, Yarranton JT, Zhu L, Vogiatzis KD, Girolami GS. Three-Center M-H-B Bonds Are Strong Field Interactions. Synthesis and Characterization of M(CH 2NMe 2BH 3) 3 Complexes of Titanium, Chromium, and Cobalt. J Am Chem Soc 2023; 145:23585-23599. [PMID: 37851538 DOI: 10.1021/jacs.3c07336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
We describe new compounds of stoichiometry M(CH2NMe2BH3)3 (M = Ti, Cr, and Co), each of which contains three chelating boranatodimethylaminomethyl (BDAM) ligands. In all three compounds, the BDAM anion, which is isoelectronic and isostructural with the neopentyl group, is bound to the metal center at one end by a metal-carbon σ bond and at the other by one three-center M-H-B interaction. The crystal structures show that the d1 titanium(III) compound is trigonal prismatic (or eight-coordinate, if two longer-ranged M···H interactions with the BH3 groups are included), whereas the d3 chromium(III) compound and the d6 cobalt(III) compounds are both fac-octahedral. The Cr and Co compounds exhibit two rapid dynamic processes in solution: exchange between the Δ and Λ enantiomers and exchange of the terminal and bridging hydrogen atoms on boron. For the Co complex, the barrier for Δ/Λ exchange (ΔG⧧298 = 10.1 kcal mol-1) is significantly smaller than those seen in other octahedral cobalt(III) compounds; DFT calculations suggest that Bailar twist and dissociative pathways for Δ/Λ exchange are both possible mechanisms. The UV-vis absorption spectra of the cobalt(III) and chromium(III) species show that the ligand field splittings Δo caused by the M-H-B interactions are unexpectedly large, thus placing them high on the spectrochemical series (near ammonia and alkyl groups); their nephelauxetic effect is also large. The DFT calculations suggest that these properties of M-H-B interactions are in part a consequence of their three-center nature, which delocalizes electron density away from the metal center and reduces electron-electron repulsions.
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Affiliation(s)
- R Joseph Lastowski
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Jonathan T Yarranton
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Lingyang Zhu
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | | | - Gregory S Girolami
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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8
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Jaroń T. The Preparation, Characterization, and Pressure-Influenced Dihydrogen Interactions of Tetramethylphosphonium Borohydride. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5334. [PMID: 37570038 PMCID: PMC10420206 DOI: 10.3390/ma16155334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/22/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023]
Abstract
Tetramethylphosphonium borohydride was synthesized via an ion metathesis reaction in a weakly-coordinating aprotic environment. [(CH3)4P]BH4, in contrast to related [(CH3)4N]+ compounds which tend to crystallize in a tetragonal system, adopts the distorted wurtzite structure (P63mc), resembling some salts containing analogous ions of As and Sb. [(CH3)4P]BH4 decomposes thermally in several endo- and exothermic steps above ca. 240 °C. This renders it more stable than [(CH3)4N]BH4, with a lowered temperature of decomposition onset by ca. 20 °C and solely exothermic processes observed. Raman spectra measured at the 0-10 GPa range indicate that a polymorphic transition occurs within 0.53-1.86 GPa, which is further confirmed by the periodic DFT calculations. The latter suggests a phase transition around 0.8 GPa to a high-pressure phase of [(CH3)4N]BH4. The P63mc phase seems to be destabilized under high pressure by relatively closer dihydrogen interactions, including the C-H…H-C contacts.
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Affiliation(s)
- Tomasz Jaroń
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-089 Warsaw, Poland
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9
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Golub IE, Heere M, Gounaris V, Li X, Steenhaut T, Wang J, Robeyns K, Li HW, Dovgaliuk I, Ikeda K, Hautier G, Filinchuk Y. Structural insight into the magnesium borohydride - ethylenediamine solid-state Mg-ion electrolyte system. Dalton Trans 2023; 52:2404-2411. [PMID: 36723231 DOI: 10.1039/d2dt03567g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A highly complex crystal structure of stoichiometric Mg5(en)6(BH4)10 was solved from single crystal synchrotron X-ray diffraction and confirmed by neutron powder diffraction (NPD) on isotopically substituted Mg(en)1.2(11BD4)2. We highlight the role of the amorphous Mg(BH4)2 in the reactivity of the Mg(BH4)2-en system and characterized a previously overlooked phase, Mg(en)2(BH4)2.
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Affiliation(s)
- Igor E Golub
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
| | - Michael Heere
- Institute for Applied Materials-Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein, Germany.,Technische Universität Braunschweig, Institute of Internal Combustion Engines, Hermann-Blenk-Straße 42, 38108 Braunschweig, Germany
| | - Volodia Gounaris
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
| | - Xiao Li
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
| | - Timothy Steenhaut
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
| | - Jian Wang
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
| | - Hai-Wen Li
- Hefei General Machinery Research Institute (HGMRI), Hefei 230031, China
| | - Iurii Dovgaliuk
- Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 71 Rue des Martyrs, Grenoble, 38043, France.,Institut des Matériaux Poreux de Paris, Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL Université, 75005 Paris, France
| | - Kazutaka Ikeda
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Geoffroy Hautier
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
| | - Yaroslav Filinchuk
- Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain (UCLouvain), 1348, Louvain-la-Neuve, Belgium.
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10
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Wang J, Steenhaut T, Li HW, Filinchuk Y. High Yield Autoclave Synthesis of pure M 2B 12H 12 (M = Na, K). Inorg Chem 2023; 62:2153-2160. [PMID: 36693191 DOI: 10.1021/acs.inorgchem.2c03810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Metal dodecaborates (MxB12H12) are a versatile class of materials used in polymer chemistry and cancer treatment and are promising candidates as electrolytes for solid-state batteries. However, a general and scalable approach has not yet been developed for producing high-purity B12H122- derivatives. In this work, we report a simple, efficient, and environmentally benign solvothermal method to prepare diffraction and 11B NMR pure Na2B12H12 (85% yield) and K2B12H12 (84% yield). This new synthetic approach is based on the use of the borane dimethyl sulfide complex (DMS·BH3) and borohydrides (NaBH4, KBH4) heated at different temperatures in diglyme in an autoclave. It was found that high-purity Na2B12H12·diglyme solvate is obtained via an intermediate formation of B3H8-, B9H14-, and B11H14-, which are all soluble in diglyme. Heating under vacuum is shown to be efficient for removing the coordinated diglyme, allowing the formation of unsolvated Na2B12H12. Autoclave synthesis starting from KBH4 directly yields solvent-free K2B12H12, and ball-milling KBH4 prior to the synthesis enabling us to significantly improve the final yield. The new synthetic method paves the way for large-scale synthesis of MxB12H12 derivatives, enabling to envisage a wider scope of practical applications.
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Affiliation(s)
- Jian Wang
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, 1348Louvain-la-Neuve, Belgium
| | - Timothy Steenhaut
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, 1348Louvain-la-Neuve, Belgium
| | - Hai-Wen Li
- Hefei General Machinery Research Institute, Hefei230031, China
| | - Yaroslav Filinchuk
- Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, 1348Louvain-la-Neuve, Belgium
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11
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Kobayashi Y, Sunada Y. Germanium hydrides as an efficient hydrogen-storage material operated by an iron catalyst. Chem Sci 2023; 14:1065-1071. [PMID: 36756342 PMCID: PMC9891375 DOI: 10.1039/d2sc06011f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/29/2022] [Indexed: 01/22/2023] Open
Abstract
The use of metal hydrides such as NaBH4 as hydrogen-storage materials has recently received substantial research attention on account of the worldwide demand for the development of efficient hydrogen-production, -storage, and -transportation systems. Here, we report the quantitative production of H2 gas from a germanium hydride, Ph2GeH2, mediated by an iron catalyst at room temperature via dehydrogenative coupling, concomitant with the formation of (GePh2)5. Of particular importance is that Ph2GeH2 can be facilely recovered from (GePh2)5 by contact with 1 atm of H2 or PhICl2/LiAlH4 at 0 °C or 40 °C, respectively. A detailed reaction mechanism for the iron-catalyzed dehydrogenative coupling of Ph2GeH2 is proposed based on the isolation of four intermediate iron species.
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Affiliation(s)
- Yoshinao Kobayashi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo4-6-1, Komaba, Meguro-kuTokyo 153-8505Japan
| | - Yusuke Sunada
- Department of Applied Chemistry, School of Engineering, The University of Tokyo 4-6-1, Komaba, Meguro-ku Tokyo 153-8505 Japan.,Institute of Industrial Science, The University of Tokyo 4-6-1, Komaba, Meguro-ku Tokyo 153-8505 Japan
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12
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Paving the Way to the Fuel of the Future-Nanostructured Complex Hydrides. Int J Mol Sci 2022; 24:ijms24010143. [PMID: 36613588 PMCID: PMC9820751 DOI: 10.3390/ijms24010143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/16/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
Hydrides have emerged as strong candidates for energy storage applications and their study has attracted wide interest in both the academic and industry sectors. With clear advantages due to the solid-state storage of hydrogen, hydrides and in particular complex hydrides have the ability to tackle environmental pollution by offering the alternative of a clean energy source: hydrogen. However, several drawbacks have detracted this material from going mainstream, and some of these shortcomings have been addressed by nanostructuring/nanoconfinement strategies. With the enhancement of thermodynamic and/or kinetic behavior, nanosized complex hydrides (borohydrides and alanates) have recently conquered new estate in the hydrogen storage field. The current review aims to present the most recent results, many of which illustrate the feasibility of using complex hydrides for the generation of molecular hydrogen in conditions suitable for vehicular and stationary applications. Nanostructuring strategies, either in the pristine or nanoconfined state, coupled with a proper catalyst and the choice of host material can potentially yield a robust nanocomposite to reliably produce H2 in a reversible manner. The key element to tackle for current and future research efforts remains the reproducible means to store H2, which will build up towards a viable hydrogen economy goal. The most recent trends and future prospects will be presented herein.
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13
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Turani‐I‐Belloto K, Valero‐Pedraza M, Petit E, Chiriac R, Toche F, Granier D, Yot PG, Alauzun JG, Demirci UB. Solid‐State Structures of Primary Long‐Chain Alkylamine Borane Adducts – Synthesis, Properties and Computational Analysis. ChemistrySelect 2022. [DOI: 10.1002/slct.202203533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Kevin Turani‐I‐Belloto
- Institut Europeen des Membranes IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 France
| | | | - Eddy Petit
- Institut Europeen des Membranes IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 France
| | - Rodica Chiriac
- Laboratoire des Multimateriaux et Interfaces UMR CNRS 5615 Univ Lyon 1 Université Claude Bernard Lyon 1 F 69622 Villeurbanne France
| | - François Toche
- Laboratoire des Multimateriaux et Interfaces UMR CNRS 5615 Univ Lyon 1 Université Claude Bernard Lyon 1 F 69622 Villeurbanne France
| | - Dominique Granier
- Institut Charles Gerhardt Univ. Montpellier CNRS, ENSCM Montpellier France
| | - Pascal G. Yot
- Institut Charles Gerhardt Univ. Montpellier CNRS, ENSCM Montpellier France
| | - Johan G. Alauzun
- Institut Charles Gerhardt Univ. Montpellier CNRS, ENSCM Montpellier France
| | - Umit B. Demirci
- Institut Europeen des Membranes IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 France
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Allendorf MD, Stavila V, Snider JL, Witman M, Bowden ME, Brooks K, Tran BL, Autrey T. Challenges to developing materials for the transport and storage of hydrogen. Nat Chem 2022; 14:1214-1223. [DOI: 10.1038/s41557-022-01056-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 09/02/2022] [Indexed: 11/09/2022]
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15
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Reynolds JE, Acosta AC, Kang S, Li S, Lipton AS, Bowden ME, Myllenbeck NR, Schneemann A, Leick N, Bhandarkar A, Reed C, Horton RD, Gennett T, Wood BC, Allendorf MD, Stavila V. Teaching an Old Reagent New Tricks: Synthesis, Unusual Reactivity, and Solution Dynamics of Borohydride Grignard Compounds. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joseph E. Reynolds
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Austin C. Acosta
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - ShinYoung Kang
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Sichi Li
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Andrew S. Lipton
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, Washington 99354, United States
| | - Mark E. Bowden
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, Washington 99354, United States
| | - Nicholas R. Myllenbeck
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Andreas Schneemann
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
- Department of Inorganic Chemistry I, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Noemi Leick
- National Renewable Energy Laboratory, 15013 Denver W Parkway, Golden, Colorado 80401, United States
| | - Austin Bhandarkar
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Christopher Reed
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Robert D. Horton
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Thomas Gennett
- National Renewable Energy Laboratory, 15013 Denver W Parkway, Golden, Colorado 80401, United States
| | - Brandon C. Wood
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Mark D. Allendorf
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Vitalie Stavila
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
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16
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Zyubin AS, Zyubina TS, Kravchenko OV, Solov’ev MV, Vasiliev VP, Zaitsev AA, Shikhovtsev AV, Dobrovol’sky YA. Quantum-Chemical Simulation of Molecular Hydrogen Abstraction from Magnesium Borohydride Triammoniate. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622100576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Souza DHP, D'Angelo AM, Humphries TD, Buckley CE, Paskevicius M. Na 2B 11H 13 and Na 11(B 11H 14) 3(B 11H 13) 4 as potential solid-state electrolytes for Na-ion batteries. Dalton Trans 2022; 51:13848-13857. [PMID: 36039870 DOI: 10.1039/d2dt01943d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid-state sodium batteries have attracted great attention owing to their improved safety, high energy density, large abundance and low cost of sodium compared to the current Li-ion batteries. Sodium-boranes have been studied as potential solid-state electrolytes and the search for new materials is necessary for future battery applications. Here, a facile and cost-effective solution-based synthesis of Na2B11H13 and Na11(B11H14)3(B11H13)4 is demonstrated. Na2B11H13 presents an ionic conductivity in the order of 10-7 S cm-1 at 30 °C, but undergoes an order-disorder phase transition and reaches 10-3 S cm-1 at 100 °C, close to that of liquids and the solid-state electrolyte Na-β-Al2O3. The formation of a mixed-anion solid-solution, Na11(B11H14)3(B11H13)4, partially stabilises the high temperature structural polymorph observed for Na2B11H13 at room temperature and it exhibits Na+ conductivity higher than its constituents (4.7 × 10-5 S cm-1 at 30 °C). Na2B11H13 and Na11(B11H14)3(B11H13)4 exhibit an oxidative stability limit of 2.1 V vs. Na+/Na.
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Affiliation(s)
- Diego H P Souza
- Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
| | | | - Terry D Humphries
- Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
| | - Craig E Buckley
- Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
| | - Mark Paskevicius
- Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
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18
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Grinderslev JB, Skov LN, Andreasen JG, Ghorwal S, Skibsted J, Jensen TR. Methylamine Lithium Borohydride as Electrolyte for All‐Solid‐State Batteries. Angew Chem Int Ed Engl 2022; 61:e202203484. [PMID: 35662368 PMCID: PMC9400857 DOI: 10.1002/anie.202203484] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Jakob B. Grinderslev
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Lasse N. Skov
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Jacob G. Andreasen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Shaiq Ghorwal
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Jørgen Skibsted
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Torben R. Jensen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
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19
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Kristensen LG, Amdisen MB, Skov LN, Jensen TR. Fast magnesium ion conducting isopropylamine magnesium borohydride enhanced by hydrophobic interactions. Phys Chem Chem Phys 2022; 24:18185-18197. [PMID: 35861397 DOI: 10.1039/d1cp05063j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
New materials for the next generation of electrochemical energy storage devices such as batteries are of extreme importance. Here we investigate the structure, ionic conductivity and thermal properties of isopropylamine magnesium borohydride based composites with different compositions, Mg(BH4)2·x(CH3)2CHNH2, x = 0.5, 0.9, 1.25, 1.5, 1.75, 2.5, 3.1. Three new compounds are discovered, x = 1, 2, and 3 and the monoclinic structure of Mg(BH4)2·2(CH3)2CHNH2 (P21/c) is investigated in detail. This structure consists of neutral complexes [Mg(BH4)2((CH3)2CHNH2)2] di-hydrogen bonded to form layers and these layers are connected by hydrophobic interactions via the isopropyl moieties. The orthorhombic unit cell of Mg(BH4)2·(CH3)2CHNH2 was also determined, a = 9.78, b = 12.17 and c = 17.24 Å. In general, the samples are thermally stable up to 50 °C where they started to become softer, and at 70 °C isopropylamine release and melting started. The highest Mg2+ ionic conductivity was that of Mg(BH4)2·1.5(CH3)2CHNH2, σ(Mg2+) = 2.7 × 10-4 S cm-1 at 45 °C, with an activation energy of EA = 1.22 eV. Furthermore, reversible stripping/plating of Mg was displayed at 45 °C, with an oxidative stability of 1.2 V vs. Mg/Mg2+. The addition of MgO nanoparticles (75 wt%) improves the mechanical and thermal stability, and decreases the activation energy, to EA = 0.56 eV. Thereby the Mg2+ conductivity is increased at low temperature. This suggests that the hydrophobic interactions contribute to the high ionic conductivity in the solid state, which opens a new avenue for design and discovery of electrolyte materials.
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Affiliation(s)
- Lasse G Kristensen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark.
| | - Mads B Amdisen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark.
| | - Lasse N Skov
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark.
| | - Torben R Jensen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark.
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20
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Arafa IM, Shatnawi MY, Obeidallah YN. Thermoelectric Performance of Ni, Co, and Fe Nanoparticles Incorporate Into Their Metal Borates Glassy Matrices. CAN J CHEM ENG 2022. [DOI: 10.1002/cjce.24561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Isam M. Arafa
- Department of Applied Chemistry, Faculty of Science and Arts Jordan University of Science and Technology, P.O. Box 3030 Irbid Jordan
| | - Mazin Y. Shatnawi
- Department of Applied Chemistry, Faculty of Science and Arts Jordan University of Science and Technology, P.O. Box 3030 Irbid Jordan
| | - Yousef N. Obeidallah
- Department of Applied Chemistry, Faculty of Science and Arts Jordan University of Science and Technology, P.O. Box 3030 Irbid Jordan
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21
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Grinderslev JB, Skov LN, Andreasen JG, Ghorwal S, Skibsted J, Jensen TR. Methylamine Lithium Borohydride as Electrolyte for All‐Solid‐State Batteries. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jakob Bæk Grinderslev
- Aarhus University: Aarhus Universitet Interdisciplinary Nanoscience Center (Inano) and Department of Chemistry Langelandsgade 140 8000 Aarhus C DENMARK
| | - Lasse N. Skov
- Aarhus University: Aarhus Universitet Interdisciplinary Nanoscience Center (Inano) and Department of Chemistry Langelandsgade 140 8000 Aarhus C DENMARK
| | - Jacob G. Andreasen
- Aarhus University: Aarhus Universitet Interdisciplinary Nanoscience Center (Inano) and Department of Chemistry Langelandsgade 140 8000 Aarhus DENMARK
| | - Shaiq Ghorwal
- Aarhus University: Aarhus Universitet Interdisciplinary Nanoscience Center (Inano) and Department of Chemistry Langelandsgade 140 8000 Aarhus C DENMARK
| | - Jørgen Skibsted
- Aarhus University: Aarhus Universitet Interdisciplinary Nanoscience Center (Inano) and Department of Chemistry Langelandsgade 140 8000 Aarhus C DENMARK
| | - Torben R. Jensen
- University of Aarhus iNANO, Department of Chemistry Langelandsgade 140 8000 Aarhus C DENMARK
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22
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Ray KG, Klebanoff LE, Stavila V, Kang S, Wan LF, Li S, Heo TW, Allendorf MD, Lee JRI, Baker AA, Wood BC. Understanding Hydrogenation Chemistry at MgB 2 Reactive Edges from Ab Initio Molecular Dynamics. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20430-20442. [PMID: 35319201 DOI: 10.1021/acsami.1c23524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Solid-state hydrogen storage materials often operate via transient, multistep chemical reactions at complex interfaces that are difficult to capture. Here, we use direct ab initio molecular dynamics simulations at accelerated temperatures and hydrogen pressures to probe the hydrogenation chemistry of the candidate material MgB2 without a priori assumption of reaction pathways. Focusing on highly reactive (101̅0) edge planes where initial hydrogen attack is likely to occur, we track mechanistic steps toward the formation of hydrogen-saturated BH4- units and key chemical intermediates, involving H2 dissociation, generation of functionalities and molecular complexes containing BH2 and BH3 motifs, and B-B bond breaking. The genesis of higher-order boron clustering is also observed. Different charge states and chemical environments at the B-rich and Mg-rich edge planes are found to produce different chemical pathways and preferred speciation, with implications for overall hydrogenation kinetics. The reaction processes rely on B-H bond polarization and fluctuations between ionic and covalent character, which are critically enabled by the presence of Mg2+ cations in the nearby interphase region. Our results provide guidance for devising kinetic improvement strategies for MgB2-based hydrogen storage materials, while also providing a template for exploring chemical pathways in other solid-state energy storage reactions.
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Affiliation(s)
- Keith G Ray
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | | | - Vitalie Stavila
- Sandia National Laboratories, Livermore, California 94551, United States
| | - ShinYoung Kang
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Liwen F Wan
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Sichi Li
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Tae Wook Heo
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Mark D Allendorf
- Sandia National Laboratories, Livermore, California 94551, United States
| | - Jonathan R I Lee
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Alexander A Baker
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Brandon C Wood
- Laboratory for Energy Applications for the Future (LEAF), Lawrence Livermore National Laboratory, Livermore, California 94550, United States
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23
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Abstract
The number of rare earth (RE) starting materials used in synthesis is staggering, ranging from simple binary metal-halide salts to borohydrides and "designer reagents" such as alkyl and organoaluminate complexes. This review collates the most important starting materials used in RE synthetic chemistry, including essential information on their preparations and uses in modern synthetic methodologies. The review is divided by starting material category and supporting ligands (i.e., metals as synthetic precursors, halides, borohydrides, nitrogen donors, oxygen donors, triflates, and organometallic reagents), and in each section relevant synthetic methodologies and applications are discussed.
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Affiliation(s)
- Fabrizio Ortu
- School of Chemistry, University of Leicester, LE1 7RH Leicester, U.K.
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24
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Comanescu C. Complex Metal Borohydrides: From Laboratory Oddities to Prime Candidates in Energy Storage Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:2286. [PMID: 35329738 PMCID: PMC8949998 DOI: 10.3390/ma15062286] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/26/2022] [Accepted: 03/11/2022] [Indexed: 01/27/2023]
Abstract
Despite being the lightest element in the periodic table, hydrogen poses many risks regarding its production, storage, and transport, but it is also the one element promising pollution-free energy for the planet, energy reliability, and sustainability. Development of such novel materials conveying a hydrogen source face stringent scrutiny from both a scientific and a safety point of view: they are required to have a high hydrogen wt.% storage capacity, must store hydrogen in a safe manner (i.e., by chemically binding it), and should exhibit controlled, and preferably rapid, absorption-desorption kinetics. Even the most advanced composites today face the difficult task of overcoming the harsh re-hydrogenation conditions (elevated temperature, high hydrogen pressure). Traditionally, the most utilized materials have been RMH (reactive metal hydrides) and complex metal borohydrides M(BH4)x (M: main group or transition metal; x: valence of M), often along with metal amides or various additives serving as catalysts (Pd2+, Ti4+ etc.). Through destabilization (kinetic or thermodynamic), M(BH4)x can effectively lower their dehydrogenation enthalpy, providing for a faster reaction occurring at a lower temperature onset. The present review summarizes the recent scientific results on various metal borohydrides, aiming to present the current state-of-the-art on such hydrogen storage materials, while trying to analyze the pros and cons of each material regarding its thermodynamic and kinetic behavior in hydrogenation studies.
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Affiliation(s)
- Cezar Comanescu
- National Institute of Materials Physics, 405A Atomiștilor St., 077125 Magurele, Romania
- Inorganic Chemistry Department, Politehnica University of Bucharest, 1 Polizu St., 011061 Bucharest, Romania
- Faculty of Physics, University of Bucharest, 405, Atomiștilor St., 077125 Magurele, Romania
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25
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Yan Y, Grinderslev JB, Burankova T, Wei S, Embs JP, Skibsted J, Jensen TR. Fast Room-Temperature Mg 2+ Conductivity in Mg(BH 4) 2·1.6NH 3-Al 2O 3 Nanocomposites. J Phys Chem Lett 2022; 13:2211-2216. [PMID: 35234479 DOI: 10.1021/acs.jpclett.2c00136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Design of new functional materials with fast Mg-ion mobility is crucial for the development of competitive solid-state magnesium batteries. Herein, we present new nanocomposites, Mg(BH4)2·1.6NH3-Al2O3, reaching a high magnesium conductivity of σ(Mg2+) = 2.5 × 10-5 S cm-1 at 22 °C assigned to favorable interfaces between amorphous state Mg(BH4)2·1.6NH3; inert and insulating Al2O3 nanoparticles; and a minor fraction of crystalline material, mainly Mg(BH4)2·2NH3. Furthermore, quasi-elastic neutron scattering reveals that the Mg2+-ion mobility in the solid state appears to be correlated to relatively slow motion of NH3 molecules rather than the fast dynamics of BH4- complexes. The nanocomposite is compatible with a metallic Mg anode and shows stable Mg2+ stripping/plating in a symmetric cell and an electrochemical stability of ∼1.2 V. The nanocomposite has high mechanical stability and ductility and is a promising Mg2+ electrolyte for future solid-state magnesium batteries.
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Affiliation(s)
- Yigang Yan
- Institute of New Energy and Low-Carbon Technology, Sichuan University, 610207 Chengdu, China
| | - Jakob B Grinderslev
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, 8000 Aarhus, Denmark
| | - Tatsiana Burankova
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Shanghai Wei
- Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, 1142 Auckland, New Zealand
| | - Jan P Embs
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Jørgen Skibsted
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, 8000 Aarhus, Denmark
| | - Torben R Jensen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, 8000 Aarhus, Denmark
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Perera S, Hettiarachchi SR, Hewage JW. Molecular Adsorption of H 2 on Small Neutral Silver-Copper Bimetallic Nanoparticles: A Search for Novel Hydrogen Storage Materials. ACS OMEGA 2022; 7:2316-2330. [PMID: 35071919 PMCID: PMC8772317 DOI: 10.1021/acsomega.1c06146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
In the search for novel hydrogen storage materials, neutral silver-copper bimetallic nanoparticles up to the size of eight atoms (Cu m Ag n : m + n ≤ 8) have been computationally studied. Density functional theory with the B3LYP exchange-correlation functional and the combined basis sets of LanL2DZ and aug-cc-pVQZ were used in all of the calculations. H2 adsorption studies on the most stable cluster geometries of all of the neat and heterogeneous entities found that 12 potential candidates, CuAg4, Cu6, Cu5Ag, Cu4Ag2, Cu3Ag3, Cu2Ag4, CuAg6, Cu5Ag3, Cu4Ag4, Cu3Ag5, Cu2Ag6, and CuAg7, fall within the recommended physisorption range of -18 to -6 kJ mol-1. A correlation in the behavior of binding energy, vibrational frequency, average bond distance, highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gap, and chemical hardness with H2 adsorption was observed. This analysis further revealed that the H2 adsorption to the cluster was either a parallel or a perpendicular alignment. The analysis of the electron configuration of each atom in the cluster and the H2 molecule and the charge transfer analysis of these 12 clusters also showed that the physisorption in the perpendicular mechanism is due to an induced dipole interaction, while that in the parallel mechanism is due to a weak ionic interaction. The clusters identified with perpendicular adsorption, CuAg4H2, Cu6H2, Cu3Ag3H2, and Cu2Ag4H2, polarized the H2 molecule but had no charge transfer with the H2 molecule and those identified with parallel adsorption, Cu5AgH2, Cu4Ag2H2, CuAg6H2, Cu5Ag3H2, Cu4Ag4H2, Cu3Ag5H2, Cu2Ag6H2, and CuAg7H2, pulled the electrons from the H2 molecule and had charge transfer with the H2 molecule. The shapes of the frontier molecular orbital diagrams of the HOMO and LUMO also followed this observation.
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Affiliation(s)
- Sathya
M. Perera
- Department
of Chemistry, University of Ruhuna, Matara 81000, Sri Lanka
- School
of Chemical and Biomolecular Sciences, Southern
Illinois University, Carbondale, Illinois 62901, United States
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Ferraro V, Castro J, Trave E, Bortoluzzi M. Preparation, reactivity and photoluminescence of copper(I) borohydride complexes with bis[(2-diphenylphosphino)phenyl] ether as chelating ligand. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Bardonov DA, Komarov PD, Sadrtdinova GI, Besprozvannyh VK, Lyssenko KA, Gudovannyy AO, Nifant'ev IE, Minyaev ME, Roitershtein DM. Cyclopentadienyl lanthanide borohydrides derived from the unsubstituted cyclopentadienyl ligand. Unprecedented structural diversity and ε-caprolactone polymerization. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Hagemann H. Boron Hydrogen Compounds: Hydrogen Storage and Battery Applications. Molecules 2021; 26:7425. [PMID: 34946503 PMCID: PMC8704501 DOI: 10.3390/molecules26247425] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/29/2021] [Accepted: 12/02/2021] [Indexed: 11/17/2022] Open
Abstract
About 25 years ago, Bogdanovic and Schwickardi (B. Bogdanovic, M. Schwickardi: J. Alloys Compd. 1-9, 253 (1997) discovered the catalyzed release of hydrogen from NaAlH4. This discovery stimulated a vast research effort on light hydrides as hydrogen storage materials, in particular boron hydrogen compounds. Mg(BH4)2, with a hydrogen content of 14.9 wt %, has been extensively studied, and recent results shed new light on intermediate species formed during dehydrogenation. The chemistry of B3H8-, which is an important intermediate between BH4- and B12H122-, is presented in detail. The discovery of high ionic conductivity in the high-temperature phases of LiBH4 and Na2B12H12 opened a new research direction. The high chemical and electrochemical stability of closo-hydroborates has stimulated new research for their applications in batteries. Very recently, an all-solid-state 4 V Na battery prototype using a Na4(CB11H12)2(B12H12) solid electrolyte has been demonstrated. In this review, we present the current knowledge of possible reaction pathways involved in the successive hydrogen release reactions from BH4- to B12H122-, and a discussion of relevant necessary properties for high-ionic-conduction materials.
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Affiliation(s)
- Hans Hagemann
- Département de Chimie Physique, Université de Genève, 30, Quai E. Ansermet, CH1211 Geneva 4, Switzerland
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30
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Severa G, Bruffey E, Nguyen PQH, Gigante A, Leick N, Kelly C, Finkelstein GJ, Hagemann H, Gennett T, Rocheleau RE, Dera P. Fe 4(OAc) 10[EMIM] 2: Novel Iron-Based Acetate EMIM Ionic Compound. ACS OMEGA 2021; 6:31907-31918. [PMID: 34870013 PMCID: PMC8637965 DOI: 10.1021/acsomega.1c04670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
We synthesized and characterized a novel iron(II) aceto EMIM coordination compound, which has a simplified empirical formula Fe4(OAc)10[EMIM]2, in two different hydration forms: as anhydrous monoclinic compound and triclinic dihydrate Fe4(OAc)10[EMIM]2·2H2O. The dihydrate compound is isostructural with recently reported Mn4(OAc)10[EMIM]2·2H2O, while the anhydrate is a superstructure of the Mn counterpart, suggesting the existence of solid solutions. Both new Fe compounds contain chains of Fe2+ octahedrally coordinated exclusively by acetate groups. The EMIM moieties do not interact directly with the Fe2+ and contribute to the structural framework of the compound through van der Waals forces and C-H···O hydrogen bonds with the acetate anions. The compounds have a melting temperature of ∼94 °C; therefore, they can be considered metal-containing ionic liquids. Differential thermal analysis indicates three endothermic transitions associated with melting, structural rearrangement in the molten state at about 157 °C, and finally, thermal decomposition of the Fe4(OAc)10[EMIM]2. Thermogravimetric analyses indicate an ∼72 wt % mass loss during the decomposition at 280-325 °C. The Fe4(OAc)10[EMIM]2 compounds have higher thermal stability than their Mn counterparts and [EMIM][OAc] but lower compared to iron(II) acetate. Temperature-programmed desorption coupled with mass spectrometry shows that the decomposition pathway of the Fe4(OAc)10[EMIM]2 involves four distinct regimes with peak temperatures at 88, 200, 267, and 345 °C. The main species observed in the decomposition of the compound are CH3, H2O, N2, CO, OC-CH3, OH-CO, H3C-CO-CH3, and H3C-O-CO-CH3. Variable-temperature infrared vibrational spectroscopy indicates that the phase transition at 160-180 °C is associated with a reorientation of the acetate ions, which may lead to a lower interaction with the [EMIM]+ before the decomposition of the Fe4(OAc)10[EMIM]2 upon further heating. The Fe4(OAc)10[EMIM]2 compounds are porous, plausibly capable of accommodating other types of molecules.
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Affiliation(s)
- Godwin Severa
- Hawai’i
Natural Energy Institute, University of
Hawai’i at Ma̅noa, 1680 East West Road, POST 109, Honolulu, Hawaii 96822, United States
| | - Edward Bruffey
- Hawai’i
Natural Energy Institute, University of
Hawai’i at Ma̅noa, 1680 East West Road, POST 109, Honolulu, Hawaii 96822, United States
| | - Phuong Q. H. Nguyen
- Hawai’i
Institute of Geophysics and Planetology, University of Hawai’i at Ma̅noa, 1680 East West Road, POST 109, Honolulu, Hawaii 96822, United States
| | - Angelina Gigante
- Département
de Chimie Physique, Université de
Genève, 30, quai E. Ansermet, 1211 Geneva 4, Switzerland
| | - Noemi Leick
- National
Renewable Energy Laboratory (NREL), Colorado, Colorado 80401, United States
| | - Colleen Kelly
- Hawai’i
Natural Energy Institute, University of
Hawai’i at Ma̅noa, 1680 East West Road, POST 109, Honolulu, Hawaii 96822, United States
| | - Gregory J. Finkelstein
- Hawai’i
Institute of Geophysics and Planetology, University of Hawai’i at Ma̅noa, 1680 East West Road, POST 109, Honolulu, Hawaii 96822, United States
| | - Hans Hagemann
- Département
de Chimie Physique, Université de
Genève, 30, quai E. Ansermet, 1211 Geneva 4, Switzerland
| | - Thomas Gennett
- National
Renewable Energy Laboratory (NREL), Colorado, Colorado 80401, United States
- Chemistry
Department, Colorado School of Mines, 1012 14th Street, Golden, Colorado 80401, United States
| | - Richard E. Rocheleau
- Hawai’i
Natural Energy Institute, University of
Hawai’i at Ma̅noa, 1680 East West Road, POST 109, Honolulu, Hawaii 96822, United States
| | - Przemyslaw Dera
- Hawai’i
Institute of Geophysics and Planetology, University of Hawai’i at Ma̅noa, 1680 East West Road, POST 109, Honolulu, Hawaii 96822, United States
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31
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Abstract
Humanity is confronted with one of the most significant challenges in its history. The excessive use of fossil fuel energy sources is causing extreme climate change, which threatens our way of life and poses huge social and technological problems. It is imperative to look for alternate energy sources that can replace environmentally destructive fossil fuels. In this scenario, hydrogen is seen as a potential energy vector capable of enabling the better and synergic exploitation of renewable energy sources. A brief review of the use of hydrogen as a tool for decarbonizing our society is given in this work. Special emphasis is placed on the possibility of storing hydrogen in solid-state form (in hydride species), on the potential fields of application of solid-state hydrogen storage, and on the technological challenges solid-state hydrogen storage faces. A potential approach to reduce the carbon footprint of hydrogen storage materials is presented in the concluding section of this paper.
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32
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Broom DP, Hirscher M. Improving Reproducibility in Hydrogen Storage Material Research. Chemphyschem 2021; 22:2141-2157. [PMID: 34382729 PMCID: PMC8596736 DOI: 10.1002/cphc.202100508] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/11/2021] [Indexed: 11/08/2022]
Abstract
Research into new reversible hydrogen storage materials has the potential to help accelerate the transition to a hydrogen economy. The discovery of an efficient and cost-effective method of safely storing hydrogen would revolutionise its use as a sustainable energy carrier. Accurately measuring storage capacities - particularly of novel nanomaterials - has however proved challenging, and progress is being hindered by ongoing problems with reproducibility. Various metal and complex hydrides are being investigated, together with nanoporous adsorbents such as carbons, metal-organic frameworks and microporous organic polymers. The hydrogen storage properties of these materials are commonly determined using either the manometric (or Sieverts) technique or gravimetric methods, but both approaches are prone to significant error, if not performed with great care. Although commercial manometric and gravimetric instruments are widely available, they must be operated with an awareness of the limits of their applicability and the error sources inherent to the measurement techniques. This article therefore describes the measurement of hydrogen sorption and covers the required experimental procedures, aspects of troubleshooting and recommended reporting guidelines, with a view of helping improve reproducibility in experimental hydrogen storage material research.
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Affiliation(s)
| | - Michael Hirscher
- Max Planck Institute for Intelligent SystemsHeisenbergstrasse 370569StuttgartGermany
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33
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Dun C, Jeong S, Liu YS, Leick N, Mattox TM, Guo J, Lee JW, Gennett T, Stavila V, Urban JJ. Additive Destabilization of Porous Magnesium Borohydride Framework with Core-Shell Structure. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101989. [PMID: 34569721 DOI: 10.1002/smll.202101989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Design of interfaces with thermodynamic and kinetic specificity is of great importance for hydrogen storage from both an applied and fundamental perspective. Here, in order to destabilize the metal hydride and protect the dehydrogenated products from oxidizing, a unique core-shell structure of porous Mg(BH4 )2 -based framework with a thin layer (no more than 5 nm) of MgCl2 additives on the surface, has been proposed and synthesized via a wet-chemical method. The local structure and electronic state of the present complex system are systematically investigated to understand the correlation between the distribution of additives and dehydrogenation property of Mg(BH4 )2 . A significant improvement is achieved for hydrogen desorption with chlorides: initial hydrogen release from MgCl2 decorated γ-phase Mg(BH4 )2 particles commences at 100 °C and reaches a maximum of 9.4 wt% at 385 °C. Besides the decreased decomposition temperature, an activation barrier of about 76.4 kJ mol-1 lower than that of Mg(BH4 )2 without MgCl2 is obtained. Moreover, MgCl2 decoration can also prevent the whole decomposed system (both Mg- and B- elements) from oxidizing, which is a necessary condition to reversibility.
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Affiliation(s)
- Chaochao Dun
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Sohee Jeong
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul, 02792, Korea
| | - Yi-Sheng Liu
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Noemi Leick
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Tracy M Mattox
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jinghua Guo
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Joo-Won Lee
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul, 02792, Korea
| | - Thomas Gennett
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
- Chemistry Department, Colorado School of Mines, 1012 14th Street, Golden, CO, 80401, USA
| | | | - Jeffrey J Urban
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
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34
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Chen X, Liu XR, Wang X, Chen XM, Jing Y, Wei D. A safe and efficient synthetic method for alkali metal octahydrotriborates, unravelling a general mechanism for constructing the delta B3 unit of polyhedral boranes. Dalton Trans 2021; 50:13676-13679. [PMID: 34590666 DOI: 10.1039/d1dt01892b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A safe and efficient synthetic method for MB3H8 (M = Na, K, Rb and Cs) has been developed with excellent yields by directly reacting the corresponding MBH4 with the dimethyl sulfide borane complex (DMS·BH3). A general mechanism for constructing B3H8-, a basic unit for building polyhedral boranes, has been unravelled.
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Affiliation(s)
- Xuenian Chen
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China. .,Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xin-Ran Liu
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinghua Wang
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Xi-Meng Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yi Jing
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Donghui Wei
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
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35
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Turani‐I‐Belloto K, Valero‐Pedraza M, Chiriac R, Toche F, Granier D, Cot D, Petit E, Yot PG, Alauzun JG, Demirci UB. A Series of Primary Alkylamine Borane Adducts C
x
H
2x+1
NH
2
BH
3
: Synthesis and Properties. ChemistrySelect 2021. [DOI: 10.1002/slct.202103126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kevin Turani‐I‐Belloto
- Institut Europeen des Membranes, IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 Montpellier France
| | - María‐José Valero‐Pedraza
- Institut Europeen des Membranes, IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 Montpellier France
| | - Rodica Chiriac
- Laboratoire des Multimateriaux et Interfaces UMR CNRS 5615 Univ Lyon 1 Université Claude Bernard Lyon 1 F-69622 Villeurbanne France
| | - François Toche
- Laboratoire des Multimateriaux et Interfaces UMR CNRS 5615 Univ Lyon 1 Université Claude Bernard Lyon 1 F-69622 Villeurbanne France
| | | | - Didier Cot
- Institut Europeen des Membranes, IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 Montpellier France
| | - Eddy Petit
- Institut Europeen des Membranes, IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 Montpellier France
| | - Pascal G. Yot
- ICGM Univ. Montpellier, CNRS, ENSCM Montpellier France
| | | | - Umit B. Demirci
- Institut Europeen des Membranes, IEM – UMR 5635 Universite de Montpellier, ENSCM, CNRS 34090 Montpellier France
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36
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Solid-State Hydrogen Storage Systems and the Relevance of a Gender Perspective. ENERGIES 2021. [DOI: 10.3390/en14196158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This paper aims at addressing the exploitation of solid-state carriers for hydrogen storage, with attention paid both to the technical aspects, through a wide review of the available integrated systems, and to the social aspects, through a preliminary overview of the connected impacts from a gender perspective. As for the technical perspective, carriers to be used for solid-state hydrogen storage for various applications can be classified into two classes: metal and complex hydrides. Related crystal structures and corresponding hydrogen sorption properties are reviewed and discussed. Fundamentals of thermodynamics of hydrogen sorption evidence the key role of the enthalpy of reaction, which determines the operating conditions (i.e., temperatures and pressures). In addition, it rules the heat to be removed from the tank during hydrogen absorption and to be delivered to the tank during hydrogen desorption. Suitable values for the enthalpy of hydrogen sorption reaction for operating conditions close to ambient (i.e., room temperature and 1–10 bar of hydrogen) are close to 30 kJ·molH2−1. The kinetics of the hydrogen sorption reaction is strongly related to the microstructure and to the morphology (i.e., loose powder or pellets) of the carriers. Usually, the kinetics of the hydrogen sorption reaction is rather fast, and the thermal management of the tank is the rate-determining step of the processes. As for the social perspective, the paper arguments that, as it occurs with the exploitation of other renewable innovative technologies, a wide consideration of the social factors connected to these processes is needed to reach a twofold objective: To assess the extent to which a specific innovation might produce positive or negative impacts in the recipient socioeconomic system and, from a sociotechnical perspective, to explore the potential role of the social components and dynamics in fostering the diffusion of the innovation itself. Within the social domain, attention has been paid to address the underexplored relationship between the gender perspective and the enhancement of hydrogen-related energy storage systems. This relationship is taken into account both in terms of the role of women in triggering the exploitation of hydrogen-based storage playing as experimenter and promoter, and in terms of the intertwined impact of this innovation in their current conditions, at work, and in daily life.
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37
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Zavorotynska O, Sørby MH, Vitillo JG, Deledda S, Frommen C, Hauback BC. Experimental and computational characterization of phase transitions in CsB 3H 8. Phys Chem Chem Phys 2021; 23:17836-17847. [PMID: 34612273 DOI: 10.1039/d1cp02189c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal hydroborates are versatile materials with interesting properties related to energy storage and cation conductivity. The hydrides containing B3H8- (triborane, or octahydrotriborate) ions have been at the center of attention for some time as reversible intermediates in the decomposition of BH4- (3BH4-↔ B3H8- + 2H2), and as conducting media in electrolytes based on boron-hydride cage clusters. We report here the first observation of two phase transitions in CsB3H8 prior to its decomposition above 230 °C. The previously reported orthorhombic room temperature phase (here named α-CsB3H8) with the space group Ama2 changes into a new phase with the space group Pnma at 73 °C (here named β-CsB3H8), and then into a face-centered cubic phase, here named γ-CsB3H8, at 88 °C. These phases are not stable at room temperature thus requiring in situ measurements for their characterization. The phase transitions and decomposition pathway of CsB3H8 were studied with in situ synchrotron powder X-ray diffraction (SR-PXD), in situ and ex situ vibrational spectroscopies (Raman and FTIR), and differential-scanning calorimetry combined with thermo-gravimetric analysis (DSC-TGA). The structure determination was validated by vibrational spectroscopy analysis and modeling of the periodic structures by density functional methods. In γ-CsB3H8, a significant disorder in B3H8- positions and orientations was found which can potentially benefit cation conducting properties through the paddle mechanism.
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Affiliation(s)
- Olena Zavorotynska
- Department for Hydrogen Technology, Institute for Energy Technology, P.O. Box 40, NO-2027, Kjeller, Norway.
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38
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Fetrow TV, Daly SR. Mechanochemical synthesis and structural analysis of trivalent lanthanide and uranium diphenylphosphinodiboranates. Dalton Trans 2021; 50:11472-11484. [PMID: 34346459 DOI: 10.1039/d1dt01932e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphinodiboranates (H3BPR2BH3-) are a class of borohydrides that have merited a reputation as weakly coordinating anions, which is attributed in part to the dearth of coordination complexes known with transition metals, lanthanides, and actinides. We recently reported how K(H3BPtBu2BH3) exhibits sluggish salt elimination reactivity with f-metal halides in organic solvents such as Et2O and THF. Here we report how this reactivity appears to be further attenuated in solution when the tBu groups attached to phosphorus are exchanged for R = Ph or H, and we describe how mechanochemistry was used to overcome limited solution reactivity with K(H3BPPh2BH3). Grinding three equivalents of K(H3BPPh2BH3) with UI3(THF)4 or LnI3 (Ln = Ce, Pr, Nd) allowed homoleptic complexes with the empirical formulas U(H3BPPh2BH3)3 (1), Ce(H3BPPh2BH3)3 (2), Pr(H3BPPh2BH3)3 (3), and Nd(H3BPPh2BH3)3 (4) to be prepared and subsequently crystallized in good yields (50-80%). Single-crystal XRD studies revealed that all four complexes exist as dimers or coordination polymers in the solid-state, whereas 1H and 11B NMR spectra showed that they exist as a mixture of monomers and dimers in solution. Treating 4 with THF breaks up the dimer to yield the monomeric complex Nd(H3BPPh2BH3)3(THF)3 (4-THF). XRD studies revealed that 4-THF has one chelating and two dangling H3BPPh2BH3- ligands bound to the metal to accommodate binding of THF. In contrast to the results with K(H3BPPh2BH3), attempting the same mechanochemical reactions with Na(H3BPH2BH3) containing the simplest phosphinodiboranate were unsuccessful; only the partial metathesis product U(H3BPH2BH3)I2(THF)3 (5) was isolated in poor yields. Despite these limitations, our results offer new examples showing how mechanochemistry can be used to rapidly synthesize molecular coordination complexes that are otherwise difficult to prepare using more traditional solution methods.
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Affiliation(s)
- Taylor V Fetrow
- Department of Chemistry, The University of Iowa, E331 Chemistry Building, Iowa City, Iowa 52242, USA.
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39
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Li Q, Wang F, Zhou X, Chen J, Tang C, Zhang L. Synergistical photo-thermal-catalysis of Zn2GeO4:xFe3+ for H2 evolution in NaBH4 hydrolysis reaction. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106321] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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40
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Marizy A, Geneste G, Garbarino G, Loubeyre P. High pressure polymorphism of LiBH 4 and of NaBH 4. RSC Adv 2021; 11:25274-25283. [PMID: 35478871 PMCID: PMC9036969 DOI: 10.1039/d1ra00816a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 07/08/2021] [Indexed: 01/15/2023] Open
Abstract
The pressure-induced structural changes in LiBH4 and in NaBH4 have been investigated experimentally up to 290 GPa by coupling Raman spectroscopy, infrared absorption spectroscopy and synchrotron X-ray diffraction. This data set is also analysed in the light of Density Functional Theory calculations performed up to 600 GPa. The [BH4]- unit appears to be remarkably resistant under pressure. NaBH4 remains stable in the known Pnma γ-phase up to 200 GPa and calculations predict a transition to a metallic polymeric C2/c phase at about 480 GPa. LiBH4 is confirmed to exhibit a richer polymorphism. A new Pnma orthorhombic phase VI is found to be stable above 60 GPa and there are hints of a possible phase VII above 160 GPa. DFT calculations predict that two other high pressure LiBH4 phases should appear at about 290 and 428 GPa. A very slight solubility of H2 inside phases II, III and V of LiBH4 is observed. A NaBH4(H2)0.5 complex is predicted to be stable above 150 GPa.
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Affiliation(s)
| | | | - Gaston Garbarino
- ESRF, The European Synchrotron 71 Avenue des Martyrs 38000 Grenoble France
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41
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Zeleňák V, Saldan I. Factors Affecting Hydrogen Adsorption in Metal-Organic Frameworks: A Short Review. NANOMATERIALS 2021; 11:nano11071638. [PMID: 34206689 PMCID: PMC8303527 DOI: 10.3390/nano11071638] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/14/2021] [Accepted: 06/18/2021] [Indexed: 02/02/2023]
Abstract
Metal–organic frameworks (MOFs) have significant potential for hydrogen storage. The main benefit of MOFs is their reversible and high-rate hydrogen adsorption process, whereas their biggest disadvantage is related to their operation at very low temperatures. In this study, we describe selected examples of MOF structures studied for hydrogen adsorption and different factors affecting hydrogen adsorption in MOFs. Approaches to improving hydrogen uptake are reviewed, including surface area and pore volume, in addition to the value of isosteric enthalpy of hydrogen adsorption. Nanoconfinement of metal hydrides inside MOFs is proposed as a new approach to hydrogen storage. Conclusions regarding MOFs with incorporated metal nanoparticles, which may be used as nanoscaffolds and/or H2 sorbents, are summarized as prospects for the near future.
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Affiliation(s)
- Vladimír Zeleňák
- Department of Inorganic Chemistry, Faculty of Science, Pavol Jozef Šafárik University in Košice, Moyzesova 11, 04154 Košice, Slovakia;
- Correspondence:
| | - Ivan Saldan
- Department of Inorganic Chemistry, Faculty of Science, Pavol Jozef Šafárik University in Košice, Moyzesova 11, 04154 Košice, Slovakia;
- Department of Physical and Colloid Chemistry, Faculty of Chemistry, Ivan Franko National University of Lviv, Kyryla and Mefodia 6, 79005 Lviv, Ukraine
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42
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Suárez-Alcántara K, Tena García JR. Metal Borohydrides beyond Groups I and II: A Review. MATERIALS 2021; 14:ma14102561. [PMID: 34069281 PMCID: PMC8156325 DOI: 10.3390/ma14102561] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/08/2021] [Accepted: 05/08/2021] [Indexed: 11/28/2022]
Abstract
This review consists of a compilation of synthesis methods and several properties of borohydrides beyond Groups I and II, i.e., transition metals, main group, lanthanides, and actinides. The reported properties include crystal structure, decomposition temperature, ionic conductivity, photoluminescence, etc., when available. The compiled properties reflect the rich chemistry and possible borohydrides’ application in areas such as hydrogen storage, electronic devices that require an ionic conductor, catalysis, or photoluminescence. At the end of the review, two short but essential sections are included: a compilation of the decomposition temperature of all reported borohydrides versus the Pauling electronegativity of the cations, and a brief discussion of the possible reactions occurring during diborane emission, including some strategies to reduce this inconvenience, particularly for hydrogen storage purposes.
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43
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Zhang Z, Wang L, Zhao P, Xiao Y, Hao H, Bao Y. Comparison Study of KBH 4 Spherical Agglomerates Prepared in Different Antisolvents: Mechanisms and Properties. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhengdong Zhang
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, China
| | - Liping Wang
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, China
| | - Pei Zhao
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, China
| | - Yuntian Xiao
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, China
| | - Hongxun Hao
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, China
| | - Ying Bao
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin 300072, China
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44
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Li S, Qiu P, Kang J, Ma Y, Zhang Y, Yan Y, Jensen TR, Guo Y, Zhang J, Chen X. Iodine-Substituted Lithium/Sodium closo-Decaborates: Syntheses, Characterization, and Solid-State Ionic Conductivity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:17554-17564. [PMID: 33821603 DOI: 10.1021/acsami.1c01659] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Solid-state electrolytes based on closo-decaborates have caught increasing interest owing to the impressive room-temperature ionic conductivity, remarkable thermal/chemical stability, and excellent deformability. In order to develop new solid-state ion conductors, we investigated the influence of iodine substitution on the thermal, structural, and ionic conduction properties of closo-decaborates. A series of iodinated closo-decaborates, M2[B10H10-nIn] (M = Li, Na; n = 1, 2, 10), were synthesized and characterized by thermal analysis, powder X-ray diffraction, and electrochemical impedance spectroscopy; the stability and ionic conductivity of these compounds were studied. It was found that with the increase of iodine substitution on the closo-decaborate anion cage, the thermal decomposition temperature increases. All M2[B10H10-nIn] exhibit an amorphous structure. The ionic conductivity of Li2[B10H10-nIn] is higher than that of the Li2[B10H10] parent compound. An ionic conductivity of 2.96 × 10-2 S cm-1 with an activation energy of 0.23 eV was observed for Li2[B10I10] at 300 °C, implying that iodine substitution can improve the ionic conductivity. However, the ionic conductivity of Na2[B10H10-nIn] is lower than that of Na2[B10H10] and increases with the increase of iodine substitution, which could be associated with the increase of the electrostatic potential, mass, and volume of the iodinated anions. Moreover, Li2[B10I10] offers a Li-ion transference number of 0.999, an electrochemical stability window of 3.3 V and good compatibility with the Li anode, demonstrating its potential for application in high-temperature batteries.
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Affiliation(s)
- Shouhu Li
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Pengtao Qiu
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jiaxin Kang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yiming Ma
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yichun Zhang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yigang Yan
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, China
| | - Torben R Jensen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, DK-8000 Aarhus, Denmark
| | - Yanhui Guo
- Department of Materials Science, Fudan University, Shanghai 200433, China
| | - Jie Zhang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuenian Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
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45
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Boström HB, Goodwin AL. Hybrid Perovskites, Metal-Organic Frameworks, and Beyond: Unconventional Degrees of Freedom in Molecular Frameworks. Acc Chem Res 2021; 54:1288-1297. [PMID: 33600147 PMCID: PMC7931445 DOI: 10.1021/acs.accounts.0c00797] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Indexed: 12/20/2022]
Abstract
ConspectusThe structural degrees of freedom of a solid material are the various distortions most straightforwardly activated by external stimuli such as temperature, pressure, or adsorption. One of the most successful design strategies in materials chemistry involves controlling these individual distortions to produce useful collective functional responses. In a ferroelectric such as lead titanate, for example, the key degree of freedom involves asymmetric displacements of Pb2+ and Ti4+ cations; it is by coupling these together that the system as a whole interacts with external electric fields. Collective rotations of the polyhedral units in oxide ceramics are another commonly exploited distortion, driving anomalous behavior such as negative thermal expansion-the counterintuitive phenomenon of volume contraction on heating. An exciting development in the field has been to take advantage of the interplay between different distortion types: generating polarization by combining two different polyhedral rotations, for example. In this way, degrees of freedom act as geometric "elements" that can themselves be combined to engineer materials with new and interesting properties. Just as the discovery of new chemical elements quite obviously diversified chemical space, we might expect that identifying new and different types of structural degrees of freedom to be an important strategy for developing new kinds of functional materials. In this context, the broad family of molecular frameworks is emerging as an extraordinarily fertile source of new and unanticipated distortion types, the vast majority of which have no parallel in the established families of conventional solid-state chemistry.Framework materials are solids whose structures are assembled from two fundamental components: nodes and linkers. Quite simply, linkers join the nodes together to form scaffolding-like networks that extend from the atomic to the macroscopic scale. These structures usually contain cavities, which can also accommodate additional ions for charge balance. In the well-established systems-such as lead titanate-node, linker, and extra-framework ions are all individual atoms (Ti, O, and Pb, respectively). But in molecular frameworks, at least one of these components is a molecule.In this Account, we survey the unconventional degrees of freedom introduced through the simple act of replacing atoms by molecules. Our motivation is to understand the role these new distortions play (or might be expected to play) in different materials properties. The various degrees of freedom themselves-unconventional rotational, translational, orientational, and conformational states-are summarized and described in the context of relevant experimental examples. The much-improved prospect for generating emergent functionalities by combining these new distortion types is then discussed. We highlight a number of directions for future research-including the design and application of hierarchically structured phases of matter intermediate to solids and liquid crystals-which serve to highlight the extraordinary possibilities for this nascent field.
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Affiliation(s)
- Hanna
L. B. Boström
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K.
- Max
Planck Institute for Solid State Research, Stuttgart 70569, Germany
| | - Andrew L. Goodwin
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K.
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46
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Dovgaliuk I, Senkovska I, Li X, Dyadkin V, Filinchuk Y, Chernyshov D. Kinetic Barriers and Microscopic Mechanisms of Noble Gas Adsorption by Nanoporous γ‐Mg(BH
4
)
2
Obtained by Means of Sub‐Second X‐Ray Diffraction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Iurii Dovgaliuk
- Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility 38000 Grenoble France
- Institut des Matériaux Poreux de Paris Ecole Normale Supérieure ESPCI Paris CNRS PSL Université 75005 Paris France
| | - Irena Senkovska
- Inorganic Chemistry I Technische Universität Dresden Bergstrasse 66 01069 Dresden Germany
| | - Xiao Li
- Institute of Condensed Matter and Nanosciences Université catholique de Louvain Place L. Pasteur 1348 Louvain-la-Neuve Belgium
| | - Vadim Dyadkin
- Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility 38000 Grenoble France
| | - Yaroslav Filinchuk
- Institute of Condensed Matter and Nanosciences Université catholique de Louvain Place L. Pasteur 1348 Louvain-la-Neuve Belgium
| | - Dmitry Chernyshov
- Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility 38000 Grenoble France
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47
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Dovgaliuk I, Senkovska I, Li X, Dyadkin V, Filinchuk Y, Chernyshov D. Kinetic Barriers and Microscopic Mechanisms of Noble Gas Adsorption by Nanoporous γ-Mg(BH 4 ) 2 Obtained by Means of Sub-Second X-Ray Diffraction. Angew Chem Int Ed Engl 2021; 60:5250-5256. [PMID: 33197112 DOI: 10.1002/anie.202015019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Indexed: 11/06/2022]
Abstract
Gas adsorption by porous frameworks sometimes results in structure "breathing", "pores opening/closing", "negative gas adsorption", and other phenomena. Time-dependent diffraction can address both kinetics of the guest uptake and structural response of the host framework. Using sub-second in situ powder X-ray diffraction, three intracrystalline diffusion scenarios have been evaluated from the isothermal kinetics of Ar, Kr, and Xe adsorption by nanoporous γ-Mg(BH4 )2 . These scenarios are dictated by two possible simultaneous transport mechanisms: diffusion through the intra- (i) and interchannel apertures (ii) of γ-Mg(BH4 )2 crystal structure. The contribution of (i) and (ii) changes depending on the kinetic diameter of the noble gas molecule and temperature regime. The lowest single activation barrier for the smallest Ar suggests equal diffusion of the atoms trough both pathways. Contrary, for the medium sized Kr we resolve the contributions of two parallel transport mechanisms, which tentatively can be attributed to the smaller barrier of the migration paths via the channel like pores and the higher barrier for the diffusion via narrow aperture between these channels. The largest Xe atoms diffuse only along 1D channels and show the highest single activation barrier.
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Affiliation(s)
- Iurii Dovgaliuk
- Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility, 38000, Grenoble, France.,Institut des Matériaux Poreux de Paris, Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL Université, 75005, Paris, France
| | - Irena Senkovska
- Inorganic Chemistry I, Technische Universität Dresden, Bergstrasse 66, 01069, Dresden, Germany
| | - Xiao Li
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place L. Pasteur, 1348, Louvain-la-Neuve, Belgium
| | - Vadim Dyadkin
- Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility, 38000, Grenoble, France
| | - Yaroslav Filinchuk
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place L. Pasteur, 1348, Louvain-la-Neuve, Belgium
| | - Dmitry Chernyshov
- Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility, 38000, Grenoble, France
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48
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Andersson MS, Grinderslev JB, Chen XM, Chen X, Häussermann U, Zhou W, Jensen TR, Karlsson M, Udovic TJ. Interplay between the Reorientational Dynamics of the B 3H 8 - Anion and the Structure in KB 3H 8. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:3716-3724. [PMID: 33841604 PMCID: PMC8023716 DOI: 10.1021/acs.jpcc.0c10186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/04/2021] [Indexed: 05/25/2023]
Abstract
The structure and reorientational dynamics of KB3H8 were studied by using quasielastic and inelastic neutron scattering, Raman spectroscopy, first-principles calculations, differential scanning calorimetry, and in situ synchrotron radiation powder X-ray diffraction. The results reveal the existence of a previously unknown polymorph in between the α'- and β-polymorphs. Furthermore, it was found that the [B3H8]- anion undergoes different reorientational motions in the three polymorphs α, α', and β. In α-KB3H8, the [B3H8]- anion performs 3-fold rotations in the plane created by the three boron atoms, which changes to a 2-fold rotation around the C 2 symmetry axis of the [B3H8]- anion upon transitioning to α'-KB3H8. After transitioning to β-KB3H8, the [B3H8]- anion performs 4-fold rotations in the plane created by the three boron atoms, which indicates that the local structure of β-KB3H8 deviates from the global cubic NaCl-type structure. The results also indicate that the high reorientational mobility of the [B3H8]- anion facilitates the K+ cation conductivity, since the 2-orders-of-magnitude increase in the anion reorientational mobility observed between 297 and 311 K coincides with a large increase in K+ conductivity.
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Affiliation(s)
- M. S. Andersson
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Göteborg SE-412 96, Sweden
- NIST
Center for Neutron Research, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - J. B. Grinderslev
- Interdisciplinary
Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, DK-8000 Aarhus, Denmark
| | - X.-M. Chen
- School
of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron
Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
| | - X. Chen
- School
of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron
Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan 453007, China
- College
of Chemistry and Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - U. Häussermann
- Department
of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Sweden
| | - W. Zhou
- NIST
Center for Neutron Research, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - T. R. Jensen
- Interdisciplinary
Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, DK-8000 Aarhus, Denmark
| | - M. Karlsson
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Göteborg SE-412 96, Sweden
| | - T. J. Udovic
- NIST
Center for Neutron Research, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
- Department
of Materials Science and Engineering, University
of Maryland, College Park, Maryland 20742-2115, United States
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49
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Recent Advances in Applications of Co-B Catalysts in NaBH4-Based Portable Hydrogen Generators. Catalysts 2021. [DOI: 10.3390/catal11020268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
This review highlights the opportunities of catalytic hydrolysis of NaBH4 with the use of inexpensive and active Co-B catalysts among the other systems of hydrogen storage and generation based on water reactive materials. This process is important for the creation of H2 generators required for the operation of portable compact power devices based on low-temperature proton exchange membrane fuel cells (LT PEM FC). Special attention is paid to the influence of the reaction medium on the formation of active state of Co-B catalysts and the problem of their deactivation in NaBH4 solution stabilized by alkali. The novelty of this review consists in the discussion of basic designs of hydrogen generators based on NaBH4 hydrolysis using cobalt catalysts and the challenges of their integration with LT PEM FC. The potential of using batch reactors in which there is no need to use aggressive alkaline NaBH4 solutions is discussed. Solid-phase compositions or pellets based on NaBH4 and cobalt-containing catalytic additives are proposed, the hydrogen generation from which starts immediately after the addition of water. The review made it possible to formulate the most acute problems, which require new sci-tech solutions.
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50
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Grinderslev JB, Jensen TR. Trends in the Series of Ammine Rare-Earth-Metal Borohydrides: Relating Structural and Thermal Properties. Inorg Chem 2021; 60:2573-2589. [PMID: 33499595 DOI: 10.1021/acs.inorgchem.0c03464] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ammine metal borohydrides display extreme structural and compositional diversity and show potential applications for solid-state hydrogen and ammonia storage and as solid-state electrolytes. Thirty-two new compounds are reported in this work, and trends in the full series of ammine rare-earth-metal borohydrides are discussed. The majority of the rare-earth metals (RE) form trivalent RE(BH4)3·xNH3 (x = 7-1) compounds, which possess an intriguing crystal chemistry changing with the number of ammonia ligands, varying from structures built from complex ions (x = 5-7), to molecular structures (x = 3, 4), one-dimensional chains (x = 2), and structures built from two-dimensional layers (x = 1). Divalent RE(BH4)2·xNH3 (x = 4, 2, 1) compounds are observed for RE2+ = Sm, Eu, Yb, with structures varying from molecular structures (x = 4) to two-dimensional layered (x = 2, 1) and three-dimensional structures (Yb(BH4)2·NH3). The crystal structure and composition of the compounds depend on the volume of the rare-earth ion. In all structures, NH3 coordinates to the metal, while BH4- has a more flexible coordination and is observed as a bridging and terminal ligand and as a counterion. RE(BH4)3·xNH3 (x = 7-5, 4) releases NH3 stepwise during thermal treatment, while mainly H2 is released for x ≤ 3. In contrast, only NH3 is released from RE(BH4)2·xNH3 due to the lower charge density on the RE2+ ion and higher stability of RE(BH4)2. The thermal stability of RE(BH4)3·xNH3 increase with increasing cation charge density for x = 5, 7, while it decreases for x = 4, 6. For x = 3, the thermal stability decreases with increasing charge density, due to the destabilization of the BH4- group, making it more reactive toward NH3. This research provides a large number of novel compounds and new insight into trends in the crystal chemistry of ammine metal borohydrides and reveals a correlation between the local metal coordination and the thermal stability.
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Affiliation(s)
- Jakob B Grinderslev
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - Torben R Jensen
- Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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