Article
Nanoscience & Nanotechnology
X. L. Zhang, X. Zhang, L. C. Zhang, Z. G. Huang, F. Fang, J. J. Hu, Y. X. Yang, M. X. Gao, H. G. Pan, Y. F. Liu
Summary: Nano-ZrO2 catalyst synthesized through a solvothermal process exhibits superior catalytic activity and hydrogenation kinetics in MgH2 for hydrogen storage, enabling hydrogen release and uptake at lower temperatures.
MATERIALS TODAY NANO
(2022)
Article
Engineering, Environmental
Yongyang Zhu, Shaoyang Shen, Liuzhang Ouyang, Jiangwen Liu, Hui Wang, Zhenguo Huang, Min Zhu
Summary: This study reports an economical method to synthesize Mg(BH4)(2) by converting B-O bonds in widely available borates or boric acid to B-H. This method avoids expensive boron sources and high pressure and temperature conditions, significantly reducing costs, and could be an alternative to the current synthesis processes of Mg(BH4)(2).
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Xuancheng Wang, Xuezhang Xiao, Jiaguang Zheng, Zhouming Hang, Wenping Lin, Zhendong Yao, Meng Zhang, Lixin Chen
Summary: The study shows that ball-milling magnesium borohydride with titanium nano-particles results in enhanced hydrogen release, improved dehydrogenation kinetics, and lower activation energy. The catalyzed magnesium borohydride also exhibits high reversibility during partial dehydrogenation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Yongyang Zhu, Jianding Li, Limei Yang, Xu-Sheng Yang, Qing Zhou, Renheng Tang, Shaoyang Shen, Liuzhang Ouyang
Summary: Metal borohydrides have high hydrogen storage capacities and are extensively studied. However, developing a low-cost and high-efficiency closed loop of hydrolysis and regeneration is challenging. This work provides an overview of the latest advances in hydrolysis and regeneration processes of Li(Na)BH4 and Mg(BH4)2, with a focus on NaBH4 hydrolysis and regeneration. The development of catalysts, synthesis techniques, and reducing agents for NaBH4 regeneration are discussed. The use of low-cost transition metal-based catalysts has shown great potential for catalyzing the hydrolysis reaction.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Robert T. Bell, Nicholas A. Strange, Noemi Leick, Vitalie Stavila, Mark E. Bowden, Tom S. Autrey, Thomas Gennett
Summary: The use of an organic borohydride salt additive, tetramethylammonium borohydride (TMAB), has been shown to enhance the chemical stability and thermal cyclability of Mg(BH4)(2) melt. This finding is significant for applications in hydrogen storage and magnesium battery technologies.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Noemi Leick, Ba L. Tran, Mark E. Bowden, Thomas Gennett, Tom Autrey
Summary: This study investigated the thermal stability of coordination complexes formed between different glymes with Mg(BH4)(2), revealing diverse phase transitions, speciations, and decomposition pathways despite their structural similarities.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Lingchao Zhang, Ke Wang, Yongfeng Liu, Xin Zhang, Jianjiang Hu, Mingxia Gao, Hongge Pan
Summary: The study successfully reduced the dehydrogenation onset temperature of MgH(2) by synthesizing TiNb(2)O(7) composite oxide catalyst, achieving more efficient hydrogen storage and release. Additionally, the catalyst exhibited stable performance at low temperatures and good cycling stability.
Article
Materials Science, Multidisciplinary
Yujie Lv, Bao Zhang, Haixiang Huang, Bogu Liu, Wei Lv, Jianguang Yuan, Guanglin Xia, Xuebin Yu, Dalin Sun, Ying Wu
Summary: Metal borohydride ammoniates have shown promise as hydrogen storage materials, but are hindered by high desorption temperature and ammonia release. By adding NbF5 to Mg(BH4)2·2NH3, lower onset dehydriding temperatures (53-57°C) and higher dehydriding capacities (5.6 wt.%-8.2 wt.%) were achieved with complete suppression of ammonia. The addition of NbF5 also resulted in faster hydrogen release and lower activation energy. Mechanically reacting Mg(BH4)2·2NH3 with NbF5 leads to the formation of dual-metal (Mg, Nb) borohydride ammoniate and MgF2, improving hydrogen diffusion during dehydrogenation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ke Wang, Xin Zhang, Yongfeng Liu, Zhuanghe Ren, Xuelian Zhang, Jianjiang Hu, Mingxia Gao, Hongge Pan
Summary: This study developed a novel graphene-guided nucleation and growth process to prepare N-doped Nb2O5 nanorods, which significantly improved the hydrogen storage properties of MgH2. MgH2 doped with the nanorods released a substantial amount of hydrogen at lower temperatures, and demonstrated faster kinetics in reloading hydrogen.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Zhiqiang Lan, Xiaobin Wen, Liang Zeng, Ziqi Luo, Huiren Liang, Weitao Shi, Feifan Hong, Haizhen Liu, Hua Ning, Wenzheng Zhou, Jin Guo
Summary: The incorporation of (Ni-V2O3)@C nanoparticles was introduced to enhance the hydrogen storage performance of Mg/MgH2 systems. The composite sample exhibited improved hydrogenation and dehydrogenation kinetics, with a lower initial hydrogenation temperature and higher hydrogen absorption and desorption capacities compared to pristine MgH2. The addition of (Ni-V2O3)@C nanoparticles acted as a hydrogen pump, promoting hydrogen diffusion and dissociation within the Mg/MgH2 system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Hui Luo, Yunshu Yang, Liwen Lu, Guangxu Li, Xinhua Wang, Xiantun Huang, Xiaoma Tao, Cunke Huang, Zhiqiang Lan, Wenzheng Zhou, Jin Guo, Haizhen Liu
Summary: In this study, a two-dimensional Ti3CN MXene was synthesized and added to the Li-Mg-B-H composite, resulting in a reduction in the dehydrogenation temperature and induction period of the composite. The reversible capacity and capacity retention ratio of the composite were maintained at high levels. Micro-structure studies revealed the transformation of Ti3CN into highly-dispersed nano-TiB2, which acted as an active catalyst to improve the kinetics and reversibility of the composite. This research provides insights into the role of MXene in tailoring the hydrogen storage properties of metal borohydride-based composites.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Wojciech Olszewski, Carlo Marini, Satoshi Kajiyama, Masashi Okubo, Atsuo Yamada, Takashi Mizokawa, Naurang Lal Saini, Laura Simonelli
Summary: The local structures of Ti based MXene-type electrode materials were investigated using Ti K-edge X-ray absorption fine structure measurements. The effects of temperature on the local bond lengths and their stiffness were studied. Selective etching was found to significantly affect the local structural properties of Ti based MXene materials, resulting in increased interatomic distances and higher achievable performances. These results highlight the importance of local atomic correlations as limiting factors in the diffusion capacity of ion batteries.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Yantao Zhao, Yanfei Yin, Song Liang, Fuqiang Huang
Summary: Interfacial charge storage derived from spin-polarized electrons stored on the surface of iron metal nanoparticles can achieve a capacity far beyond the traditional conversion mechanism. By intentionally utilizing the pulverization phenomenon of iron oxide to in situ form nano-sized iron particles and create Fe/Li2O interfaces, the capacity of the energy storage system can be significantly increased.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Noemi Leick, Nicholas A. Strange, Andreas Schneemann, Vitalie Stavila, Karl Gross, Nancy Washton, Amy Settle, Madison B. Martinez, Thomas Gennett, Steven T. Christensen
Summary: This study utilizes nanoencapsulation and chemical additives simultaneously to modify borohydrides by using atomic layer deposition (ALD). The use of trimethylaluminum and water in the ALD process significantly improves the low-temperature H2 capacity and desorption kinetics of magnesium borohydride, while suppressing the release of diborane. These results suggest the potential of ALD as a method to functionalize solid-state H2 storage materials.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Jianjun Liu, Yong Ma, Jinggang Yang, Lei Sun, Dongliang Guo, Peng Xiao
Summary: Hydrogen energy is an excellent carrier for connecting various renewable energy sources, but due to the flammability and low density of hydrogen, storage technology is crucial. Metal borohydrides, with high hydrogen density, have potential for solid-state hydrogen storage, but challenges include high sorption temperature, slow kinetics, and poor reversibility.
FRONTIERS IN CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Raphael Schuler, Federico Bianchini, Truls Norby, Helmer Fjellvag
Summary: A near-broken-gap alignment between p-type FeWO4 and n-type Fe2WO6 is reported, serving as a model pair for Ohmic direct junction thermoelectrics. Experimental data and computational modeling support the proposed formation of this near-broken-gap junction, providing insights into the unusual band overlap mechanism with Fe-3d character at the band edges.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Perizat Berdiyeva, Anastasiia Karabanova, Didier Blanchard, Bjorn C. Hauback, Stefano Deledda
Summary: This study used in-situ neutron imaging to investigate the ammonia sorption reaction in a SrCl2-Expanded Natural Graphite (ENG) composite, revealing the formation of Sr(NH3)(8)Cl-2 upon ammonia uptake and the stepwise release of ammonia resulting in the formation of Sr(NH3)Cl-2. Neutron imaging also allowed for the evaluation of heat conductivity in the stainless-steel honeycomb and showed that heat is primarily transferred through the ENG matrix. Additionally, neutron tomography was performed to ensure the stability of the THS system and composite material during ammonia cycling experiments.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Nanoscience & Nanotechnology
Anastasiia Karabanova, Kenneth Dahl Knudsen, Perizat Berdiyeva, Leide P. Cavalcanti, Yun Liu, Michel van der Pal, Stefano Deledda, Didier Blanchard
Summary: This study utilized SANS, X-ray diffraction, and sorption measurements to investigate the structural evolution of a SrCl2-expanded natural graphite composite during ammonia absorption and desorption. Structural changes were found to affect absorption rate, while having no significant impact on desorption rate. Furthermore, the formation of nanopores significantly enhanced absorption kinetics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Correction
Thermodynamics
Anastasiia Karabanova, Perizat Berdiyeva, Michel van der Pal, Rune E. Johnsen, Stefano Deledda, Didier Blanchard
APPLIED THERMAL ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Anders Brennhagen, Carmen Cavallo, David S. Wragg, Ponniah Vajeeston, Anja O. Sjastad, Alexey Y. Koposov, Helmer Fjellvag
Summary: Na-ion batteries are promising solutions for energy storage due to low-cost and abundant materials. Bismuth molybdate is a promising anode material for Na-ion batteries, operating through a conversion/alloying mechanism. However, capacity degradation is caused by increased irreversibility of the sodiation reactions and the formation of a hexagonal phase Na3Bi.
Article
Energy & Fuels
Magnus H. Sorby, Fredrik Martinsen, Smagul Zh. Karazhanov, Bjorn C. Hauback, Erik S. Marstein
Summary: In this study, the location of oxygen ions in the crystal structure of yttrium oxyhydride was determined to be tetrahedral sites through synchrotron radiation and neutron powder diffraction measurements. This finding is significant for understanding the optoelectronic properties of the material.
Article
Chemistry, Multidisciplinary
Kanimozhi Balakrishnan, Vasu Veerapandy, Helmer Fjellvag, Ponniah Vajeeston
Summary: A comprehensive study on the physical and chemical properties of SnO2 polymorphs was conducted, aiming to explore their feasibility and stability for practical applications. It was found that the rutile structure showed the most promise, but other polymorphs also exhibited potential.
Article
Chemistry, Physical
Jussara Barale, Erika M. Dematteis, Giovanni Capurso, Bettina Neuman, Stefano Deledda, Paola Rizzi, Fermin Cuevas, Marcello Baricco
Summary: This study focuses on the industrial production of the alloy TiFe0.85Mn0.05 as an H2 carrier in metal hydride-based hydrogen storage systems. The experimental results show that the alloy exhibits fast kinetics, good resistance to gas impurities, and storage stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Rashmi Dahal, Jenny G. Vitillo, Anna C. Asland, Christoph Frommen, Stefano Deledda, Olena Zavorotynska
Summary: Magnesium borohydride (Mg(BH4)(2)) is a solid-state hydrogen storage compound that has high hydrogen densities and low operational temperature. This study used spectroscopic methods to investigate the reaction intermediates and provided additional insights into this decomposition reaction.
Article
Chemistry, Physical
Erika Michela Dematteis, Jussara Barale, Giovanni Capurso, Stefano Deledda, Magnus H. Sorby, Fermin Cuevas, Michel Latroche, Marcello Baricco
Summary: Hydrogen, an efficient energy carrier produced from renewable sources, plays a vital role in the transition towards CO2-free energy. This study focuses on Ti-rich Ti(Fe,Mn)0.90 alloys and their deuterides, determining their crystal structure and analyzing the influence of Mn substitution on structural properties during reversible deuterium loading. The research provides valuable insights into hydrogen storage, structural knowledge, and the application of TiFe-type alloys in integrated hydrogen tank for energy storage systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Green & Sustainable Science & Technology
Cathrine Kyung Won Solem, Stefano Deledda, Gabriella Tranell, Ragnhild E. Aune
Summary: Up to 10% of metallic aluminum production is lost due to dross formation, causing environmental issues and toxic gas generation. A sampling procedure for collecting representative dross samples and a methodology for analyzing and evaluating the results have been developed. XRD analysis and cryomilling proved effective in analyzing the dross samples, revealing the influence of sampling location and particle size fraction on dross characteristics. This research provides insights for minimizing aluminum loss from dross formation.
JOURNAL OF SUSTAINABLE METALLURGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Aleksandra Mielewczyk-Gryn, Shuhao Yang, Maria Balaguer, Ragnar Strandbakke, Magnus H. Sorby, Iga Szpunar, Agnieszka Witkowska, Sebastian Wachowski, Jose M. Serra, Alexandra Navrotsky, Maria Gazda
Summary: This study investigates the formation energetics and stability of BaLnCo(2)O(6-delta) (Ln = La, Pr, Nd, and Gd) (BLnC) and BaGd1-xLaxCo2O6-delta, where x = 0.2, 0.5, and 0.7 (BGLC) double perovskite cobaltites under high water partial pressure. These materials have potential applications in electrochemical devices as positrodes. It is found that all investigated materials are thermodynamically stable relative to binary oxides and exhibit exothermic enthalpies of formation. The BGLC compounds show higher negative formation enthalpies compared to single-Ln compositions, but the BLnC series demonstrate better chemical stability under high steam pressures.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ragnar Strandbakke, David S. Wragg, Magnus H. Sorby, Matylda N. Guzik, Anette E. Gunnaes, Iga Szpunar, Sebastian Lech Wachowski, Maria Balaguer, Patricia A. Carvalho, Aleksandra Mielewczyk-Gryn, Jose M. Serra, Truls Norby
Summary: BGLC compositions with large compositional ranges of Ba, Gd, and La show significant compositional flexibility and the ability to tune functional properties, as well as anisotropic chemical expansion.
DALTON TRANSACTIONS
(2022)
