Article
Energy & Fuels
Song-Jeng Huang, Matoke Peter Mose
Summary: The impact of ball milling on the hydrogen storage capabilities of AZ61 magnesium alloys was investigated in this study, with a focus on understanding the underlying structure-property relationships. The structure of the AZ61 alloy was analyzed using x-ray diffraction, particle size, morphology, and Sievert's analysis. The results showed that ball milling changed the morphology and decreased the particle size of the powder samples, leading to an improvement in hydrogen storage performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Volodymyr A. Yartys, Colin J. Webb, Fermin Cuevas
Summary: The paper provides an overview of advanced in situ diffraction studies for probing the structure and reacting mechanisms of hydrogen and energy storage materials. These studies utilize high flux diffraction beam and high resolution measurements to establish the mechanism of phase-structural transformations and their kinetics. Various conditions, such as hydrogen/deuterium pressures and temperatures, as well as different charge-discharge states, are considered. The paper also highlights the contributions of Dr. Michel Latroche and summarises a long-standing collaboration between the co-authors in the field.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Lingchao Zhang, Xin Zhang, Wenxuan Zhang, Zhenguo Huang, Fang Fang, Juan Li, Limei Yang, Changdong Gu, Wenping Sun, Mingxia Gao, Hongge Pan, Yongfeng Liu
Summary: High thermal stability and sluggish absorption/desorption kinetics are limitations for using MgH2 as a hydrogen storage medium. Introducing a suitable catalyst, such as the novel nanoparticulate ZrNi, can significantly improve the hydrogen storage properties. The catalytic reaction of nano-ZrNi during the first de-/hydrogenation cycle forms active species that enhance the breaking and rebonding of H-H bonds and provide multiple hydrogen diffusion channels, leading to remarkably improved hydrogen absorption and desorption capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Chengshang Zhou, Ke Li, Tongwen Huang, Pei Sun, Li Wang, Yanshan Lu, Zhigang Zak Fang
Summary: This study demonstrates the in situ formation of nanocrystalline MgH2 by hydrogenation at room temperature and investigates the effects of hydrogenation variables on the nanostructure. The results show that hydrogenated samples under lower pressure have larger MgH2 nanocrystallites and improved dehydrogenation kinetics. The study identifies hydrogenation pressure, temperature, and defect density as critical parameters affecting the nucleation rate of MgH2.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Physical
Cong Peng, Yongtao Li, Qingan Zhang
Summary: This paper proposes a new approach to improve the sorption kinetics of magnesium hydride by catalyzing it with highly dispersed nickel nanoparticles. The experiment demonstrates that the in-situ formation of highly dispersed Ni nanoparticles in the MgH2 matrix significantly enhances the hydrogen desorption kinetics and retention rate of MgH2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Pei Liu, Jiajia Lian, Haipeng Chen, Baozhong Liu, Shixue Zhou
Summary: In situ formation of Mg2Ni on the Mg surface improves the hydrogen storage performance of the material. The in situ formed Mg2Ni facilitates the reactions during hydrogenation and dehydrogenation, leading to enhanced hydrogen sorption rate and lower dehydrogenation temperature.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Magda Peska, Katarzyna Smektalska, Julita Dworecka-Wojcik, Sylwia Terlicka, Wladyslaw Gasior, Wojciech Gierlotka, Adam Debski, Marek Polanski
Summary: This study presents a systematic investigation of the interactions between hydrogen and Mg-Ag alloys prepared by mechanical alloying. The alloys were found to be effectively synthesized with mechanical alloying, extending solubility limits compared to known phase diagrams. Further annealing enhanced synthesis to obtain well crystallized samples that could absorb significant amounts of hydrogen. Magnesium hydride and AgMg intermetallics were formed as residual products that did not react with hydrogen under the chosen conditions. Samples characterized directly after ball milling showed higher reaction kinetics with hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Jing Wen, Laetitia Laversenne, Marc Novelli, Thierry Grosdidier, Patricia de Rango
Summary: Efficient, simple, and safe processes like room temperature forging are required for the development of hydrogen storage in metal hydrides. Samples made from Mg and Ni powders through this method show only Mg and Ni phases. Deuterium absorption occurs at temperatures as low as 250 degrees C due to basal fiber texture and structural defects induced by forging. Deuterium-induced mobility of metal atoms is evidenced by the absence of Mg and Ni reaction in the absence of deuterium even after annealing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jiaxin Zhang, Xin Ding, Ruirun Chen, Wenchao Cao, Yanqing Su, Jingjie Guo
Summary: A Mg96Y2Zn2 alloy with a high proportion of long period stacking ordered (LPSO) structure was prepared, and it formed a YH2 + Mg(Zn) composite after hydrogen ab/desorption, exhibiting lower desorption temperature and enhanced hydrogen storage capacity compared to pure MgH2. The hydrogenation process of the alloy was governed by one-dimensional diffusion rate of hydrogen atoms, while the dehydrogenation process was dominated by two-dimensional interface movement of the metal/hydride phases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Adam Debski, Sylwia Terlicka, Magda Peska, Agnieszka Bigos, Wladyslaw Gasior, Wojciech Gierlotka, Marek Polanski
Summary: In this paper, the interactions between mechanically alloyed Mg6Pd1-xAgx alloys and hydrogen were studied. The structures of the alloys were analyzed using X-ray diffraction (XRD), which confirmed the presence of a single Mg6Pd-type phase for samples with up to x=0.5 silver concentration. The kinetics of hydrogenation process and the properties of synthesized hydride were investigated using a Sievert-type sorption analyzer and differential scanning calorimetry (DSC) with thermogravimetric analysis (TGA). The results showed that partial substitution of palladium with silver improved the hydrogen sorption kinetics compared to pure Mg6Pd intermetallic phase, but resulted in lower hydrogen content. The influence of silver on the decomposition kinetics was also observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Jialing Li, Ren Zou, Yajun Cui, Gangtie Lei, Zhi Li, Hujun Cao
Summary: Researchers synthesized an N ion-doped Na2TiO3 catalyst to improve the dehydrogenation properties of MgH2, resulting in lower peak temperature and increased hydrogen release. The modified MgH2 also showed improved cycle stability and high reversible hydrogen capacity.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
Materials Science, Multidisciplinary
M. Burgstaller, H. Lund, M. O'Sullivan, H. Huppertz
Summary: The effect of potassium content on the hydrogen reduction of molybdenum trioxide to molybdenum dioxide was studied. It was found that increasing potassium content leads to a decrease in reduction rate, an increase in the fractional content of gamma-Mo4O11 during the reduction process, and an increase in grain size of the resulting MoO2 powder.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Chemistry, Physical
Anxin Li, Minfeng Chen, Qinghua Tian, Xiang Han, Jizhang Chen
Summary: Research has found that using zinc powder (Zn-P) as an anode can solve the issues of dendritic growth and parasitic reactions in zinc-ion batteries. By developing a simple method to form an indium metal protective layer on the surface of Zn-P, corrosion and hydrogen evolution can be effectively inhibited, leading to improved cyclability of the battery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Han Yu, Ying Cheng, Yaokun Fu, Lu Zhang, Sanyang Guo, Yuan Li, Wei Zhang, Shumin Han
Summary: In this study, a facile method was used to cover MgH2 with amorphous carbon formed in situ, resulting in the MgH2-CPF composite material. This material exhibited higher dehydrogenation rate and absorption capacity at lower temperatures, and the addition of carbon layer reduced the apparent activation energy of the reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
D. Ramimoghadam, L. Naheed, S. E. Boyd, C. L. Brown, T. A. Webb, E. MacA. Gray, C. J. Webb
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Nazanin Rahimi, Randolph A. Pax, Evan MacA Gray
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Engineering, Electrical & Electronic
Rasoul Garmabdari, Mojtaba Moghimi, Fuwen Yang, Evan Gray, Junwei Lu
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2020)
Article
Chemistry, Physical
Michael Hirscher, Volodymyr A. Yartys, Marcello Baricco, Jose Bellosta von Colbe, Didier Blanchard, Robert C. Bowman, Darren P. Broom, Craig E. Buckley, Fei Chang, Ping Chen, Young Whan Cho, Jean-Claude Crivello, Fermin Cuevas, William I. F. David, Petra E. de Jongh, Roman Denys, Martin Dornheim, Michael Felderhoff, Yaroslav Filinchuk, George E. Froudakis, David M. Grant, Evan MacA Gray, Bjorn C. Hauback, Teng He, Terry D. Humphries, Torben R. Jensen, Sangryun Kim, Yoshitsugu Kojima, Michel Latroche, Hai-Wen Li, Mykhaylo Lototskyy, Joshua W. Makepeace, Kasper T. Moller, Lubna Naheed, Peter Ngene, Dag Noreus, Magnus Moe Nygard, Shin-ichi Orimo, Mark Paskevicius, Luca Pasquini, Dorthe B. Ravnsbaek, M. Veronica Sofianos, Terrence J. Udovic, Tejs Vegge, Gavin S. Walker, Colin J. Webb, Claudia Weidenthaler, Claudia Zlotea
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Review
Chemistry, Inorganic & Nuclear
S. S. Setayandeh, C. J. Webb, E. Mac A. Gray
PROGRESS IN SOLID STATE CHEMISTRY
(2020)
Article
Chemistry, Physical
L. Naheed, K. E. Lamb, E. MacA. Gray, C. J. Webb
Summary: Calculating gas sorption isotherms requires accurate knowledge of the void volume in the sample cell, which changes with sample variations. In experiments on porous materials, the adsorbate volume is typically considered the pore volume, and high pressure experiments are needed to extract information on adsorbate volume and density.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2021)
Article
Chemistry, Physical
Samaneh Sadat Setayandeh, Tim Gould, Aminollah Vaez, Evan Gray
Summary: Density functional theory is increasingly used for predicting and understanding hydrogen storage materials, with good agreement on electron band structures but significant disparities in phonon band structures. Different calculation approaches may cause these disparities. The study found that electron bands have excellent agreement, while phonon properties are sensitive to calculated lattice constants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Lubna Naheed, Miriam Koppel, Maarja Paalo, Khadija Alsabawi, Krystina E. Lamb, Evan MacA. Gray, Alar Janes, Colin J. Webb
Summary: The properties of the adsorbed hydrogen phase in three carbide derived carbons have been studied, and it was found that all three CDCs had the same maximum adsorbate density, with the adsorption proportional to the total pore volume.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
E. Math. Gray
Summary: A thermodynamic model is proposed to aid in selecting compatible pairs of hydrogen storage alloys for multi-stage metal-hydride compressors. The model is based on ideal compressor concept with constraints on alloy selection due to thermodynamic characteristics, including pressure hysteresis and plateau slope. Experimentally determined effects such as curved van ?t Hoff line are considered in a case study of a two-stage compressor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Samaneh Sadat Setayandeh, Tim Gould, Aminollah Vaez, Keith McLennan, Nicolas Armanet, Evan Gray
Summary: This study examined the calculation methods and results of the partial atomic volume of hydrogen in interstitial metal hydrides, finding that v(H) is rather robust against different calculation methods, allowing for a meaningful comparison and validation of theoretical and experimental results.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Md Alamgir Hossain, Ripon K. Chakrabortty, Sondoss Elsawah, Evan Mac A. Gray, Michael J. Ryan
Summary: This study introduces a hybrid deep learning model to accurately forecast wind power generation at the Boco Rock Wind Farm in Australia, achieving significant improvements in accuracy compared to other advanced models through parameter tuning and optimization algorithm.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Chemistry, Physical
E. MacA Gray, C. J. Webb
Summary: The pressure-composition isotherm is the most important measurement for a new hydrogen storage material, which captures the storage conditions and the amount of hydrogen stored. The Sieverts technique is the most popular experimental approach for constructing such isotherms, where the amount of hydrogen absorbed or desorbed by the sample can be inferred from measurements of the hydrogen pressure. This study discusses the factors contributing to good performance and presents a Figure of Merit for evaluating the apparatus performance in combination with the sample.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Mostafa Rezaei, Alexandr Akimov, Evan MacA Gray
Summary: This study examines the sensitivity of the levelised cost of hydrogen (LCOH) produced from solar photovoltaic (PV) electricity to four critical factors. The results highlight the importance of carefully selecting the location to achieve a high PV capacity factor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Automation & Control Systems
Md Alamgir Hossain, Evan Gray, Junwei Lu, Md Rabiul Islam, Md Shafiul Alam, Ripon Chakrabortty, Hemanshu Roy Pota
Summary: This article proposes a novel framework, CEMOLS, to improve the prediction accuracy of very short-term wind power generation. The framework combines CEEMDAN, MBO, and LSTM models and demonstrates an improvement in forecasting accuracy compared to the benchmark model.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Energy & Fuels
E. MacA Gray, C. J. Webb
JOURNAL OF PHYSICS-ENERGY
(2020)
