Article
Chemistry, Physical
Arif Hariyadi, Suwarno Suwarno, Roman Denys, Jose Bellosta von Colbe, Tor Oskar Saetre, Volodymyr Yartys
Summary: Hydrides of the AB(2) Laves type alloys show efficient hydrogen storage capabilities and are suitable for designing high-performance hydrogen storage devices operating at ambient conditions. Experimental results indicate that the hydrogen absorption and desorption processes are jointly influenced by hydrogen diffusion and grain boundary nucleation, with increasing hydrogen content in the hydride leading to lower activation energies.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Shiqian Zhao, Hui Wang, Renzong Hu, Wei Jiang, Jiangwen Liu, Liuzhang Ouyang, Min Zhu
Summary: The study reveals that the as-cast LaY2Ni10.5 multi-phase alloy can be prepared into single-phase alloys with different structures by annealing at different temperatures. Y atoms preferentially substitute La in the [A(2)B(4)] subunit of hexagonal and rhombohedral superlattice structures, affecting the structural stability of the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ivan Romanov, Vasily Borzenko, Alexey Eronin, Alexey Kazakov
Summary: Experimental study showed that the electrostatic field had no effect on the established equilibrium in the hydrogen-alloy system, but noticeably slowed down the process of hydrogen absorption under specific conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Fei Long, Sean Hanlon, Mark R. Daymond
Summary: S/TEM imaging has revealed that hydrides precipitated in Zr-2.5Nb pressure tube alloy under different stress conditions exhibit distinct morphologies. The direction of precipitation and the heat resistance of the hydrides vary depending on whether they were formed under stress or stress-free conditions. The applied stress also impacts the location of hydride precipitation within differently oriented Zr grains.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Physical
Yue Zhang, Ming Zhang, Dongming Liu, Zhixin Ba, Yongtao Li, Tingzhi Si, Qingan Zhang
Summary: The effects of solid-state hydrogen introduction on the oxidation combustion property and mechanism of Al2Mg alloy were investigated. It was found that hydrogenation can lower the starting combustion temperature of Al2Mg alloy and change its oxidation mechanism. Various oxides such as MgAl2O4, γ-Al2O3, and α-Al2O3 were formed during the oxidation of hydrogenated Al2Mg alloy, while AlN was hardly generated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Peng Li, Hui Wang, Wei Jiang, Jiangwen Liu, Liuzhang Ouyang, Min Zhu
Summary: The addition of In and Al to MgNi-based amorphous alloy can improve the crystallization temperature of the amorphous phase and hinder the formation of crystalline hydride, leading to enhanced cycling performance. Therefore, optimizing the alloy composition is crucial for improving the performance of MgNi-based alloys, and multi-component composition is beneficial for enhancing their structural and cyclic stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Chengguan Zhang, Xavier Balandraud, Yongjun He
Summary: The coexistence of both austenite and martensite is a common characteristic in Shape Memory Alloys (SMAs). The multiple-domain microstructures, consisting of austenite, martensite twins, and individual martensite variants, evolve collectively during the phase transformation, affecting the material's macroscopic response. This paper presents an experimentally observed interface consisting of five domains in a Ni-Mn-Ga single-crystal, and analyzes the effects of thermal loading path and material initial state on the domain pattern formation.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Energy & Fuels
Talal Alqahtani
Summary: The combination of a metal hydride and a water pump has attracted significant interest. However, the system's efficiency is low due to the need for substantial external heat input. Storing the heat generated by the exothermic reaction in a phase change material and reusing it during the endothermic reaction improves the pump's efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Rama Srinivas Varanasi, Motomichi Koyama, Hiroyuki Saitoh, Reina Utsumi, Toyoto Sato, Shin-ichi Orimo, Eiji Akiyama
Summary: The phase transformations and microstructure changes during the depressurization of non-hydrogenated and hydrogenated Fe-Mn-Si-Cr alloy were investigated. Understanding the effects of hydrogenation on the stability of the austenite phase in Fe-based alloys is crucial.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Physics, Multidisciplinary
Zihan Zhang, Tian Cui, Michael J. Hutcheon, Alice M. Shipley, Hao Song, Mingyang Du, Vladimir Z. Kresin, Defang Duan, Chris J. Pickard, Yansun Yao
Summary: Hydrogen-based superconductors offer a way to achieve room-temperature superconductivity, but their immediate application is limited by the high pressures required. This study proposes a strategy for designing high-temperature superconductors at low pressures by alloying small-radius elements and hydrogen to form ternary H-based superconductors with alloy backbones.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Swaminathan Ganesan, Sampath Vedamanickam
Summary: This study investigates the influence of upper cycle temperature and applied stress on the functional properties of an SMA during partial thermomechanical cycling. The results show that decreasing the upper cycle temperature and stress level can improve the stability and lifespan of SMAs.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2022)
Article
Thermodynamics
David D. S. Silva, Nilmario G. Guedes, Danniel F. Oliveira, Ramon A. Torquarto, Francisco W. E. L. A. Junior, Bruno A. S. G. Lima, Francisco R. P. Feitosa, Rodinei M. Gomes
Summary: This study characterizes the effect of long-term thermal cycling on transformation temperatures and thermodynamic parameters of polycrystalline CuAlBeCr shape memory alloy. The results show that thermal cycling significantly impacts the transformation behavior of the alloy, with changes observed in the number of reactions and temperature ranges for the reverse martensitic transformation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
M. Liu, P. Diercks, A. Manzoni, J. Cizek, U. Ramamurty, J. Banhart
Summary: The study found that thermal cycling of a Ni-excess NiTi alloy led to a continuous build-up of defect structure until saturation, resulting in the formation of two types of defects, pure dislocations and vacancies attached to dislocations.
Article
Nanoscience & Nanotechnology
Sung Hwan Hong, Hae Jin Park, Gyeol Chan Kang, Young Seok Kim, Gian Song, Ki Buem Kim
Summary: The designed AB intermetallic compound type high-entropy metallic glass precursor shows high thermal stability and polymorphic crystallization behavior, leading to the formation of nanocrystalline single-phase high-entropy alloy. The nucleation and growth rates for crystallization strongly depend on the annealing temperature. This discovery provides an effective way to develop nanocrystalline single-phase high-entropy alloys by designing intermetallic compound type high-entropy metallic glass precursors.
SCRIPTA MATERIALIA
(2022)
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
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)