Article
Chemistry, Physical
Yu Liu, Mark Paskevicius, Terry D. Humphries, Craig E. Buckley
Summary: This study demonstrates a one-step ball milling method using Mg2N3 as a reducing agent to regenerate sodium borohydride (NaBH4) from NaBO2$4H2O and produce ammonia gas. This simple process can generate two carbon-free hydrogen carriers suitable for energy export from renewable sources.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Agata Baran, Michal Kniola, Tomasz Rogala, Marek Polanski
Summary: A new route of materials synthesis, high-temperature, high-pressure reactive planetary ball milling (HTPRM), is introduced in this study. It allows for the controlled mechanosynthesis of materials at temperatures up to 450 degrees C and pressures up to 100 bar of hydrogen. The successful synthesis of magnesium hydride is presented as an example of the application, demonstrating the great potential of this technique for the mechanochemical synthesis of materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Mateusz Balcerzak, Tomasz Runka, Zbigniew Sniadecki
Summary: BCC alloys with carbon catalysts show improved hydrogenation kinetics, lower desorption temperature, and enhanced hydrogen absorption rate, making them promising materials for hydrogen storage applications.
Article
Energy & Fuels
Zeming Yuan, Xiaoming Li, Tao Li, Tingting Zhai, Yonghua Lin, Dianchen Feng, Yanghuan Zhang
Summary: Ball milling can greatly improve the hydrogen storage performances of Sm5Mg41 alloy by increasing surface activity and introducing nanocrystalline grain boundaries for enhanced hydrogen diffusion. The alloy milled for 10 hours exhibits the best hydrogen storage property.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Xusheng Liu, Shaopeng Wu, Xiaolan Cai, Lei Zhou
Summary: This paper describes the efficient preparation of an Mg2Ni alloy for hydrogen storage via high-energy ball milling mechanical alloying. The alloy's amorphisation degree increases with ball-milling time. After 4 hours of ball milling, partially amorphous alloys show the best hydrogen storage performance. Partial substitution of Ni with Cr and Mn improves the thermodynamics, kinetics, and cycling performance of the alloy. Mg2Ni0.8Mn0.2 exhibits the best cycling and hydrogen absorption/desorption kinetics.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Shixuan He, Guangxu Li, Ye Wang, Liu Liu, Zhaoqiu Lu, Li Xu, Peng Sheng, Xinhua Wang, Haiqiang Chen, Cunke Huang, Zhiqiang Lan, Wenzheng Zhou, Jin Guo, Haizhen Liu
Summary: TiB2 was introduced by ball milling to improve the decomposition performance of AlH3, forming Al-Ti-B solid solution through reaction. The AlH3 + 2.5 wt% TiB2 ball milled at 225 rpm for 108 min showed the best decomposition performance, starting decomposition at 78°C and stopping at 130°C with 8.5 wt% hydrogen released. This study provides an efficient strategy to achieve high hydrogen capacity and low decomposition temperature of metastable AlH3 through proper ball milling with metal borides.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jesus Lopez-Sanchez, Elena Navarro, Freddy Rodriguez-Granado, Aida Serrano, Pilar Marin
Summary: In this study, novel hybrid materials based on soft nanocrystalline Fe73.9Si15.5Cu1Nb3B6.6 alloy were designed to reduce particle size and develop different compositional, structural, and magnetic properties. Innovative processes combining mixer, vibratory, and planetary motions were carried out under dry and wet routes to achieve reduced sub-micron particle size distributions and promote the formation of different hybrid compounds. The results obtained show structural and magnetic evolution dominated by the presence of ferromagnetic alpha-Fe3Si nanocrystals, with the wet approach supported by glycerol revealing a new functionality for the Fe73.9Si15.5Cu1Nb3B6.6 alloy. This work opens up a new physicochemical method for the development of multiphase compounds with potential applications, demonstrating a controlled formation of different hybrid compounds in an amorphous ferromagnetic matrix.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Shaopeng Wu, Xusheng Liu, Xiaolan Cai
Summary: The addition of Cu9Al4 has a significant effect on the hydrogen storage performance of Mg, improving the dehydrogenation kinetics and hydrogen desorption rate. The Cu9Al4 content of 20 wt.% shows the best hydrogen desorption kinetics.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Inga Buerger, Marc Linder
Summary: Thermochemical energy storage systems are traditionally passive, but can also be viewed from a gas storage perspective; incorporating gas flow control strategies can lead to new possibilities in design and control of such systems.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Energy & Fuels
Adam Revesz, Marcell Gajdics
Summary: Research on hydrogen storage in magnesium-based composites has made significant progress in the past 5 years, with successful applications of various additives and exploration of different catalyst combinations. Ball milling remains a common and effective method in the fabrication process. Enhancements in desorption reactions and hydrogen absorption performance have been achieved, with promising prospects for future research.
Article
Materials Science, Multidisciplinary
Zhi-Nian Li, Hao-Chen Qiu, Xiu-Mei Guo, Jian-Hua Ye, Shu-Mao Wang, Li-Jun Jiang, Jun Du, Fermin Cuevas
Summary: Li-Mg-N-B-H/ZrCoH3 composites were synthesized by ball milling under different atmospheres. The composite synthesized under hydrogen atmosphere displayed the best hydrogen storage properties. The microstructures and elemental distributions were characterized and it was found that Mg underwent in situ hydrogenation and ZrCoH3 particles were homogeneously distributed. The activation energy of the composite was calculated and found to be lower with the addition of ZrCoH3. The weakening of N-H bond was analyzed and discussed.
Article
Chemistry, Physical
Haizhen Liu, Li Xu, Yu Han, Xin Chen, Peng Sheng, Shumao Wang, Xiantun Huang, Xinhua Wang, Chenglin Lu, Hui Luo, Shixuan He, Zhiqiang Lan, Jin Guo
Summary: A gaseous and solid-state (G-S) hybrid hydrogen storage system has been developed with a high volumetric hydrogen storage density and energy storage efficiency. It combines gas and solid-state hydrogen storage technologies to store hydrogen at low working pressure, showing promise for stationary hydrogen storage applications.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Yan Qi, Xin Zhang, Wei Zhang, Jun Li, Zeming Yuan, Shihai Guo, Yanghuang Zhang
Summary: In this study, a quaternary alloy La7Sm3Mg80Ni10 was prepared using casting and ball milling procedures, and the structural changes during hydrogen sorption and desorption were investigated. The results showed that ball milling reduced the grain and particle size and altered their surface properties. Compared to the as-cast alloy, the as-milled alloy absorbed 4 wt% H2 in shorter times at different temperatures. The as-milled and as-cast alloys exhibited similar dehydrogenation enthalpy change (ΔH) and apparent activation energies for dehydrogenation (Ede).
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
I. I. Chuev, D. Yu Kovalev
Summary: The effect of high energy ball milling (HEBM) on the stoichiometry of TiCx in the Ti + C system was studied. It was found that under annealing, carbon diffusion and recovery processes stabilize nonstoichiometric products of Ti + C reaction. TiC0.8-1.0 is formed at short HEBM times (Ti =1 min), while nonstoichiometric carbides TiC0.4-0.5 are formed at longer HEBM times (Ti >= 3 min). The fraction of unreacted titanium depends on the size of the Ti grain.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Bo Li, Liqing He, Yan Guo, Huajun Zhao, Jingjun Shen, Wen Lei, Jincheng Xu, Huaiyu Shao
Summary: The amorphous phase has advantages over crystalline counterparts in energy storage due to abundant defects, active sites, and less structural strain. High energy ball milling is a convenient and universal method to prepare amorphous materials with defects and fresh surfaces. This study utilizes high energy ball milling to prepare transition metal vanadates with enhanced lithium storage performance.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)