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)
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
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
Taoli Jiang, Shuyang Wei, Linxiang Li, Kai Zheng, Xinhua Zheng, Sunhyeong Park, Shuang Liu, Zhengxin Zhu, Zaichun Liu, Yahan Meng, Qia Peng, Yuancheng Feng, Wei Chen
Summary: In this study, a low-cost nickel-molybdenum alloy was used as an electrode for aqueous nickel-hydrogen batteries, which was improved with the help of a conductive, hydrophobic network of multiwalled carbon nanotubes. The resulting batteries showed high energy density, low cost, excellent durability, and great potential for practical grid-scale energy storage.
Article
Chemistry, Physical
N. N. Sulaiman, M. Ismail, A. H. A. Rashid, N. A. Ali, N. A. Sazelee, S. N. Timmiati
Summary: The hydrogen sorption performances of the 4MgH(2) + LiAlH4 system destabilized with 5 wt% Al2TiO5 showed significantly improved dehydrogenation temperature and kinetics. The introduction of Al2TiO5 resulted in earlier hydrogen liberation and enhanced absorption and desorption kinetics, indicating a synergistic effect on hydrogen storage behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Liang Dan, Hui Wang, Xiaobao Yang, Jiangwen Liu, Liuzhang Ouyang, Min Zhu
Summary: This study demonstrates the significant improvement of hydrogen sorption performances of MgH2 by synthesizing Nb-doped TiO2 solid-solution-type catalysts. The catalyzed MgH2 is able to absorb 5% of H2 at room temperature for 20 seconds, release 6% of H2 at 225 degrees C within 12 minutes, and achieve complete dehydrogenation at 150 degrees C under a dynamic vacuum atmosphere. The success of solid solution-type catalysts in MgH2 provides a demonstration and inspiration for the development of high-performance catalysts and solid-state hydrogen storage materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Toyoto Sato, Shin-ichi Orimo
Summary: Alloys based on REMgNi4 exhibit reversible hydrogen absorption and desorption reactions, forming three hydride phases. The hydrogen storage capacities and hydride formation pressures are dependent on the compositional ratios and crystal structures of the alloys.
Review
Engineering, Environmental
Ye Zhang, Gaurav Bhattacharjee, Rajnish Kumar, Praveen Linga
Summary: This article focuses on the current state of solidified hydrogen storage via clathrate hydrates and comprehensively evaluates the properties and performances of different H-2-containing hydrate systems. The controversial issues in hydrogen hydrate research, such as multiple cage occupancy by H-2 molecules and the tuning effect, are also elucidated. Finally, the challenges, limitations, and future opportunities for hydrate-based hydrogen storage are identified.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Haiguang Gao, Yingyan Zhao, Xu Zhang, Baozhou Zhao, Zhen Jia, Yana Liu, Xiaohui Hu, Yunfeng Zhu
Summary: This study introduces solid-solution MAX phase TiVAlC catalyst directly into the MgH2 system to improve its hydrogen storage performance. The excellent catalytic activity of TiVAlC catalyst can be explained by abundant electron transfer at external and internal interfaces. The influence of impurity phase on the overall activity of catalysts has also been studied, providing a unique method for designing composite catalyst to improve hydrogen storage performance of MgH2.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xiaoyue Zhang, Yahui Sun, Guanglin Xia, Xuebin Yu
Summary: Light-weight solid-state hydrogen storage materials, such as metal hydrides and complex hydrides, have great application potential due to their high hydrogen storage densities. Neutron scattering techniques have become powerful tools for characterizing the hydrogen storage mechanism of these materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Bin Miao, Lan Zhang, Shengwei Wu, Siew Hwa Chan
Summary: Green hydrogen plays a vital role in energy transition, and ammonia, as a carrier of hydrogen, has a mature supply chain that helps reduce the cost of producing green hydrogen. The research shows that the cost of using ammonia as an energy source is higher than natural gas power plants, but it is still feasible when fuel costs significantly decrease.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Haohua Zhang, Yiting Bu, WenYing Xiong, Kejian He, Ting Yu, Zhaoyu Liu, Jiaao Wu, Bin Li, Lixian Sun, Yongjin Zou, Weiqi Sun, Rongrong Guo, Fen Xu, Kexiang Zhang, Huanzhi Zhang
Summary: Magnesium hydroxide has gained attention for its potential as a hydrogen storage material, but its stability and slow kinetic activity limit its applications. To improve its hydrogen storage capacity, ternary transition metal nitride NiCoN was used to catalyze MgH2 through hydrothermal and calcination techniques. The addition of 6 wt% NiCoN lowered the dehydrogenation temperature to 164.4 degrees C and increased the hydrogen desorption rate. The presence of intermediate products, Mg2Ni/Mg2NiH4 and Mg2Co/Mg2CoH5, contributed to the enhanced hydrogen absorption/desorption behavior and the retention rate of 94% even after 40 cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Engineering, Electrical & Electronic
Mehak Singla, Neena Jaggi
Summary: The excessive usage of fossil fuel energy has led to the development of alternative fuels, with hydrogen emerging as a promising option due to its production from renewable sources and emission of only heat and water upon combustion. Graphene-based materials, with their exceptional properties, are being explored for hydrogen adsorption and storage, although modifications are needed to meet specific requirements. Studies on the capacity of graphene materials for hydrogen storage through physisorption or chemisorption are being conducted using Density Functional theory, showing promising results for the potential sensing ability of the material.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Energy & Fuels
Michael Lutz, Matthias Schmidt, Inga Buerger, Marc Linder
Summary: This research conducts a fundamental analysis of a novel thermochemical system, revealing the technical potential of metal hydrides as energy storage components and indicating the relationship between higher pressure ratio, increased storage density, and decreased efficiency.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
John D. O. Williams, J. P. Williamson, Daniel Parkes, David J. Evans, Karen L. Kirk, Nixon Sunny, Edward Hough, Hayley Vosper, Maxine C. Akhurst
Summary: This study presents a modelling approach to evaluate the UK's theoretical hydrogen storage capacity in new salt caverns and finds a potential storage capacity exceeding 64 million tonnes. The analysis identifies the practical inter-seasonal storage capacity suitable for integration in a hydrogen transmission system. The availability of salt cavern storage potential does not present a limiting constraint for the development of a low-carbon hydrogen network in the UK.
JOURNAL OF ENERGY STORAGE
(2022)
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)