Article
Materials Science, Multidisciplinary
Wenchao Cao, Xin Ding, Ruirun Chen, Jiaxin Zhang, Yong Zhang, Hengzhi Fu
Summary: This study investigates the relationship between Mg2Ni in different microstructures and hydrogen storage performances using hypoeutectic and hypereutectic Mg100-xNix (x = 11, 15, 22) alloys. The results show that Mg2Ni is connected with Mg-Mg2Ni eutectics in Mg85Ni15 and Mg78Ni22 alloys, while Mg2Ni is connected with a-Mg in Mg89Ni11 alloy. Mg100-xNix alloys exhibit rapid hydrogen absorption rates due to abundant interfaces generated by nano-Mg2Ni particles. The Mg78Ni22 hydride with the highest proportion of nano-Mg2Ni phase shows the fastest dehydrogenation rates.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Energy & Fuels
Maryam Sadat Morassaei, Ali Salehabadi, Omid Amiri, Ahmad Akbari, Masoud Salavati-Niasari
Summary: The study presents the synthesis of CuCe2(MoO4)4 nanostructures and silicate layers for high-density hydrogen storage, exhibiting superior electrochemical performance with a maximum discharge capacity of -3750 mAh/g and efficiency of about 70% in an alkaline medium. The nanocomposite shows promise as a host material for electrochemical hydrogen storage systems, meeting the U.S. Department of Energy's hydrogen storage targets.
Article
Energy & Fuels
Ali Salehabadi, Norli Ismail, Norhashimah Morad, Mohd Rafatullah, Mardiana Idayu Ahmad
Summary: Polymeric materials have been highlighted in hydrogen storage technologies due to their reversible capacity, high surface area, and thermomechanical stabilities.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Somayeh Abdi, Mohammadreza Mansournia
Summary: In this research, the ternary solid phase of UO3·NH3H2O, identified as an ammonium uranate, was successfully synthesized via a simple and novel hydrothermal method under ammonia atmosphere. Furthermore, a UO3/rGO nanocomposite was prepared and used for hydrogen sorption and storage. The electrochemical hydrogen storage behavior of the uranium compounds was evaluated for the first time using the chronopotentiometry technique. Two ratios of UO3:rGO, 1:3 (UrGO3) and 1:10 (UrGO10), were studied to investigate the effect of ammonium uranate nanoparticles on the hydrogen storage property of UO3/rGO. The UrGO3 nanosheets exhibited maximum discharge capacity of 16,343 mAh/g after 20 cycles, which was attributed to the hierarchical plate-like pores observed in FE-SEM images.
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
Shuang Gao, Shan Zhang, Yongcheng Li, Riming Hu, Zhonghao Heng, Xiaochuan Shi, Peipeng Jin, Jianglan Shui
Summary: Rare earth doping is an effective method to improve hydrogen storage properties of Mg-based alloys. This study investigates the effect of rare earth (Y, Ce, La, Sc) doping on the thermal stability, electronic property, and hydrogen adsorption/desorption behavior of Mg2Ni (010) surface using first principles calculations. The results show that rare earth doping in Mg2Ni (010) surface is thermodynamically feasible and improves hydrogen diffusion and desorption energies barriers, with Ce showing the best potential.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Samira Alinavaz, Maryam Ghiyasiyan-Arani, Masoud Salavati-Niasari
Summary: Nanostructured multiferroic Dy-Fe-O electrode materials with high discharge capacity were synthesized using H2Salbn-assisted sol-gel procedure. The DyFeO3/Dy3Fe5O12 nanocomposites showed a discharge capacity of 447 mAhg-1, indicating their potential as active materials for hydrogen storage.
Article
Chemistry, Physical
Maryam Karami, Mojgan Ghanbari, Hassan Abbas Alshamsi, Maryam Ghiyasiyan-Arani, Masoud Salavati-Niasari
Summary: This research focuses on the fabrication of a novel nanocomposite through the sonochemical method to study its structural, morphological, and electrochemical hydrogen storage features. Different morphologies of samples exhibit varying discharge capacities after 15 cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
D. Andersen, H. Chen, S. Pal, L. Cressa, O. De Castro, T. Wirtz, G. Schmitz, S. Eswara
Summary: In this study, high-resolution imaging of hydrogen and deuterium within Mg2Ni/Mg2NiH4 hydrogen storage thin films was achieved using a self-developed secondary ion mass spectrometer (SIMS) system attached to a commercially available dual-beam focused ion beam - scanning electron microscope (FIB-SEM) instrument. A novel approach using laser scanning confocal microscopy (LSCM) was demonstrated to measure the size, shape, and distribution of the hydride phase in partially transformed films. The combination of these techniques provides new insights on hydride nucleation and growth within the Mg2NiHx system. Additionally, the efficacy of tracking deuterium as a hydrogen analog for SIMS imaging in high-vacuum chambers was demonstrated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Wenchao Cao, Xin Ding, Yong Zhang, Jiaxin Zhang, Ruirun Chen, Yanqing Su, Jingjie Guo, Hengzhi Fu
Summary: By dissolving Ag in hyper-eutectic Mg-Ni alloy, a fishbone eutectic structure is formed, and adjusting lattice parameters can significantly improve the hydrogen absorption and desorption rates while reducing the dehydrogenation temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Raffaello Mazzaro, Luca Pasquini
Summary: The aim of this study is to investigate the hydrogen sorption kinetics and thermodynamics of Mg-Ni nanoparticles at low temperature, focusing on their microstructure. The findings show that Mg-Ni nanoparticles exhibit fast hydrogen sorption kinetics at 150 degrees C, but the maximum hydrogen storage capacity is limited due to the lack of transformation from Mg2NiH0.3 to Mg2NiH4 at this temperature. Partial replacement of Ni with Fe does not significantly affect the hydrogen sorption thermodynamics and kinetics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Wenchao Cao, Xin Ding, Ruirun Chen, Jiaxin Zhang, Yong Zhang, Hongxian Shen, Hengzhi Fu
Summary: In this study, Mg-Ni alloy fibers with a high Mg content and well-distributed Mg2Ni catalytic phase were successfully prepared using the melt extraction method. A unique metallic glass fiber was formed, and uniformly dispersed Mg2Ni nanoparticles were in-situ formed after pre-annealing. The hydrogen absorption and desorption kinetics of the Mg-Ni fibers were investigated, and the dehydrogenation activation energy and enthalpy changes were accurately characterized using models.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jisheng Yang, Kemin Zhang, Zhewen Ma, Xu Zhang, Tianping Huang, Subrata Panda, Jianxin Zou
Summary: A new type of trimesic acid-Ni based metal organic framework (TMA-Ni MOF) was synthesized, and its derivative Ni@C was introduced into MgH2 through high energy ball milling to prepare a Mg-Ni@C-H composite, which showed accelerated hydrogen absorption/desorption kinetics and reduced activation energy. The carbon-wrapped structure of the composite prevented aggregation of nanosized particles, ensuring stable hydrogen capacity and kinetics during high-rate cycling.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Eli Grigorova, Petar Tzvetkov, Stanislava Todorova, Pavel Markov, Tony Spassov
Summary: The composites based on Mg2Ni with 5% activated carbon from apricot stones (ACAP) were prepared by ball milling and subsequent annealing in hydrogen atmosphere. The composites showed relatively high hydrogen storage capacity and fast hydriding/dehydriding kinetics, making them promising materials for hydrogen storage applications.
Article
Energy & Fuels
Maryam Ostadebrahim, Omran Moradlou
Summary: A comparative study was conducted on the effect of transition metal cations in LaMO3 perovskite-type structures on their electrochemical hydrogen sorption/storage process. LaFeO3 nanoparticles showed the highest discharge capacity of 13,500 mAh/g due to their higher surface reactivity and faster electron transfer. The electrode demonstrated superior cycling stability and could be a potential candidate for battery applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Tamilmani Selvaraj, Renganathan Rajalingam, Viswanathan Balasubramanian
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Physical
Velu Jeyalakshmi, Rajaram Mahalakshmy, Kanaparthi Ramesh, Peddy V. C. Rao, Nettem V. Choudary, Kandasamy Thirunavukkarasu, Konda Ramasamy Krishnamurthy, Balasubramanian Viswanathan
MOLECULAR CATALYSIS
(2018)
Article
Chemistry, Multidisciplinary
Saranya Ashokkumar, Vivekanandan Ganesan, Krishnamurthy K. Ramaswamy, Viswanathan Balasubramanian
RESEARCH ON CHEMICAL INTERMEDIATES
(2018)
Article
Polymer Science
S. Vandarkuzhali, B. Viswanathan, M. P. Pachamuthu, S. Kishore
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2020)
Article
Chemistry, Physical
Ajay Piriya Vijaya Kumar Saroja, Ariharan Arjunan, Kamaraj Muthusamy, Viswananthan Balasubramanian, Ramaprabhu Sundara
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Nanoscience & Nanotechnology
Omvir Singh, Ankit Agrawal, Tamilmani Selvaraj, Indrajit K. Ghosh, Bhanu Prasad Vempatapu, Balasubramanian Viswanathan, Rajaram Bal, Bipul Sarkar
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Analytical
Mamta Sham Lal, Ariharan Arjunan, Viswanathan Balasubramanian, Ramaprabhu Sundara
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Energy & Fuels
A. Ariharan, K. Ramesh, R. Vinayagamoorthi, M. Sandhya Rani, B. Viswanathan, S. Ramaprabhu, V Nandhakumar
Summary: A facile method of self-phosphorous doped porous carbon has been developed without using any activation process, showing high H-2 storage capacity and specific capacitance. The carbon material exhibits excellent cyclic stability and shows potential for industrial applications.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Naveen T. R. Kumar, S. Kamalakannan, M. Prakash, B. Viswanathan, B. Neppolian
Summary: This study introduces a new method to improve the efficiency of noble-metal based fuel cells by introducing non-noble metals and point defects, increasing current density and selectivity of the catalyst, with the reaction pathway predicted through density calculation theory.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Anil Singh Rajpurohit, Venkata Rama Mohan Talla, Madhavan Jaccob, Krishnamurthy Konda Ramaswamy, Balasubramanian Viswanathan
Summary: Nickel catalysts supported on six different titania phases showed remarkable differences in activity and selectivity for the aqueous phase hydrogenation of furfural. The crystal phase of titania, anatase and rutile, played a crucial role in determining the conversion and formation of different hydrogenated products. The activity/selectivity patterns were rationalized based on metal-support interactions and the reducibility of the support.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Applied
Vinayagamoorthi Rathinasamy, Thirunavukkarasu Kandasamy, Krishnamurthy Konda Ramaswamy, Viswanathan Balasubramanian, Shanthi Kannan
Summary: A new series of catalysts supported on alumina with 8% nickel, modified with promoters, showed high activity in converting ethanol to butanol and higher alcohols at 200-220 degrees C. The promoters improved nickel dispersion and reducibility, while also impacting the acidic and basic sites on the catalyst. The selectivity towards butanol and higher alcohols was influenced by both the basicity of the catalyst and the metal function.
INDIAN JOURNAL OF CHEMICAL TECHNOLOGY
(2021)
Article
Chemistry, Physical
S. Anbu Anjugam Vandarkuzhali, S. Karthikeyan, B. Viswanathan, M. P. Pachamuthu
SURFACES AND INTERFACES
(2018)
Article
Chemistry, Multidisciplinary
S. Anbu Anjugam Vandarkuzhali, N. Pugazhenthiran, R. V. Mangalaraja, P. Sathishkumar, B. Viswanathan, S. Anandan
Article
Chemistry, Applied
Arjunan Ariharan, Balasubramanian Viswanathan
INDIAN JOURNAL OF CHEMICAL TECHNOLOGY
(2018)
Article
Chemistry, Multidisciplinary
Somasundaram Anbu Anjugam Vandarkuzhali, Sampathkumar Natarajan, Shanmugapriya Jeyabalan, Gandhi Sivaraman, Subramanian Singaravadivel, Shanmugam Muthusubramanian, Balasubramanian Viswanathan
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)
