Article
Chemistry, Physical
Chongyang Zhou, Yigang Yan, Torben R. Jensen
Summary: The introduction of LiBH4 into Li2B12H12-5Li(2)B(10)H(10) improves its electrochemical window to 3.0 V and Li-ion conductivity to 1.0 x 10(-4) S cm(-1) at room temperature. Moreover, the Li(2)B(12)H(12)-5Li(2)B(10)H(10)-6LiBH(4) electrolyte exhibits good compatibility with a metallic Li anode and TiS2 cathode, allowing stable operation of the all-solid-state cell for 120 cycles with high capacity and coulombic efficiency. This work demonstrates the potential of a hydroborate electrolyte for the development of high voltage all-solid-state batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruixue Zhang, Wanying Zhao, Zhenzhen Liu, Shanghai Wei, Yigang Yan, Yungui Chen
Summary: By forming amorphous LiBH4· 1/2NH(3) in situ on the surface of Al2O3 via strong interfacial interaction through B-O bonds, the ionic conductivity has been improved significantly. The electrochemical window of the composite material is expanded to 3.6 V.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Abhishek Rajput, Savan K. Raj, Oksana V. Lebedeva, Alexandra N. Chesnokova, Tatiana V. Raskulova, Vaibhav Kulshrestha
Summary: Functionalized carbon dots were investigated as potential organic fillers for sulfonated poly (ether sulfone) based composite cation exchange membranes to enhance membrane performance. The addition of sulfonated carbon dots improved physicochemical and electrochemical properties of the composite membranes, resulting in increased ionic conductivity and ion exchange capacity. The composite membranes showed a significant reduction in power consumption during salt removal from brackish water in comparison to membranes without the filler material.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Ceramics
Pan Xu, Yihang Li, Tong Liu, Fanglin Chen, Weiwei Wu, Cong Ren
Summary: BZY-GDC composite electrolytes were fabricated by a sol-gel method and their crystalline structure was examined by XRD. Good chemical compatibility between BZY and GDC was observed. The morphology and element distribution of the composite electrolyte were observed by SEM and EDX. Two different types of grain boundaries were identified in the composite electrolyte at lower temperatures.
CERAMICS INTERNATIONAL
(2022)
Article
Electrochemistry
Fei Chen, Jamans Luo, Mao-xiang Jing, Jie Li, Zhen-hao Huang, Hua Yang, Xiang-qian Shen
Summary: Introducing a flexible polymer buffer layer to the surface of solid electrolyte enhances the interface contact and stability between electrodes. The layered structure composite solid electrolyte membrane shows good electrochemical stability window and ion conductivity, demonstrating great potential for use in high-performance solid-state lithium batteries.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Jiewen Tan, Zhen Wang, Jiawu Cui, Yuhua Chen, Zhanhui Jia, Mingyu Yang, Naziyila Gemingjiang, Zichun Xiao, Xiaowei Wang, Wangjiang Gao, Wensheng Tian, Chao Zhang, Wei Tang, Yuping Wu
Summary: A novel PEO-based solid polymer electrolyte (SPE) was developed with black phosphorus (BP) nanosheets and a cryogenic method, which improved the ionic conductivity and electrochemical stability. The SPEs exhibited excellent electrochemical performance and showed potential for practical application.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Yuvaraj Subramanian, Rajesh Rajagopal, Kwang-Sun Ryu
Summary: To address the issues of lithium dendrite growth and incompatibility with high cell voltage cathode materials in solid-state batteries, a blending approach of Li3N/Li3YCl6 and Li6PS5Cl (LPSCl) is proposed. The (10 0-x) LPSCl:x(Li3N/Li3YCl6) (x = 0, 2, 5 and 10) solid electrolyte composition is synthesized using ball milling, and phase purity analysis shows that the composition maintains argyrodite structure. Electrochemical impedance measurement reveals that the composition with lower concentrations of Li3N/Li3YCl6 (x = 2 and 5) exhibits an ionic conductivity over 1 mS cm-1. Critical current density measurement demonstrates that the composition of 98LPSCl: 2Li3N has a higher critical current density of 0.55 mA cm-2 compared to other compositions. The assembled battery using 98LPSCl: 2Li3N shows a discharge capacity of 179.1 mAh g-1 with a capacity retention of 92.3% over 100 cycles, and maintains a high reversible capacity of 131 mAh g-1 at 2 C rate. Finally, the use of 95LPSCl:5Li3YCl6 composition as an interlayer between the electrode and the electrolyte interface increases the coulombic efficiency of the solid-state battery to 74.9%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Hak-Min Kim, Yuvaraj Subramanian, Kwang-Sun Ryu
Summary: Currently, there is significant interest in sulfide-based solid electrolytes, particularly the argyrodite-type solid electrolyte Li6PS5X (X = Cl, Br, I), due to its decent mechanical strength and high ionic conductivity (>10-3 S/cm). However, it still lags behind liquid electrolytes in terms of ionic conductivity and is unstable in moist air. In this study, SeS2-doped Li6PS5Cl electrolyte was prepared through high-energy ball milling and heat treatment. The synthesized electrolyte exhibited improved ionic conductivity, stability against Li metal, and electrochemical performance compared to the pristine Li6PS5Cl electrolyte. Furthermore, it demonstrated good air stability properties, making it a promising candidate for solid-state lithium batteries.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Erik Piatti, Luca Guglielmero, Giorgio Tofani, Andrea Mezzetta, Lorenzo Guazzelli, Felicia D'Andrea, Stefano Roddaro, Christian Silvio Pomelli
Summary: Ionic gating is an effective tool for tuning material properties and developing low-temperature devices. Ionic liquids are promising gating agents due to their high thermal and electrochemical stability. This study aims to determine guidelines for synthesizing ionic liquids suitable for low-temperature electrolytes. Experimental results show that cations affect both cathodic and anodic limits, asymmetric ammonium cations have higher electrochemical stability, longer chain lengths decrease electrochemical stability, alkyl long chains have larger anodic limits but smaller cathodic limits compared to ether long chains of the same length, and the ether chain with the largest electrochemical stability contains three carbon atoms and one oxygen.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Zhengyi Lu, Lin Peng, Yi Rong, Enli Wang, Ruhua Shi, Hongxun Yang, Yadong Xu, Ruizhi Yang, Chao Jin
Summary: Poly(ethylene oxide) (PEO) and Li6.75La3Zr1.75Ta0.25O12 (LLZTO)-based composite polymer electrolytes (CPEs) are improved by coating LLZTO fillers with a functional supramolecular combination (CD-TFSI). This coating allows for homogeneous dispersion and tight interface contact, resulting in enhanced conductivity, increased Li+ transference number, and extended electrochemical stability window. Practical application of the CPEs is demonstrated in both full cells and pouch cells. This work presents a new strategy for optimizing PEO/LLZTO CPEs for solid lithium batteries.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Materials Science, Ceramics
L. A. Dunyushkina, S. A. Belyakov, N. M. Filatov
Summary: This article provides a review of the currently known data on alkaline-earth hafnates, including their structure, phase transitions, synthesis technologies, sintering ability, thermal properties, chemical stability, electrical conductivity, and transference numbers. Furthermore, it highlights the applications of alkaline-earth hafnates as an electrolyte in different types of electrochemical devices.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Polymer Science
Yiming Xiao, Haoran Chen, Ranxin Sun, Lei Zhang, Jun Xiang, Penggao Cheng, Huaiyuan Han, Songbo Wang, Na Tang
Summary: In this study, polymerized [HVIM]H2PO4 ionic liquids (PIL) were introduced into an OPBI membrane to improve proton transfer and enhance chemical stability. By regulating the intrinsic viscosity of PIL, entanglement between PIL chains and OPBI chains was enhanced to prevent PIL loss and oxidative degradation of membrane materials. The 2.34-PIL/OPBI membrane exhibited the highest proton conductivity of 113.9 mS•cm(-1) at 180°C, which is 3.5 times higher than the original OPBI membrane. It also showed a high remaining weight of 92.1% and lower degradation in mechanical strength and proton conductivity under harsh conditions. This study presents a simple and effective method to enhance the chemical durability of PA-PBI membranes as HT-PEMs by blending PIL with OPBI.
Article
Biochemistry & Molecular Biology
Laura M. de Kort, Valerio Gulino, Didier Blanchard, Peter Ngene
Summary: In this study, the reaction of LiBH4 with LiBF4 resulted in the formation of conductive composites with improved ionic conductivity. The in-situ formation of closo-borate related species was found to enhance the conductivity, allowing for novel synthesis pathways for complex metal hydrides.
Article
Materials Science, Ceramics
S. Vinoth Rathan, R. Murugaraj, G. Govindaraj, K. Aravinth, P. Ramasamy
Summary: A series of NASICON-based phosphate glass systems were synthesized and the mixed alkali effect (MAE) was observed in thermal and dielectric properties.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Physics, Applied
Tingfang Yan, Songyi Han, Xiaomeng Wu, Di Jia, Yuhua Chen, Wensheng Tian, Yongmin Wu, Lei Zhu, Weiping Tang
Summary: This study demonstrates that the ultrathin interfacial layer composed of PEO and EC is an effective approach to enhance the performance of solid-state batteries, by reducing interfacial impedance, improving stability, and facilitating the formation of SEI.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Haifang Xie, Dahai Zeng, Bing Du, Peng Zhang, Huaijun Lin, Qingyang Li, Zhidan Lin, Wei Li, Yuying Meng
Summary: This study reports a novel Co2P@NOCs non-precious metal electrocatalyst that can serve as an excellent noble metal-free bifunctional electrocatalyst for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in alkaline media. The Co2P@NOC-2 electrocatalyst exhibits low overpotential and a small Tafel slope for OER, as well as positive onset and half-wave potentials for ORR. It also demonstrates better methanol tolerance and long-term durability compared to the commercial Pt/C catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Luana Bonnici, Joseph Buhagiar, Glenn Cassar, Kelsey Ann Vella, Jian Chen, Xiyu Zhang, Zhiquan Huang, Ann Zammit
Summary: This research investigates the effects of mechanical shot peening and TiAlCuN coating on additively manufactured 316L stainless steel. Shot peening increases surface hardness by 40%, and the combined effect with coating increases it three-fold compared to as-printed coupons. Shot peening also improves surface finish and induces compressive residual stress. Scratch testing shows better performance in hybrid treated samples, while corrosion tests demonstrate the superiority of the hybrid treated samples over other variables.
Article
Chemistry, Multidisciplinary
Yanyu Chen, Xiao Wang, Huaijun Lin, Florian Vogel, Wei Li, Lin Cao, Zhidan Lin, Peng Zhang
Summary: This paper proposes a simple and efficient method for disposing of waste low-density polyethylene (LDPE) express packaging bags, aiming to minimize waste and address the energy shortage. Carbon nanotubes (CNTs) derived from LDPE were produced and tried as electrodes for supercapacitors. Waste LDPE bags were pyrolyzed and carbonized using a dual-temperature reaction system, and the effect of different carbonization temperatures and treatment durations on the product was investigated. CNTs synthesized at 750 degrees C showed the best properties with a high yield of 41.9% and carbon conversion of 61.2%. The electrode demonstrated good performance with a capacitance retention of 93.16% and a Coulomb efficiency of 92.85% after 10,000 cycles. The dual-temperature reaction system offers an efficient way to recycle waste LDPE, and LDPE-derived CNTs can be applied in supercapacitors.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Review
Materials Science, Multidisciplinary
Kaveh Edalati, Etsuo Akiba, Walter J. Botta, Yuri Estrin, Ricardo Floriano, Daniel Fruchart, Thierry Grosdidier, Zenji Horita, Jacques Huot, Hai-Wen Li, Huai-Jun Lin, Adam Revesz, Michael J. Zehetbauer
Summary: Magnesium and its alloys are extensively studied for solid-state hydrogen storage, but there are challenges in the kinetics and thermodynamics of hydrogenation and dehydrogenation. Severe plastic deformation methods have been utilized to improve the activation, air resistance, and kinetics of Mg-based hydrogen storage materials by introducing ultrafine/nanoscale grains and crystal lattice defects. These deformed materials, particularly with alloying additives or second-phase nanoparticles, exhibit fast hydrogen absorption/desorption kinetics and good cycling stability. The study also highlights the application of severe plastic deformation methods in hydrogen binding-energy engineering and the synthesis of new magnesium alloys for reversible low/room-temperature hydrogen storage.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Xiying Jian, Jian Li, Bing Han, Fei Chu, Kaiyao Wu, Yuying Meng, Meng Zhang, Huai-Jun Lin
Summary: In this study, varying amounts of FeOOH were generated in situ on an amorphous Fe78Si9B13 alloy ribbon through potentiostatic cathodic corrosion treatments of different durations. These samples, labeled R-0.5h, R-1h, R-2h, and R-5h, were then evaluated as electrocatalysts for the oxygen evolution reaction (OER) in 1 M KOH. The optimal catalytic performance was observed in the R-1h sample, which achieved an overpotential of 356 mV at a current density of 10 mA cm-2 and a Tafel slope of 45 mV dec-1.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Biochemistry & Molecular Biology
Jiahui Zhao, Peng Zhang, Lin Cao, Haoling Huo, Huaijun Lin, Qiwei Wang, Florian Vogel, Wei Li, Zhidan Lin
Summary: In this study, a novel amphiphilic CA-g-AN material was synthesized and used to improve the hydrophilicity of PES membranes. The modified membranes demonstrated higher water flux and better antifouling ability.
Article
Chemistry, Multidisciplinary
Haifang Xie, Bing Du, Xiaoxi Huang, Dahai Zeng, Hui Meng, Huaijun Lin, Wei Li, Tewodros Asefa, Yuying Meng
Summary: Efficient oxygen reduction reaction (ORR) electrocatalysts are in high demand for various renewable energy systems. This study reports the synthesis of a highly efficient ORR electrocatalyst composed of N-doped mesoporous carbon and single Fe atoms. The material exhibits excellent electrocatalytic activity for ORR in acidic and alkaline media, comparable to Pt/C. It also demonstrates high durability and tolerance to methanol crossover reaction, making it suitable for proton exchange membrane fuel cells and zinc-air batteries.
Article
Chemistry, Physical
Kelsey Ann Vella, Joseph Buhagiar, Glenn Cassar, Martina Marie Pizzuto, Luana Bonnici, Jian Chen, Xiyu Zhang, Zhiquan Huang, Ann Zammit
Summary: The use of additively manufactured components made of titanium alloys has grown rapidly in aerospace applications. However, issues such as retained porosity, rough surface finish, and tensile surface residual stresses hinder their expansion to other sectors. This study investigates the effect of a duplex treatment, combining shot peening and physical vapor deposition, to improve the surface characteristics of the material.
Article
Chemistry, Analytical
Xiao Wang, Haoling Huo, Congjie Xu, Huaijun Lin, Qiwei Wang, Junjie Yang, Florian Vogel, Xiaoying Wang, Zhidan Lin, Lin Cao, Wei Li, Peng Zhang
Summary: A glucose-responsive PBA-based biosensor with outstanding mechanical properties, excellent glucose sensitivity, response stability, and wide linearity was successfully synthesized in this study. The biosensor exhibited exceptional electromechanical responsiveness, high sensitivity, and a linear response to glucose concentration from 0.20 mM to 2.0 mM. It also showed satisfactory cyto-compatibility, hemocompatibility, and antibacterial properties. This new material with special structure holds promise as a substitute for non-enzymatic glucose biosensors and can benefit wound management in diabetic patients.
ANALYTICA CHIMICA ACTA
(2023)
Review
Materials Science, Multidisciplinary
Xiying Jian, Jian Li, Liqing He, Hai-Wen Li, Meng Zhang, Peng Zhang, Huai-Jun Lin
Summary: Recently, studies have shown that materials processed by severe plastic deformation (SPD) exhibit superior performances in electrocatalytic hydrogen and oxygen evolution reactions for water splitting. This paper summarizes the recent advances in electrochemical hydrogen production performances of SPDed materials, provides a brief description of the basic principles of electrocatalytic water splitting, comprehensively reviews the development of SPD technology and recent advances on SPDed materials with enhanced hydrogen production properties. Furthermore, future prospects for SPDed materials in hydrogen production are discussed.
MATERIALS TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhen Wang, Kehua Wang, Xiao Tao, Pan Feng, Hui Xu, Xiao Zhu, Xiyu Zhang, Jian Chen
Summary: Ion-sieving separators can effectively solve the issues of dendrite growth and side reactions during Zn metal anode plating. By depositing an oxygen-deficient SiOx layer on a glass fiber separator, the performance of the ion-sieving separator is improved, leading to dendrite-free Zn deposition and longer cycling life.
Article
Chemistry, Multidisciplinary
Yanyu Chen, Jie Li, Yingfei Yang, Junjie Yang, Huaijun Lin, Qiwei Wang, Xusheng Yang, Yuying Meng, Wei Li, Zhidan Lin, Peng Zhang
Summary: A novel porous polymer was prepared using the Pickering high internal phase emulsion (HIPE) template method for efficient oil-water separation from sewage. The addition of OTS-modified carbon nanotubes and surfactants improved the stability, mechanical properties, and separation efficiency of the polyHIPE. The 1%OTS-CNT polyHIPE exhibited high oil absorption capacity and maintained absorption efficiency even after multiple reapplications. Furthermore, the polymer showed superior antibacterial properties against E. coli and S. aureus.
Article
Chemistry, Physical
Yaqi Chen, Xieyu Xu, Jianli Cheng, Xuyang Wang, Dawei Wang, Yongjing Wang, Xingxing Jiao, Jian Chen, Shizhao Xiong, Zhongxiao Song, Yangyang Liu
Summary: This study systematically investigated the structural compatibility between commercially layered cathode material NCM523 and solid-state electrolyte LATP. It was found that a severe side reaction occurs during the cosintering process, leading to a loss of capacity in the cathode material. Thus, interface modification of the NCM523/LATP interface is suggested to inhibit this side reaction and accelerate the application of LATP-based all-solid-state batteries.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Chunyan Xiang, Dahai Zeng, Bing Du, Xiaoxi Huang, Huaijun Lin, Peng Zhang, Zhiguo Zhang, Dexin Chen, Wei Li, Yuying Meng
Summary: In this study, nitrogen and phosphorous co-doping was used to improve the water-splitting electrocatalytic performance of pentlandite cobalt sulfide. The co-doped material showed enhanced hydrogen evolution reaction activity and excellent oxygen evolution reaction activity in alkaline media. The improved performance is attributed to the optimized electronic structure and surface wettability of the co-doped material.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Materials Science, Multidisciplinary
L. J. Huang, H. Wang, L. Z. Ouyang, M. Zhu, H. J. Lin
Summary: This study solves the problem of sluggish de/hydrogenation kinetics of Mg-based amorphous alloys by building a hydrogen pump on the surface of the alloys. The hydrogen pump effect of seeded crystalline alloy is confirmed, greatly enhancing the hydrogen absorption rate and low-temperature dehydrogenation kinetics.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
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)
