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)
Review
Chemistry, Physical
N. A. Ali, N. A. Sazelee, M. Ismail
Summary: Metal hydrides and complex hydrides are the most convenient method for hydrogen storage, offering high hydrogen capacity, but facing challenges of high operating temperature and low reversibility.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Xunxiang Hu, Kurt A. Terrani
Summary: This paper reports the properties of unirradiated bulk yttrium hydride as a function of hydrogen concentration, providing a baseline measurement for further neutron irradiation response studies. It suggests the recommended empirical treatment of the data and discusses other properties that need to be investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Green & Sustainable Science & Technology
Alok Kumar, P. Muthukumar, Pratibha Sharma, E. Anil Kumar
Summary: Hydrogen is considered a reliable option for clean energy in a sustainable society. Absorption/adsorption based solid-state hydrogen storage technology is a safer alternative to compressed and liquefied hydrogen storage, using materials such as metal hydrides and complex hydrides. This review provides an overview of material options, alloy characteristics, and worldwide advancements in solid-state hydrogen storage.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Yongfeng Liu, Wenxuan Zhang, Xin Zhang, Limei Yang, Zhenguo Huang, Fang Fang, Wenping Sun, Mingxia Gao, Hongge Pan
Summary: Hydrogen storage remains a huge challenge for the development of a sustainable energy system, despite its importance. Light metal hydrides have high hydrogen densities but suffer from slow kinetics and poor reversibility due to strong bonds between metal atoms and hydrogen. Nanoscale particles offer a promising solution to tailor the properties of light metal hydrides and improve their performance. This review summarizes the preparation methods and hydrogen storage performance of nanostructured light metal hydrides, discusses the challenges, and explores future research prospects, highlighting the combination of nanostructuring and nanocatalysis for practical hydrogen carriers.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Chemistry, Physical
Manjin Kim, Qinfen Gu, Tanveer Hussain, Yahia Ali, Trevor B. Abbott, Kazuhiro Nogita
Summary: Adding Na to cast Mg-La alloys significantly improves hydrogen absorption kinetics during the first activation cycle. The role of Na in Mg-La alloys has been discussed based on microstructural observations, crystallography, and first principles calculations.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Dan Zhang, Xin Hui, Chunying Wu, Yunbo Zhu
Summary: Hydrogen evolution reactions, especially those combining hydrogen atom transfer (HAT) and metal-catalyzed hydrogen evolution (MCHE), have been shown to be a powerful and attractive strategy in organic synthesis for forming chemical bonds directly from available feedstocks. This review summarizes the current state of the art, highlighting mechanisms, synthetic applications, and offering insights into future developments in this area.
Review
Chemistry, Physical
Yan Wang, Zhe Hu, WeiHua Chen, Shiwei Wu, Guode Li, Shulei Chou
Summary: Hydrogen energy is proposed as a promising energy replacement to resolve the current energy problems for sustaining the long-term development of human society and eventually achieving the hydrogen economy. Seeking appropriate non-noble metal-based catalysts is the vital step that is needed to improve the sluggish kinetics of the hydrolysis process. The study systematically discusses different non-noble metal-based catalysts and emphasizes the importance of developing sustainable and clean hydrogen energy.
Review
Metallurgy & Metallurgical Engineering
Yuanyuan Shang, Claudio Pistidda, Goekhan Gizera, Thomas Klassen, Martin Dornheim
Summary: Magnesium and magnesium based compounds have been extensively studied as potential hydrogen and thermal energy storage materials due to their abundance and high storage densities. Efforts have been made by the scientific community to improve their properties while maintaining high hydrogen storage capacity.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Inorganic & Nuclear
Zhi-Kang Qin, Li-Qing He, Xiao-Li Ding, Ting-Zhi Si, Ping Cui, Hai-Wen Li, Yong-Tao Li
Summary: Building liquid channels in magnesium hydride by introducing lithium borohydride ion conductors improves its low-temperature hydrogen sorption. For example, 5 wt% LiBH4-doped MgH2 can release about 7.1 wt.% H-2 within 40 min at 300 degrees C, while pure MgH2 only desorbs less than 0.7 wt.% H-2. Additionally, the LiBH4-doped MgH2 exhibits faster desorption kinetics with more than 10 times enhancement compared to pure MgH2, and maintains a stable cyclic performance even after six absorption and desorption cycles. This approach provides insights for promoting hydrogen absorption and desorption of other metal hydrides.
Article
Chemistry, Physical
Eli Grigorova, Pavel Markov, Boyko Tsyntsarski, Peter Tzvetkov, Ivanka Stoycheva
Summary: This study investigates the hydrogen sorption performance of materials based on 80 wt.% MgH2 with the addition of 15 wt.% Ni or V and 5 wt.% activated carbons synthesized from polyolefin wax, a waste product from polyethylene production (POW), walnut shells (CAN), and peach stones (CPS). The composition and performance of the samples are analyzed through milling, hydrogenation, X-ray diffraction, and TEM.
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
Chemistry, Physical
Darren P. Broom, Michael Hirscher
Summary: Research on new reversible hydrogen storage materials has the potential to accelerate the transition to a hydrogen economy, but accurately measuring storage capacities has proved challenging.
Review
Chemistry, Multidisciplinary
Muruganantham Rethinasabapathy, Seyed Majid Ghoreishian, Seung-Kyu Hwang, Young-Kyu Han, Changhyun Roh, Yun Suk Huh
Summary: This review discusses recent progress and main research trends in hydrogen isotope storage and separation, with a focus on tritium. It highlights the use of metal hydrides, nanoporous zeolites, metal organic frameworks (MOFs), and 2-D layered graphene, h-BN, and MXenes based on their diverse functionalities.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Mahvash Afzal, Nandlal Gupta, Aashish Mallik, K. S. Vishnulal, Pratibha Sharma
Summary: This study continues the computational analysis of a reactor with hexagonal honeycomb-based heat transfer enhancements, investigating the performance of a metal alloy and the reactor experimentally. It determines the gravimetric capacity and reaction kinetics of the alloy La0.9Ce0.1Ni5, while also exploring the impact of operating conditions on reactor performance. Additionally, evaporative cooling is tested for the first time as a heat removal technique for metal hydride based hydrogen storage reactors and found to significantly improve heat transfer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Li Wang, Liuting Zhang, Xiong Lu, Fuying Wu, Xuan Sun, Hu Zhao, Qian Li
Summary: CrMnFeCoNi and CrFeCoNi high-entropy alloys (HEAs) were used to enhance the hydrogen storage performance of MgH2. Among them, Mn-containing HEAs nanosheets showed the best performance. The MgH2-CrMnFeCoNi composite could release 6.5 wt% H2 in 10 min at 300°C and started to absorb H2 at 40°C. After 20 cycles at 300°C, 97% of the hydrogen storage volume could be maintained, demonstrating good cycling performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Mingyu Fan, Ye Cui, Zhongwu Zhang, Liyuan Liu, Qian Li, Qun Luo
Summary: The effect of Ho addition on the oxidation behavior of Mg-Zn-Y-Ho alloys at 500 degrees C in air was investigated. Results showed that the addition of Ho can improve the high-temperature oxidation resistance of Mg-3Y-2Zn-12Ho alloys. With a 12 wt% Ho addition, the parabolic rate constant decreased by 75% compared to alloys without Ho addition. This improvement can be attributed to the formation of dense Ho2O3, which reduces the inward oxygen diffusion coefficient by 3 orders of magnitude compared to Y2O3. Additionally, the addition of Ho in the Mg-Y-Zn alloy maintained excellent tensile properties.
Article
Chemistry, Physical
Qian Li, Ning Miao, Jinling Zhong, Chengzhang Wu, Haiyan Leng
Summary: This study investigates the effect of KH on the hydrogen storage properties of graphene-doped MgH2, in comparison with KOH. The results demonstrate that the addition of 1 wt% KH and 1 wt% graphene significantly enhances the hydrogen storage performance of MgH2. It desorbs 6.0 wt% H2 within 30 min at 300°C, faster than pure MgH2. However, the desorption rate and activation energy are slower and larger, respectively, than the sample doped with KOH and graphene. Formation of the catalyst KMgH3 is observed with both KH and KOH, indicating that the H-H exchange between KH and MgH2 may suppress the desorption of MgH2, while the in-situ formed MgO by KOH addition promotes MgH2 desorption.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Jinzhou Li, Chao Chen, Zepeng Lv, Wansen Ma, Meng Wang, Qian Li, Jie Dang
Summary: A carbon, nitrogen co-doped porous Co2P catalyst anchored on bimetallic MXene nanosheets (MX@MOF-Co2P) exhibited excellent electrocatalytic performance for the oxygen evolution reaction (OER) with small overpotentials and low Tafel slope. The exceptional performance was attributed to the porous structure, electronic structure modulation, and synergistic effect between cobalt phosphide and MXenes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zepeng Lv, Jinshuai Fei, Yang You, Xuewei Lv, Qian Li, Jie Dang
Summary: Exfoliated Ti3C2Tx MXenes are used as a substrate to grow polypore N,Ni-Co2P nanoarrays through in situ interface-growth strategy, resulting in heterointerfaces for efficient overall water splitting.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Neurosciences
Linxuan Zhang, Zehao Zeng, Xiaoyu Lu, Mengqing Li, Jiayu Yao, Guangjing Zou, Zhaorong Chen, Qian Li, Changqi Li, Fang Li
Summary: Methamphetamine (Meth) is a highly addictive CNS stimulant, and effective treatment for Meth addiction is currently lacking. This study investigates the role of cell adhesion molecules (CAMs) in Meth addiction and specifically focuses on Contactin 1 (CNTN1). The findings suggest that CNTN1 expression in the nucleus accumbens (NAc) plays a crucial role in Meth-induced addiction, and the mechanism may involve the expression of synapse-associated proteins in the NAc. Silencing CNTN1 expression in the NAc can reverse Meth-induced conditioned place preference (CPP) and decrease the expression levels of NR2A, NR2B, and PSD95 in the NAc.
NEUROTOXICITY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Cheng Liu, Xiaohua Yang, Jianchao Peng, Bin Liu, Qun Luo, Qian Li, Kuo-Chih Chou
Summary: The deformation behaviors of a dual-phase Mg alloy containing α-Mg and 18R-LPSO phases were investigated in this study. The 18R phase, accounting for 11.3 vol.%, contributed to 23.0% of the overall alloy deformation. The coordinated twinning deformation of α-Mg matrix through the slip of basal dislocations and the kinking deformation of Mg slices induced by the 18R phase were observed during the early stage of deformation. At the end of deformation, a large number of T2-type stacking faults were generated, improving the ductility of the alloy. This work provides a novel strategy for designing high-strength and good ductility dual-phase Mg alloys.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Li Wang, Yuyuan Zhao, Xu Zhang, Qianwen Liu, Qun Luo, Zhihong Yu, Xiaohua Yang, Qian Li
Summary: This work investigates the influence of 2H and 3R phase content on the hydrogen storage and electrochemical properties of A5B19-type LaY2Ni10.6Mn0.5Al0.3 alloys. The results show that the 2H and 3R phases have similar hydrogen storage and electrochemical properties but different structural stability during cycling. The smaller volume expansion of the 2H phase leads to better structural and cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Qun Luo, Meng Cong, Hongxia Li, Longfei Zhu, Hongcan Chen, Qian Li
Summary: In this paper, an effective method for Fe removal from Al-7Si alloys by adding Sn is proposed. The Fe content reduction in Sn reaches 33.8%, comparable to adding B. More Fe-rich compounds are deposited at the bottom after Sn addition. The β-Sn was found to attach to the β-Al9Fe2Si2 phase, leading to more deposition of β-Al9Fe2Si2 due to its higher density compared to the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Hu Yao, Guang Zeng, Qinfen Gu, Kazuhiro Nogita, Jing Guo, Qian Li
Summary: The influences of microstructure evolution induced by thermal-mechanical processing on the hydrogen storage performance of Mg-Ni-Gd-Y-Zn-Cu alloys were investigated. The extruded alloy showed higher hydrogen absorption capacity and faster hydrogen ab/desorption kinetics due to refined alpha-Mg grains and the presence of 14H-type LPSO phases. These findings have implications for the design and manufacturing of magnesium-based hydrogen storage materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Zechun Wang, Shiyao Chen, Shenglan Yang, Qun Luo, Yancheng Jin, Wei Xie, Lijun Zhang, Qian Li
Summary: In recent years, high-entropy alloys (HEAs) have attracted a lot of attention in the materials community, and significant progress has been made in exploring the potential of lightweight refractory high-entropy alloys (RHEAs) with excellent high-temperature properties. This paper provides a comprehensive review of the recent progress and status of lightweight RHEAs, including classifications, fundamental data, computational approaches, preparation techniques, mechanical properties, and behaviors at different temperatures.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Applied
Wansen Ma, Zeming Qiu, Jinzhou Li, Liwen Hu, Qian Li, Xuewei Lv, Jie Dang
Summary: Developing efficient and low-cost non-noble metal-based bifunctional catalysts for hydrogen and oxygen evolution reactions in alkaline media is challenging but meaningful. The key to improving reaction efficiency is to enhance the catalyst's electronic structure for optimized adsorption of intermediates and reduced reaction energy barrier. In this research, a V-doped Co2P coupled with high-entropy MXene heterostructure catalyst was prepared and showed excellent HER and OER activity and long-term stability. This work provides new strategies for the application of high-entropy MXene and the design of novel non-noble metal-based bifunctional electrolytic water catalysts.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Wansen Ma, Meng Wang, Chaowen Tan, Jiancheng Wang, Yanan Dai, Liwen Hu, Xuewei Lv, Qian Li, Jie Dang
Summary: Surface regulation of electrocatalysts is crucial for improving alkaline hydrogen evolution reaction (HER) performance. In this study, transition metal-doped Ni3N nanosheets were prepared and studied for efficient alkaline HER. Experimental and computational characterization demonstrated the unique electronic structure and composition of the catalysts. The down-shifting of d-band center and transition metal doping facilitated the adsorption of water and significantly enhanced the alkaline HER performance. The V-doped Ni3N catalyst exhibited remarkable activity with low overpotential, suggesting a promising strategy for rational design of efficient HER electrocatalysts.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Wenxian Li, Zulin Sun, Riyue Ge, Jiancheng Li, Yiran Li, Julie M. M. Cairney, Rongkun Zheng, Ying Li, Sean Li, Qian Li, Bin Liu
Summary: MoS2 with 2D structure shows efficient HER performance, and the La-doped Ni3S2/MoS2 heterointerface with nanoflower-like structures exhibits excellent OER performance. The La-NMS@NF heterostructure optimizes the water and H* adsorption/desorption, improving HER performance.
Article
Metallurgy & Metallurgical Engineering
Li Qian, Liu Kai, Zhao Tianliang
Summary: The effect of elastic tensile stress on the phase composition and structure of the rust layer formed on Q235 carbon steel in 5% NaCl salt spray was investigated. The results showed that the elastic tensile stress accelerated anodic dissolution, promoting the formation of -FeOOH. Different stress levels resulted in changes in the mass fractions of gamma-FeOOH, alpha-FeOOH, and Fe3O4/gamma-Fe2O3 in the rust layer. Additionally, the stress increased the thickness and decreased the compactness of the rust layer, enhancing its protective capability.
ACTA METALLURGICA SINICA
(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)
