Article
Chemistry, Physical
Wanyi Liao, Qin Zhao, Shanshan Wang, Yiling Ran, Hong Su, Rong Gan, Shun Lu, Yan Zhang
Summary: The high energy consumption in water electrolysis systems is attributed to the slow kinetics of the oxygen evolution reaction (OER). Substituting thermodynamically advantageous small molecule oxidation reactions for OER can significantly improve energy conversion efficiency. Studying the in-depth reaction mechanism of complex substrates is necessary due to their elemental composition. This review focuses on the electrooxidation mechanism of different substrate molecules, such as ethanol, urea, and hydrazine, and introduces design ideas and strategies for high-performance electrocatalysts in relation to reaction path selectivity. The challenges in achieving industrial transformation in this field are also discussed.
JOURNAL OF CATALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Xuehui Hao, Qixiang Fan, Yuanyuan Li, Ruping Miao, Jie Ma, Hui Chen, Xingchuan Zhao, Changzheng Wang
Summary: The study compared the structural, mechanical, and corrosion behaviors of homogeneous and gradient CrAlSiN coatings, finding that the homogeneous coating had a consistent chemical composition and phase structure, while the gradient coating exhibited variations in composition and microstructure from the coating/substrate interface to the surface. Both coatings had similar hardness, but the gradient coating showed better performance in plastic deformation resistance and adhesive strength, along with lower corrosion rate and higher protective efficiency.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Fuping Li, Yue Wang, Wei Dang, Zhuoli Xu, Xinyuan Zhang, Kang Zhao, Xu Hu, Yufei Tang
Summary: PCS-derived coatings with crack-free morphology and superior oxidation resistance were prepared on Q235 steels by dip-coating method. The effects of glass filler content on the composition, morphology, interface, and oxidation resistance of the coatings were investigated. It was found that the addition of glass filler can fill the cracks resulted from polycarbosilane shrinkage during pyrolysis, leading to crack-free coatings and improved oxidation resistance.
Article
Materials Science, Ceramics
Yingyi Zhang, Tao Fu, Laihao Yu, Fuqiang Shen, Jie Wang, Kunkun Cui
Summary: The oxidation behavior of Si-MoSi2 composite coating on TZM alloy at 1200℃ in air was investigated. The coated samples showed excellent oxidation resistance at medium temperature due to the formation of self-healing SiO2 protective layer and the dense structure of the coating.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Y. D. Liu, J. Sun, W. Li, W. S. Gu, Z. L. Pei, J. Gong, C. Sun
Summary: The cyclic oxidation behavior of a NiCrAlYSi + NiAl/cBN abrasive coating at 900 degrees C was studied, revealing elemental interdiffusion and the formation of interdiffusion zone (IDZ) and secondary reaction zone (SRZ) during aluminization. Changes in composition and structures were observed during oxidation, affecting the mechanical properties of the system. The transformation of the AlN interfacial layer during aluminization and oxidation also impacted the behavior of the coating-substrate system.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Elias Mondaca-Medina, Roberto Garcia-Carrillo, Hyein Lee, Yufei Wang, He Zhang, Hang Ren
Summary: Electrochemical phase transition plays a critical role in processes such as gas generation, electrodeposition, and metal production. Understanding the kinetics, mechanism, and structure of nucleation in these reactions is essential. This perspective provides a brief review of theories and methods, focusing on nanoelectrochemistry and single-entity electrochemistry approaches, and discusses open questions and potential future approaches.
Article
Materials Science, Ceramics
Adam Bratten, Jiaqi Duan, Andrew Hoffman, Haiming Wen, Xiaoqing He, John D. Stempien
Summary: This study characterized the microstructures of two variants of matrix-grade graphite and correlated them to oxidation behavior. It was found that the A3-3 type graphite contained a higher volume fraction of partially graphitized carbon, contributing to its accelerated oxidation in the chemical reaction-controlled regime.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Hui Yang, Hongsheng Zhao, Taowei Wang, Xiaoxue Liu, Kaihong Zhang, Ziqiang Li, Yuan Gao, Bing Liu
Summary: The multi-layered SiC coating on graphite spheres enhances their antioxidant performance, protecting internal layers from oxidation. The oxidation process consists of three stages, with an amorphous SiO2 layer acting as a protective shell and carbon particles developing at the interface.
Article
Materials Science, Multidisciplinary
Junkai Liu, Zhe Hao, Zhexin Cui, Dayan Ma, Junqiang Lu, Yanguang Cui, Chong Li, Wenbo Liu, Shijing Xie, Pengfei Hu, Ping Huang, Guanghai Bai, Di Yun
Summary: The study found that the CrN coating significantly enhances the oxidation resistance of Zircaloy in high-temperature steam by forming a dense oxide layer, reducing cracking and spalling. Two different multi-layered coatings were formed after oxidation, and internal oxidation of Zr particles within the nitride coating was observed.
Article
Materials Science, Coatings & Films
R. Troncy, L. Boccaccini, G. Bonnet, X. Montero, M. C. Galetz, F. Pedraza
Summary: This study explores a new type of self-healing coating for high temperature oxidation applications. Micro-reservoirs consisting of an aluminium-rich intermetallic core and an aluminium oxide shell are embedded in a nickel aluminide matrix. The micro-reservoirs form a diffusion barrier and release aluminium into the coating matrix, maintaining a sufficient amount of aluminium and increasing the lifespan of the coating.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zhongwei Zhang, Qinggui Xiao, Xuan Du, Tianyan Xue, Zhanpeng Yan, Zhifu Liu, Hui Zhang, Tao Qi
Summary: A novel Ti/PbO2 electrode modified with Ti4O7 was synthesized and characterized for its surface morphology and electrochemical performance. The results showed that the Ti4O7 composite modification improved the surface morphology and crystal plane orientation of the electrode, leading to enhanced removal efficiency for phenol degradation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Xin Yu, Kang Wang, Xitao Wang
Summary: Magne??li-phase Ti4O7 is an excellent anode material for electrochemical advanced oxidation process (EAOP), but its development has been limited by high cost and high energy consumption. In this study, a carbon-coated Ti4O7 electrode was successfully synthesized with high specific surface area and efficient electron transfer. It exhibited excellent stability and achieved complete degradation of phenol in 60 minutes under optimal conditions. The mechanism of phenol degradation was investigated, showing that it is mainly attributed to the synergistic effects between adsorbed ???OH (M (???OH)) and Cl??? on the surface of the C-coated Ti4O7 electrode.
ELECTROCHIMICA ACTA
(2023)
Review
Chemistry, Physical
Liangxu Lin, Naihua Miao, Gordon G. Wallace, Jun Chen, Dan A. Allwood
Summary: The electrochemical oxygen reduction reaction is crucial in energy conversion technologies, and the use of low-cost and durable carbon materials as efficient catalysts shows promise for future applications. Research efforts are focusing on understanding catalytic mechanisms and engineering techniques to improve the performance and selectivity of these carbon catalysts. Future improvements in carbon catalysts are expected to lead to more efficient and reliable energy conversion technologies.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Davide Casotti, Andrea Gaiardo, Matteo Valt, Barbara Fabbri, Giuseppe Cruciani, Vincenzo Guidi
Summary: The study investigated the oxidation/desulphurization of CdS to CdO and intermediate phases by annealing CdS films on different substrates. It found that the relative stability of CdO and 2CdO·CdSO4 phases is greater on alpha-Al2O3 than on glazed porcelain substrate. Additionally, a mixed phase of CdO and 2CdO·CdSO4 was obtained at 800 degrees C when films were deposited on nickel and polycrystalline silica substrates.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
A. B. B. Chaar, L. Rogstrom, M. P. Johansson-Joesaar, J. Barrirero, H. Aboulfadl, N. Schell, D. Ostach, F. Mucklich, M. Oden
Summary: The thermal behavior of cathodic arc deposited TiAlN coatings is affected by the microstructure, with different microstructures influencing the decomposition pathway and performance of the coatings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Shakhawat Hossain, Nass Toufiq Tayeb, Farzana Islam, Mosab Kaseem, P. D. H. Bui, M. M. K. Bhuiya, Muhammad Aslam, Kwang-Yong Kim
Summary: The optimum configuration of a micromixer with two-layer crossing microstructure was determined using mixing analysis, surrogate modeling, and an optimization algorithm, resulting in a 32.0% enhancement in mixing index compared to the reference design. Three design variables were considered, and the design space was constrained through a primary parametric study before choosing optimal designs surrounded by design constraints using Latin hypercube sampling.
Review
Chemistry, Multidisciplinary
Mosab Kaseem, Karna Ramachandraiah, Shakhawat Hossain, Burak Dikici
Summary: This review presents recent developments in the synthesis of layered double hydroxide (LDH) on anodized films of Mg alloys and their applications as smart chloride traps. The unique structure of LDH nanocontainers and the influences of different variables on the electrochemical response of the LDH/anodic film composites are highlighted. The correlation between the dissolution rate of PEO coating and the growth rate of the LDH film, as well as the challenges and future development strategies of LDH/anodic films, are also discussed.
Article
Engineering, Environmental
M. Kaseem, T. Hussain, U. R. Zeeshan, H. W. Yang, B. Dikici, Y. G. Ko
Summary: The hybridization of organic compounds with inorganic layers has led to the discovery of novel organic-inorganic hybrid materials with unique properties, such as a high corrosion stability and balanced catalytic activity. The successful deposition of a functionalized coating with flower-flake structures on defective surfaces has been achieved through a layer-by-layer self-assembly process. The main reason for the performance of the coating is believed to be the formation of stable coordination complexes due to molecular orbital interactions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Materials Science, Multidisciplinary
Mosab Kaseem, Burak Dikici
Summary: This review summarizes the impact of organic additives on the electrical response and plasma discharges behavior during the PEO process, as well as the influence on the corrosion behavior of PEO coatings. Future directions and challenges regarding industrial applications of PEO coatings made in organic electrolytes are highlighted.
Article
Nanoscience & Nanotechnology
M. P. Kamil, Y. G. Ko
Summary: The self-assembly of Cu-3(PO4)(2)-bovine serum albumin hybrid nanoflowers on a tailored alumina platform results in a hierarchical structure similar to nanocarnation petals. This hybrid architecture shows an adaptive microstructure in different aqueous environments, providing dual functionality based on electrochemical stability and catalytic activity towards organic pollutant degradation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Oktay Yigit, Niyazi Ozdemir, Burak Dikici, Mosab Kaseem
Summary: Nano-hydroxyapatite-matrix coatings containing graphene nanosheets were successfully coated on Ti6Al7Nb alloys through plasma electrolytic oxidation treatment, improving the coating's hardness and corrosion resistance.
Review
Polymer Science
Mosab Kaseem, Zeeshan Ur Rehman, Shakhawat Hossain, Ashish Kumar Singh, Burak Dikici
Summary: This study highlights the fabrication methods and performance characterization of PLA/silica composites, emphasizing their excellent performance in rheological, thermal, mechanical, and biodegradation properties, and exploring the potential applications of silica in the PLA matrix.
Article
Metallurgy & Metallurgical Engineering
S. Fatimah, M. P. Kamil, D. Han, W. Al-Zoubi, Y. G. Ko
Summary: Plasma electrolytic oxidation (PEO) is a promising surface treatment for generating anti-corrosive coatings on lightweight metals. This study demonstrates that using sub-zero electrolyte can improve the coating compactness and corrosion resistance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Engineering, Chemical
Tassawar Hussain, Muhammad Hussain, Sajjad Hussain, Mosab Kaseem
Summary: The microwave-assisted synthesis of NiTe2 as a catalyst has been reported for efficient photocatalysis application in degrading organic pollutants in water. The unique structure of NiTe2 provides a high surface area for effective degradation, while solving the issue of catalyst separation after treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
M. P. Kamil, T. Suhartono, Y. G. Ko
Summary: This study emphasized the synergistic effect of PEDOT:PSS with TiO2 coating in preventing corrosion of valve metals, with citric acid as a cross-linking agent to enhance its protective effect. Excessive citric acid led to harmful clusters of PEDOT:PSS on TiO2 surface, while adding 1 wt.% citric acid resulted in superior corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
Mosab Kaseem, Tehseen Zehra, Burak Dikici, Ali Dafali, Hae Woong Yang, Young Gun Ko
Summary: The unique interactions between HA and ALB molecules on the surface of the porous layer of AZ31 Mg alloy were utilized to fabricate a novel hybrid composite film with excellent electrochemical stability. The interaction between ALB and HA molecules can effectively reduce the exposed area to corrosive species, protecting the substrate from corrosion. The porous structure of the IL facilitates the formation of physical and chemical locking, leading to the heterogeneous nucleation and crystal growth of the organic layer.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Multidisciplinary
Mosab Kaseem, Burak Dikici, Hongfei Liu
Summary: By adding sodium citrate into the electrolyte, the formation of a high-density alumina layer with high chemical stability was controlled successfully. Experimental results showed that the oxide layer obtained from the electrolyte with 5 g/L sodium citrate exhibited the highest chemical stability in a corrosive solution.
Article
Materials Science, Multidisciplinary
M. P. Kamil, D. Sandyaning, A. S. Wismogroho, K. Corneliasari, B. Hermanto, T. Sudiro, A. Afandi
Summary: This study investigated a Ni-38Mo binary alloy, focusing on Ni solid solution and Ni-Mo intermetallic phases. A homogeneous Ni-Mo alloy powder obtained by mechanical alloying was consolidated using spark plasma sintering (SPS). The main phases observed after sintering were a Ni(Mo) solid solution and the delta-NiMo intermetallic phase.
Review
Metallurgy & Metallurgical Engineering
Arash Fattah-alhosseini, Razieh Chaharmahali, Sajad Alizad, Mosab Kaseem
Summary: Mg and its alloys are promising biodegradable materials for biomedical implants. However, their rapid corrosion within the body poses a challenge. Surface modification techniques, such as PEO, have been developed to enhance their corrosion resistance and bioactivity. Adding hydroxyapatite particles during the coating process improves the performance of Mg-based implants. This review provides an overview of recent advances in the application of HAp particles on Mg-based implants by PEO.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ahmad Keyvani, Neda Kamkar, Razieh Chaharmahali, Milad Bahamirian, Mosab Kaseem, Arash Fattah-alhosseini
Summary: Orthopaedic implants often use magnesium and its alloys, which have better mechanical compatibility with bone tissue but lower corrosion resistance. This study investigated the use of plasma electrolytic oxidation (PEO) to modify the surface of AZ31 magnesium alloy and examined the effects of different concentrations of hydroxyapatite (HA) nanoparticles on coating morphology and corrosion characteristics. The sample with 3 g/l HA showed the best anticorrosion performance with the smallest average pore size, thickest coating, and lowest corrosion current density.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)