Article
Chemistry, Analytical
Bo Kan, Weijie Wu, Zixuan Yang, Xuewei Zhang, Jinxu Li
Summary: This study investigated the corrosion behavior of 2205 DSS under the influence of HP and pH, finding that high HP reduces corrosion resistance and impacts the composition and compactness of the oxide film. The optimal cathodic protection potential shifts in the positive direction with the increase in HP.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Jiangtao Fan, Gang He, Zhenzhu Cao, Yongfan Cao, Zhen Long, Zhanggui Hu
Summary: Through the synthesis of a system of acceptor Gd3+ and donor Ta5+ co-doped (Gd0.5Ta0.5)xTi1-xO2 (GTTOx, x = 0, 0.01, 0.02, 0.04, 0.06) ceramics, dielectric response is enhanced. A colossal permittivity (CP, 2.65 x 104@1 kHz, 2.37 x 104@1 MHz), a very low dielectric loss (tano, 0.007@1 kHz, 0.03@1 MHz), good stability of frequency (20-106 Hz) and temperature (RT-250 degrees C, D epsilon 0 (T)/epsilon 030 < +/- 15%, at 1 kHz) were achieved simultaneously in GTTO0.01 ceramic. The main reasons for the improved dielectric properties are the synergistic effect of the electron pinning defect-dipole (EPDD) model, the internal blocking layer capacitance (IBLC) mechanism, and electrode response. This work provides a promising approach for the design of defect-related high-performance giant dielectric ceramics.
JOURNAL OF MATERIOMICS
(2023)
Article
Metallurgy & Metallurgical Engineering
Sonia Mameri, Dalila Boughrara, Florica Lazar, Jean-Paul Chopart
Summary: Cathodic polarization facilitates the release of hydrogen, while weakening or preventing the formation of calcareous deposits on the steel surface. After polarization cessation, corrosion kinetics is decelerated under high cathodic potentials, likely due to surface blockage by adsorbed hydrogen.
STEEL RESEARCH INTERNATIONAL
(2022)
Article
Electrochemistry
Chun-Yao Wang, Yao-Tien Tseng, Jing-Chie Lin, Yong-Jie Ciou, Yean-Ren Hwang
Summary: Cu-Zn alloy micropillars were fabricated using MAGE technique, showing different zinc content and grain sizes under various electroplating conditions. Nano-indentation tests and electric field simulations indicate that the micropillars with 40.51at% zinc exhibit the highest hardness and Young's modulus.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
H. Salhi, A. Mleiki, R. M'nassri, H. Rahmouni, L. Ajili, K. Khirouni
Summary: In this study, the La0.4Bi0.3Sr0.2Ba0.1MnO3 compound was synthesized by the sol-gel method, and its structural and electrical properties were investigated. The compound showed a rhombohedral crystalline phase and exhibited semiconductor behavior in the explored temperature range. The electrical conductivity followed different mechanisms at different temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Allan J. M. Araujo, Francisco J. A. Loureiro, Rafael A. Raimundo, Daniel A. Macedo, Carlos A. Paskocimas, Duncan P. Fagg
Summary: This study investigates the potential of the [BaCoO3] [BaCo8O11] family as a cathode or anode for solid oxide fuel cells or electrolyser cells. The electrochemical analysis shows that the performance of the Ba2Co9O14/Ce0.8Gd0.2O2-δ composite electrode is improved under cathodic polarization but impaired under anodic polarization. These results highlight the higher potential of Ba2Co9O14 as a cathode material for intermediate-temperature solid oxide fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
F. Sourani, K. Raeissi, M. H. Enayati, M. Kharaziha, A. Hakimizad, G. Blugan, H. R. Salimijazi
Summary: This study aimed to develop a ZrO2-Al2O3 composite coating with excellent mechanical, corrosion, and tribocorrosion behavior on a Zr-2.5 Nb alloy substrate for load-bearing implants. The composite coatings were produced using plasma electrolytic oxidation with cathodic duty cycles of 10, 20, and 40 in an aluminate-phosphate electrolyte bath. The coating developed with a cathodic duty cycle of 40 exhibited the highest corrosion performance and improved hardness. It also showed minimal volume loss and no potential fall-out in the tribocorrosion test. In summary, the ZrO2-Al2O3 composite coating developed by the PEO process demonstrated enhanced corrosion and tribocorrosion performance, making it suitable for knee implants.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Mahla Seifzadeh Omrani, Mohsen Karimi, Mansoor Bozorg
Summary: In this study, TiN layers were deposited on coarse- and nano-grained AISI 301 stainless steel sheets. The coating on the nano-grained substrate exhibited greater thickness, finer surface morphology, higher hydrophobicity, and excellent adhesion quality. Additionally, it showed the best corrosion resistance among all the samples.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Energy & Fuels
Allan J. M. Araujo, Francisco J. A. Loureiro, Laura I. Holz, Vanessa C. D. Graca, Joao P. F. Grilo, Daniel A. Macedo, Carlos A. Paskocimas, Duncan P. Fagg
Summary: This article analyzes the electrode performance of misfit-layered calcium cobaltite as a cathode and anode for solid oxide fuel cell and solid oxide electrolysis cell, respectively, using electrochemical impedance spectroscopy. The addition of Ce0.8Gd0.2O2-delta as a composite electrode phase significantly improves the electrochemical processes and reduces the polarization resistance. Short-term stability testing demonstrates that the composite material shows stable current density and no observable microstructure delamination at 700°C.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Ceramics
Neslihan Turan, Pinar Oruc, Yesim Demirolmez, Ayten Seckin, Ali Orkun Cagirtekin, Sukru Cavdar, Haluk Koralay, Nihat Tugluoglu
Summary: Zn0.95Co0.05O was synthesized by sol-gel method and prepared into pellets for investigation on its structural, morphological, electrical, and impedance properties. The temperature-dependent impedance analysis revealed that Zn0.95Co0.05O exhibits a negative temperature coefficient of resistance similar to semiconductors, with contributions from grains and grain boundaries to conduction and polarization processes.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
F. Sourani, K. Raeissi, M. H. Enayati, M. Kharaziha, A. Hakimizad, G. Blugan, H. R. Salimijazi
Summary: The study aimed to develop a ZrO2-Al2O3 composite coating with excellent mechanical, corrosion, and tribocorrosion behavior for load-bearing implants. By adjusting the cathodic duty cycles, the composite coatings exhibited improved thickness, compactness, and hardness, showing enhanced corrosion performance and low volume loss during tribocorrosion testing. These findings highlight the potential of the composite coating for knee implants.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Wenting Xia, Zhiwei Chen, Guoqing Zhang, Wei Zhang, Fuguo Liu, Caiqi Yao, Zhifeng Lin, Weihua Li
Summary: The study found that under atmospheric conditions, ZRCs provide good protection for the steel substrate, while corrosion issues still persist under immersion. The wire beam electrode provides detailed information on surface current density distribution and associated processes during the cathodic protection stage of ZRCs.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Jinxia Wang, Xiangyue Liu, Hongwei Xie, Huayi Yin, Qiushi Song, Zhiqiang Ning
Summary: The study found that a vertical magnetic field significantly reduces the charge transfer impedance of Al2Cl7- electrochemical reduction, while increasing the capacitance of the electric double layer (EDL) and the density of the electrodeposited aluminum layer.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Materials Science, Multidisciplinary
J. Mera, O. Moran
Summary: Nanocrystalline ZnO films were prepared and their structural and electrical properties were studied using X-ray diffraction and impedance spectroscopy.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Applied
Xiangtian Xiao, Taikang Ye, Jiayun Sun, Xiangwei Qu, Zhenwei Ren, Dan Wu, Shihao Ding, Xiao Wei Sun, Wallace C. H. Choy, Kai Wang
Summary: A capacitance-voltage (C-V) model is established to describe carrier behaviors in perovskite light-emitting diodes (PeLEDs) and is used to guide the improvement of electroluminescence (EL) performance. High hole injection barrier and insufficient recombination are revealed and addressed by the design of a MoO3 interface layer, leading to an improved external quantum efficiency in the optimized PeLED.
APPLIED PHYSICS LETTERS
(2022)
Article
Electrochemistry
Glenda Ribeiro de Barros Silveira Lacerda, Garbas Anacleto dos Santos Junior, Maria Luiza Miranda Rocco, Rodrigo Lassarote Lavall, Tulio Matencio, Hallen Daniel Rezende Calado
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Physical
R. F. Martins, D. A. A. Martins, L. A. C. Costa, T. Matencio, R. M. Paniago, L. A. Montoro
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Green & Sustainable Science & Technology
Marina Domingues Fernandes, Victor Bistritzki, Rosana Zacarias Domingues, Tulio Matencio, Marcia Rapini, Ruben Dario Sinisterra
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2020)
Article
Chemistry, Physical
Vivien Gatard, Deborah De Masi, Raphael Chattot, Irene Mustieles Marin, Juan Manuel Asensio Revert, Pier-Francesco Fazzini, Thierry Encinas, Vincent Martin, Stephane Faure, Jonathan Deseure, Julian Carrey, Bruno Chaudret, Marian Chatenet
Summary: This study focused on investigating different catalysts for oxygen evolution and hydrogen evolution reactions by recording cyclic voltamperograms. Ni and FeNi3 were found to be good catalysts for HER and OER. Electrochemical tests under alternating magnetic field are being conducted to explore the compatibility of these catalysts with AMF activation.
Article
Polymer Science
Raul Guimaraes, Miguel L. Laper, Vinicius G. de Castro, Glaura G. Silva, Ludmila G. O. Xavier, Tulio Matencio, Manuel Houmard, Eduardo H. M. Nunes
Summary: This study demonstrates the preparation of three-dimensionally ordered macroporous polymer structures through ice-templating, using PVA as a model system. The addition of MWCNTs showed a strengthening effect on the scaffolds, with different freezing routes influencing mechanical stability and electrical conductivity. The obtained materials exhibited high porosity above 85%, making them potentially useful in various applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Farid Aubras, Maha Rhandi, Jonathan Deseure, Amangoua Jean-Jacques Kadjo, Miloud Bessafi, Jude Majasan, Brigitte Grondin-Perez, Florence Druart, Jean-Pierre Chabriat
Summary: Water electrolysis is seen as a sustainable solution for hydrogen production, with proton exchange membrane electrolyzers playing a crucial role in hydrogen technology development. Mathematical analysis of PEM-E efficiency is an effective tool for device improvement, demonstrated through a closed-form solution of single cell PEM-E modelling and consideration of charge and mass transport balances using dimensionless parameters. Experimental data supports the analytical model, which also explores the impact of two-phase flow regimes on electrochemical performances through optimization methods.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Angela L. Andrade, Katia J. de Almeida, Erico T. F. Freitas, Aline M. Mesquita, Marcio C. Pereira, Jose D. Fabris, Luis E. Fernandez-Outon, Jose D. Ardisson, Rosana Z. Domingues
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Energy & Fuels
Farid Aubras, Cedric Damour, Michel Benne, Sebastien Boulevard, Miloud Bessafi, Brigitte Grondin-Perez, Amangoua J-J Kadjo, Jonathan Deseure
Summary: This study proposes a signal-based diagnosis method for PEM WE anode pump faults, which is non-intrusive and efficient, providing a significant economic and technical advantage in fault diagnosis for PEM WE systems.
Article
Multidisciplinary Sciences
Jonathan Deseure, Jamila Obeid, John C. Willison, Jean-Pierre Magnin
Summary: This study examined the experimental results of hydrogen production through anaerobic photosynthesis using the purple non-sulfur bacterium Rhodobacter capsulatus. The research utilized continuous stirred tank reactors (CSTR) technique to analyze kinetic parameters and models like Luedeking-Piret and Gompertz to simulate hydrogen production and bacterial growth. The mathematical description suggested that photofermentation is a more promising method than dark fermentation for converting organic substrates into biogas.
Article
Chemistry, Multidisciplinary
Ludmila G. O. Xavier, Therese C. Ebambi, Renata Diniz, Vanessa F. C. Lins, LucianoA Montoro, Tulio Matencio
Summary: In this study, two catalysts, lanthanum manganite strontium-doped perovskite without (LSM) and with (LSMMO) mixed molybdenum oxides, were synthesized and deposited on carbon cloth substrates. Their performance as cathodes in the hydrogen peroxide reduction reaction (HPRR) and oxygen reduction reaction (ORR) was investigated. The results showed that the LSMMO catalyst exhibited higher catalytic activity and power density compared to LSM.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Assia Karrab, Laureline Lecarme, Jean Claude Lepretre, Ali Nourdine, Jonathan Deseure, Salah Ammar
Summary: In this manuscript, a new non-lethal method for the preparation of photoelectrodes is proposed and characterized using various techniques. The results showed that the Fe2O3/Ni(OH)(2) photoanode exhibited the highest photocurrent when urea was added, providing guidance for the design of efficient photocatalytic urea conversion using Fe2O3/Ni(OH)(2).
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Vivien Gatard, Irene Mustieles Marin, Deborah De Masi, Thierry Encinas, Frederic Charlot, Vincent Martin, Mimoun Aouine, Christophe Geantet, Stephane Faure, Jonathan Deseure, Julian Carrey, Bruno Chaudret, Marian Chatenet
Summary: This study aims to investigate the influence of an electrochemical environment combined with an alternating magnetic field (AMF) on FeNi3@Ni nanoparticles. The effect of the aggressive alkaline environment and temperature on the catalysts was studied using in situ techniques. The results provide insights into the long-term durability of this catalytic material in AMF-enhanced alkaline water electrolysis.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Marian Chatenet, Bruno G. Pollet, Dario R. Dekel, Fabio Dionigi, Jonathan Deseure, Pierre Millet, Richard D. Braatz, Martin Z. Bazant, Michael Eikerling, Iain Staffell, Paul Balcombe, Yang Shao-Horn, Helmut Schaefer
Summary: This article explores the use of hydrogen as a sustainable energy carrier, focusing on electrocatalytic water splitting. It covers the fundamentals of the process, the latest scientific findings, and the current industrial processes and large-scale applications. The article also discusses strategies for optimizing electrode materials and includes a technoeconomic analysis of water electrolysis. Overall, it aims to promote collaboration and exchange among researchers in different fields.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Materials Science, Multidisciplinary
Sicele Luciana Abreu Goncalves, Eric Marsalha Garcia, Hosane Aparecida Taroco, Tulio Matencio
Summary: This study explores the use of electrolytic solutions from exhausted lithium-ion batteries cathodes to prepare coatings to prevent chromium volatility on the ferritic stainless steel interconnector surface. After optimization, coatings with a homogeneous microstructure that can block chromium volatility were obtained.
MATERIA-RIO DE JANEIRO
(2021)
Article
Engineering, Chemical
Sicele L. A. Goncalves, Eric M. Garcia, Hosane A. Taroco, Tulio Matencio
