Article
Electrochemistry
Maryam AlNahyan, Ibrahim Mustafa, Amal Alghaferi, Faisal Almarzooqi
Summary: Adding 3DG additives with variable particle sizes to in-lab fabricated CNT fibers can improve the kinetics and mass transport capabilities of buckypaper electrodes. The improvement in kinetics becomes more significant as the 3DG particle size decreases.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Multidisciplinary
Jing Huang, Guanchao He, Kang Huang, Minmin Yan, Zhongkun Zhao, Hongtao Sun, Gonglan Ye, Huilong Fei
Summary: In this study, iron single atoms supported on a monolithic porous graphene film (Fe1-PGF) were employed as electrodes for catalyzing the VO2+/VO2+ redox couple. The Fe1-PGF electrode exhibited improved electrochemical performance compared to metalfree PGF and commercial graphite felt electrode due to the high intrinsic catalytic activity, superior surface hydrophilicity, enhanced mass transfer efficiency, and exposure of active sites. The single-cell battery assembled with Fe1-PGF showed a high voltage efficiency (77.96%) and energy efficiency (70.27%) at a current density of 60 mA cm-2, along with lower overpotential and higher rate capability. This study demonstrates the promising application of single atom catalysts (SACs) in catalyzing vanadium redox couples in VRFBs and encourages further exploration in other types of redox flow batteries.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Laura Garcia-Alcalde, Zoraida Gonzalez, Daniel Barreda, G. Victoria Rocha, Clara Blanco, Ricardo Santamaria
Summary: The energy efficiency of VRFB greatly relies on the electrochemical performance of the electrodes, where carbon-based felts are commonly used. Functionalized carbon nanotubes or graphene oxide can improve the electrical behavior of these electrodes.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Mark A. Buckingham, Kristine Laws, Edward Cross, Andrew J. Surman, Leigh Aldous
Summary: Thermogalvanic devices can recover wasted thermal energy, but the use of safe chemicals is essential. This study explored various anionic polycarboxylate and polyaminocarboxylate ligands as potential replacements for the widely used [Fe(CN)(6)](3-/4-) redox couple.
Article
Chemistry, Multidisciplinary
Zhenheng Sun, Jiecai Fu, Yaxiong Zhang, Yupeng Liu, Situo Cheng, Yin Wu, Zhipeng Shao, Xiaosha Cui, Erqing Xie
Summary: This study establishes an electrochemical kinetic evolution model of redox electrolyte in the electrode, revealing that the redox reaction of electrolyte originates from charge transfer between ions in the electric double layer. By adjusting the electrolyte concentration, the electrochemical performance is optimized, and the decline of coulombic efficiency is systematically analyzed.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Chenxi Liu, Xiaotong Li, Yuan Yao, Weiran Wu, Bao Guo, Songtao Lu, Wei Qin, Xiaohong Wu
Summary: A tandem redox strategy using Prussian blue as a reactivator is reported to boost the desalination capacity of aqueous redox flow battery desalination. This system achieved a desalination capacity of 651.2 mAh, surpassing the theoretical limit of 315.9 mAh. It also demonstrated high NaCl removal efficiency and low salt energy consumption, making it superior to previously reported desalination RFBs.
Article
Chemistry, Physical
Devesh Kumar Singh, Mamta Yadav, Vellaichamy Ganesan, Preeti A. Bhobe
Summary: In this study, a cobalt- and vanadium-containing mixed oxide is synthesized and combined with a covalent organic polymer to create a composite material. The composite shows higher activity and stability, attributed to the presence of the VO2+/VO2+ couple.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Liguang Wang, Tongchao Liu, Alvin Dai, Vincent De Andrade, Yang Ren, Wenqian Xu, Sungsik Lee, Qinghua Zhang, Lin Gu, Shun Wang, Tianpin Wu, Huile Jin, Jun Lu
Summary: The study reveals that manganese-related phase reaction inhomogeneity coupled with transition metal rearrangement triggers electrochemical degradation in lithium-rich layered cathode, presenting the most critical challenge for Li-rich materials. These findings provide new insights into electrochemical degradation and offer opportunities for design improvements in cathode materials.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Miji E. Joy, Anand Kumar Tripathi, Rubul Das, Rajan Maurya, Manoj Neergat
Summary: The research found that the actual resistance increased significantly with time and rotation speed on Nafion-containing glassy carbon electrodes, possibly due to the sulfonate group of the polymer attacking the redox couple. Internal and external mass transfer characteristics were better resolved compared to their inorganic counterparts.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Archana Kaliyaraj Selva Kumar, Richard G. Compton
Summary: Cyclic voltammetry and single-entity electrochemistry were used to evaluate the electrocatalysis of the VO2+/VO2+ redox couple by bamboo-like multiwalled carbon nanotubes. It was found that individual nanotubes accelerated the oxidation reaction but retarded the reduction reaction. When an ensemble of nanotubes was drop-casted onto a glassy carbon electrode, an electrochemically nearly reversible response was observed and explained by changes in mass transport regime.
Article
Engineering, Environmental
Junfeng Li, Kwan San Hui, Yunshan Zheng, Shunping Ji, Kaixi Wang, Chenyang Zha, Duc Anh Dinh, Xi Fan, Fuming Chen, Zongping Shao, Kwun Nam Hui
Summary: Rechargeable aluminum-ion batteries (AIBs) have attracted considerable attention as a desirable device for largescale energy storage. However, the current AIBs often suffer from sluggish electrode reaction kinetics and rapid capacity fading, as well as poor structural stability of cathode materials. In this study, we investigate the Al storage behavior and mechanism of NiS2/S-doped carbon cathode and develop NiS2/S-doped carbon@S-doped carbon nanofiber as the cathode for AIBs. The as-fabricated AIB exhibits unprecedented Al3+ storage performance, with a stable capacity and superior cycling Coulombic efficiency. This study paves the way for the further development of NiS2-based cathodes for AIBs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Shuaishuai Xu, Yang Gao, Tao Liang, Lipeng Zhang, Bin Wang
Summary: In this study, an N, O co-doped carbon xerogel-based electrocatalyst (NO-CX) was prepared by a simple and economical method. The NO-CX catalyst exhibited high H2O2 selectivity and production rate within a specific potential range. Density functional theory calculations revealed the coupling effect of N and O on catalytic activity.
CHINESE CHEMICAL LETTERS
(2022)
Article
Energy & Fuels
S. Suresh Balaji, M. Sandhiya, M. Sathish
Summary: Heteroatom doped graphene framework shows promising potential for electrochemical hybrid supercapacitor applications. P-doped graphene synthesized using sodium phosphate showed high specific capacitance and capacitance retention, with further enhancements observed after incorporation of KI with H2SO4 electrolyte. The specific energy of symmetric supercapacitor with KI/H2SO4 electrolyte was significantly higher than that with H2SO4 electrolyte.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Nanoscience & Nanotechnology
Yuhan Jin, Yaxin Cui, Jianing Xue, Jinlong Ke, Jiaofeng Yang, Ying Zeng, Yuxuan Gong, Hongliang Dong, Peng Gao
Summary: This study proposes a Co/Zn-mediated strategy to optimize the electronic/micro structures of VO2(B) and achieve enhanced Na+ storage. The introduction of Co ions effectively promotes ion diffusion, charge transfer, and provides multiple redox-active sites, while the effects of Zn dopants result from the synergistic effect between electronic and microstructure variations of VO2(B).
MATERIALS TODAY NANO
(2023)
Review
Pharmacology & Pharmacy
Lynn Louis, Bor Shin Chee, Marion McAfee, Michael Nugent
Summary: To date, GBM remains highly resistant to therapies that have shown promising effects in other cancers. Therefore, the aim is to develop intelligent biomaterials using electrospun nanofibres encapsulated with either a drug or gene to overcome the limitations of conventional therapy. This review article focuses on the different types of electrospinning techniques in biomedical applications and discusses the challenges and future perspectives associated with GBM therapy.
Article
Multidisciplinary Sciences
Jing Sun, Haoran Jiang, Chen Zhao, Xinzhuang Fan, Christopher Chao, Tianshou Zhao
Summary: A novel ZIF-8-assisted etching approach was proposed to fabricate electrodes with large specific surface area and high permeability for redox flow batteries. The prepared electrodes showed higher energy efficiency and peak power density in a vanadium redox flow battery compared to conventional carbon electrodes.
Article
Chemistry, Applied
Ruihan Zhang, Maochun Wu, Xinzhuang Fan, Haoran Jiang, Tianshou Zhao
Summary: By utilizing yolk-shell zinc oxide as a host for Li-S batteries, the issue of lithium polysulfide shuttle effect in lithium-sulfur batteries has been successfully addressed, significantly improving the performance of the batteries.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Electrochemistry
Minghua Jing, Xiaochen Qi, Xinyu An, Xiaoxue Ma, Dawei Fang, Xinzhuang Fan, Jianguo Liu, Chuanwei Yan
Summary: The study focuses on improving the mass transfer property of carbon nanofibers electrode by constructing a novel binary carbon nanofibers electrode with starch-based carbon microspheres. The new electrode shows improved structural looseness, hydrophilicity, and oxygen content, resulting in enhanced electrochemical reaction area and mass transfer kinetics.
ELECTROCHIMICA ACTA
(2021)
Article
Electrochemistry
Minghua Jing, Yuxuan Yang, Zhuling Liu, Xiaoxue Ma, Dawei Fang, Xinzhuang Fan, Jianguo Liu, Chuanwei Yan
Summary: The electrochemical performance of ECNFs electrode for VRFB is significantly enhanced by introducing urea and subsequent thermal treatment, leading to the formation of N, O dual-doped carbon nanofibers with multiscale pores. These electrodes exhibit larger surface area, better wettability and improved electroactive sites, reducing charge transfer resistance and diffusion resistance for vanadium ions redox reactions. The VRFB equipped with these novel carbon nanofibers electrode shows increased discharge capacity and energy efficiency, paving the way for regulating internal microstructure and composition of electrodes in various energy storage systems.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Thermodynamics
L. Wei, Z. X. Guo, J. Sun, X. Z. Fan, M. C. Wu, J. B. Xu, T. S. Zhao
Summary: The study introduces and fabricates a convection-enhanced flow field for vanadium redox flow batteries, leading to significant performance improvements by inducing higher pressure differences between adjacent flow channels over the entire electrode surface. Numerical modelling demonstrates that the enhanced performance is attributed to a more uniform in-plane distribution of reactants and current in the new flow field.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Physical
Xiao Kong, Jun Xiao, Aitao Chen, Long Chen, Chao Li, Liu Feng, Xiaoli Ren, Xinzhuang Fan, Wuzhu Sun, Zhongti Sun
Summary: This study confirmed that surface oxidation is a key factor inhibiting the activity of ruthenium catalysts, and developed a Ru-Pd catalyst containing small amounts of Pd to eliminate surface oxide layers, showing superior catalytic activity in denitrification.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
J. Sun, M. C. Wu, X. Z. Fan, Y. H. Wan, C. Y. H. Chao, T. S. Zhao
Summary: A novel electrode structure combining microscale carbon fibers and porous carbon nanofibers was developed for vanadium redox flow batteries, resulting in significantly improved energy efficiency and power density. The interweaving of porous carbon nanofibers between aligned microfibers effectively addressed the contradiction between permeability and surface area in traditional electrodes, opening new possibilities for high-performance electrodes in flow batteries.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Zhenyu Wang, Jiayou Ren, Jing Sun, Zixiao Guo, Lei Wei, Xinzhuang Fan, Tianshou Zhao
Summary: Conventionally, electrodes for VRFBs are characterized in lab-scale single cells. However, the performance of these electrodes may not be optimal in practical large-scale battery stacks due to different flow rates and electrode compression ratios. This study explores the impact of flow rates and electrode compression ratios on electrode selection for VRFBs and finds that working condition-induced performance reversal leads to different optimal electrode results between large-scale battery stacks and lab-scale single cells. Considering the working conditions, especially under low flow rates and compression ratios, is important for evaluating electrodes in lab-scale single cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Zhenyu Wang, Jiayou Ren, Yuhan Wan, Xinzhuang Fan, Tianshou Zhao
Summary: PBI-based membranes with high proton conductivity and ion selectivity are prepared using a secondary phosphoric acid-doping method, making them a promising candidate for vanadium redox flow batteries.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Thermodynamics
Zixiao Guo, Jing Sun, Zhenyu Wang, Xinzhuang Fan, Tianshou Zhao
Summary: Flow fields greatly affect the performance and pumping consumption of flow batteries. This study developed a three-dimensional model to optimize the interdigitated flow field for high-performance flow batteries. The results show that large aspect ratios and small channel fractions improve battery performance, but excessively large aspect ratios lead to uneven distribution of reactants. Considering both electrochemical loss and pumping consumption, flow fields with unit widths from 1.5 to 2.5 mm and channel fractions from 0.125 to 0.375 achieve the lowest total power loss.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Electrochemistry
Jiayou Ren, Zhenyu Wang, Bin Liu, Qianli Yue, Xinzhuang Fan, Tianshou Zhao
Summary: This study investigates the effects of temperature on the performance of stack-scale vanadium redox flow batteries (VRFBs). It is found that temperature has a greater impact on the discharge capacity than on the energy efficiency. The enhancement effect of temperature on energy efficiency decreases with increasing flow rate, while it increases with the operating current density. An optimum operating condition is identified at a critical flow rate (2.88 ml min(-1) cm(-2)) and 40 degrees C for high system efficiency.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zhenyu Wang, Zixiao Guo, Jiayou Ren, Yiju Li, Bin Liu, Xinzhuang Fan, Tianshou Zhao
Summary: Researchers have developed an efficient valence regulation strategy to suppress the capacity decay in vanadium redox flow batteries by adjusting the average valence of vanadium in the electrolyte. The accumulated discharge capacity after 400 cycles was improved by 52.33%. This method is easy to scale up and provides insights into the capacity decay mechanism of VRFBs.
ACS CENTRAL SCIENCE
(2023)
Article
Chemistry, Physical
Zixiao Guo, Jiayou Ren, Jing Sun, Bin Liu, Xinzhuang Fan, Tianshou Zhao
Summary: This study proposes a bifurcate interdigitated flow field that can uniformly distribute electrolytes and reduce the pumping work in high-performance redox flow batteries. The application of this flow field to a vanadium redox flow battery increases the pump-based voltage efficiency and reduces pressure drop compared to conventional designs.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Jiayou Ren, Zhenyu Wang, Jing Sun, Zixiao Guo, Bin Liu, Xinzhuang Fan, Tianshou Zhao
Summary: In this study, a new in-situ electrodeposition strategy of bismuth was developed to achieve uniform and dense deposition of bismuth nanoparticles onto graphite fibers of a scale-up anode. Compared with conventional methods, this strategy prevented the oxidation of bismuth nanoparticles by vanadium ions, resulting in higher energy efficiency and stable operation of vanadium redox flow batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Y. H. Wan, J. Sun, Q. P. Jian, X. Z. Fan, T. S. Zhao
Summary: A composite membrane consisting of electrospun Nafion nanofibers and a PBI matrix is demonstrated, which exhibits high proton conductivity, excellent ion selectivity, and superior mechanical stability for aqueous redox flow batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
