Article
Nanoscience & Nanotechnology
Rafael Oliveira Fleming, Sofia Goncalves, Amin Davarpanah, Iliya Radulov, Lukas Pfeuffer, Benedikt Beckmann, Konstantin Skokov, Yang Ren, Tianyi Li, John Evans, Joao Amaral, Rafael Almeida, Armandina Lopes, Goncalo Oliveira, Joao Pedro Araujo, Arlete Apolinario, Joao Horta Belo
Summary: This study demonstrates that the size and strain tuning of LaFe11.4Mn0.27Si1.29Hx alloys through ball-milling effectively broadens the temperature range of negative thermal expansion and suppresses its peak.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Xun-Lu Li, Jian Bao, Yi-Fan Li, Dong Chen, Cui Ma, Qi-Qi Qiu, Xin-Yang Yue, Qin-Chao Wang, Yong-Ning Zhou
Summary: A new strategy of introducing Mg ions into Mn-based tunnel-structured cathode materials is designed to improve the cycle stability and rate capability of sodium-ion batteries. The enhanced Na+ diffusion kinetics and lowered desodiation energy after Mg doping contribute to the improved performance. High reversible charge compensation and structure evolution are proved by synchrotron-based X-ray techniques.
Article
Chemistry, Physical
I Lee, K. Han, I Ohnuma, R. Kainuma
Summary: Phase equilibria in multi-phase Zn-Fe-Al alloys were experimentally measured to determine a precise iso-thermal phase diagram at 450 degrees C. The solubility ranges of various intermetallic compound phases on both Fe-Zn and Fe-Al sides were consistent with binary data, with the discovery of a new Fe(Al, Zn)(6) intermetallic compound phase in the Al-rich region at 450 degrees C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Lihong Zhang, Shunqing Wu, Jianwei Shuai, Zhufeng Hou, Zizhong Zhu
Summary: The study investigated the formation energies of an oxygen vacancy (V-O) in bulk Pnma-Li2FeSiO4 using first-principles calculations, indicating that fully ionizing the oxygen vacancy in Li2FeSiO4 is energetically favorable. The presence of V-O results in a distinct redistribution of electronic charge densities around Fe and Si ions adjacent to the O-vacancy site.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Yu -Long Xie, Li -Fang Guo
Summary: In this study, LiNi1/3Co1/3Mn1/3O2/Li2FeSiO4/C composite materials were successfully synthesized using the sol-gel method. The addition of carbon derived from the carbonization of citric acid improved the electronic conduction and enhanced the electrochemical performance. The LFS/C layer played a crucial role in improving electron and ion transfer and protecting against electrolyte attack.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Saul Perez Beltran, Perla B. Balbuena
Summary: This study investigated the effects of electrochemical lithiation on the mechanical integrity of sulfurized polyacrylonitrile (SPAN) through uniaxial tensile loading tests. It was found that the degree of graphitization of the carbonized skeleton affects SPAN's ability to withstand volume expansion-induced structural stresses upon lithiation, resulting in a decrease in ductility with increasing lithium contents.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Zixin Wu, Guifan Zeng, Jianhua Yin, Chao-Lung Chiang, Qinghua Zhang, Baodan Zhang, Jianken Chen, Yawen Yan, Yonglin Tang, Haitang Zhang, Shiyuan Zhou, Qingsong Wang, Xiaoxiao Kuai, Yan-Gu Lin, Lin Gu, Yu Qiao, Shi-Gang Sun
Summary: The working mechanism of LiCoO2 beyond 4.6 V presents complicated issues, including multistructural evolutions, anionic redox reactions triggered by Co-O bands, and electrode-electrolyte interface stability challenges. By combining stacking faults and nonhomogeneous delithiation, intergrowth phase evolutions from O3 to O1 are demonstrated, along with the manifestation of ARR in LiCoO2. The nature of electrolyte's role in chain decompositions and surface degradation is clarified.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yueyue He, Soeren L. Dreyer, Yin-Ying Ting, Yuan Ma, Yang Hu, Damian Goonetilleke, Yushu Tang, Thomas Diemant, Bei Zhou, Piotr M. Kowalski, Maximilian Fichtner, Horst Hahn, Jasmin Aghassi-Hagmann, Torsten Brezesinski, Ben Breitung, Yanjiao Ma
Summary: The high-entropy approach is applied to address the issue of unfavorable multilevel phase transitions in Na-ion cathodes, leading to poor stability and capacity decay. By synthesizing Mn-based samples with multiple metal species, a superior cathode material for Na-ion batteries, exhibiting high cyclability, is discovered. Computational comparisons and characterization techniques provide insights into the benefits of high-entropy structure, such as suppression of phase transitions and mitigation of gas evolution, during battery operation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Fengqi Zhang, Chris Taake, Bowei Huang, Xinmin You, Hamutu Ojiyed, Qi Shen, Iulian Dugulan, Luana Caron, Niels van Dijk, Ekkes Bruck
Summary: In this study, (Mn,Fe)(2)(P,Si)-based nanoparticles were synthesized and the influence of crystallite size and microstructure on the giant magnetocaloric effect was systematically investigated. The results showed that decreasing particle size led to decreased saturation magnetization, thermal hysteresis, and Tc. Annealing at an optimal temperature window and gaseous nitriding were found to enhance magnetization and magnetic entropy change. The results provide important insights into the performance of giant magnetocaloric materials at the nanoscale.
Review
Chemistry, Multidisciplinary
Muthu Gnana Theresa Nathan, Hakgyoon Yu, Guk-Tae Kim, Jin-Hee Kim, Jung Sang Cho, Jeha Kim, Jae-Kwang Kim
Summary: To meet future energy demands, it is necessary to find abundant and cost-effective alternatives to lithium-ion batteries. Potassium-ion batteries show promise as alternatives due to their abundance and similarities in intercalation chemistry and energy densities with lithium-ion batteries. Designing and developing efficient electrode materials is crucial for large-scale energy storage applications.
Article
Construction & Building Technology
Bowen Xu, Shilei Lu, Wei Jia, Haibing Du, Minchao Fan, Ran Wang
Summary: This paper focuses on the application of cascaded latent heat storage system for space heating, addressing the importance of charge-discharge cycle model and recommending the potential use of CLHSS instead of SLHSS under certain conditions.
ENERGY AND BUILDINGS
(2021)
Article
Chemistry, Multidisciplinary
Yong Lu, Yichao Cai, Qiu Zhang, Jun Chen
Summary: The study explores the redox processes and their correlations with the electrochemical performance of organic carbonyl electrode materials, highlighting the impacts of molecular structure evolution, crystal structure evolution, and charge storage mechanisms on battery performance. Future efforts should focus on developing more in situ or operando characterization techniques and further understanding the intrinsic relationships between redox processes and battery performance.
ADVANCED MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Yuan Chen, Yufei Zhao, Feihong Liu, Mengdie Ding, Juan Wang, Jiuxin Jiang, Pascal Boulet, Marie-Christine Record
Summary: In this study, glass materials with different compositions were prepared and characterized. It was found that increasing the content of Bi2O3 led to improved stability of the glass network. Heat treatment of the glass materials resulted in enhanced electrochemical properties. This study provides an approach for the development of new glass cathode materials for lithium-ion batteries.
Article
Energy & Fuels
Mohammad Mahdi Kalantarian, Hatef Yousefi-Mashhour, Maryam Tahertalari, Piercarlo Mustarelli
Summary: This study proposes a method for standardization and normalization parameters and procedures for evaluating the performance of intercalation cathode materials, as well as simple criteria for assessing cell performance. Despite the complex chemistry involved in Li/Na-ion cell operation, the applicability of this simple approach is supported by diffusion theory and experimental assumptions.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Nanoscience & Nanotechnology
Gan Liu, Tianyu Qiu, Kuanyu He, Yizhou Liu, Dongjing Lin, Zhen Ma, Zhentao Huang, Wenna Tang, Jie Xu, Kenji Watanabe, Takashi Taniguchi, Libo Gao, Jinsheng Wen, Jun-Ming Liu, Binghai Yan, Xiaoxiang Xi
Summary: In this study, electrical switching of ferro-rotational domain states in the charge-density-wave phases of nanometre-thick 1T-TaS2 crystals is demonstrated. Despite the lack of coupling between the electric field and the ferroic order due to symmetry mismatch, the electric field drives domain wall propagation, resulting in reversible, durable, and non-volatile isothermal state switching.
NATURE NANOTECHNOLOGY
(2023)
Article
Electrochemistry
Y. P. Wang, B. P. Hou, X. R. Cao, S. Q. Wu, Z. Z. Zhu
Summary: Prussian blue analogs Na2FeFe(CN)(6) are considered as potential cathode materials for sodium-ion batteries due to low-cost iron resources and open framework. Detailed first-principles calculations reveal a phase transition and high rate performance during Na ion extraction process.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Physics, Applied
Ruotong Zhang, Yimei Fang, Fulun Wu, Xinrui Cao, Yinghui Zhou, Zi-Zhong Zhu, Shunqing Wu
Summary: The XS2 compounds, Pnma-ZrS2 and Pnma-HfS2, are promising candidates for thin-film solar cells and nanoelectronics due to their desired direct band gaps and high visible-light absorption.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Review
Physics, Condensed Matter
Zhuo Ye, Yimei Fang, Han Zhang, Feng Zhang, Shunqing Wu, Wen-Cai Lu, Yong-Xin Yao, Cai-Zhuang Wang, Kai-Ming Ho
Summary: The article reviews recent work on the Gutzwiller conjugate gradient minimization method for correlated electron systems, outlining the formalism and discussing benchmark studies as well as efforts to reduce computational complexity further.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Yaowei Xiang, Lei Li, Yameng Li, Zi-Zhong Zhu, Shunqing Wu, Xinrui Cao
Summary: This study investigates the nitrogen reduction reaction (NRR) on 2D-Fe2C12 materials and finds that the 1s-Fe2C12 monolayer exhibits high activity and selectivity due to the cooperative interaction of adjacent Fe active sites. The results suggest that 1s-Fe2C12 has great potential for designing efficient electrocatalysts for NRR.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Condensed Matter
Zhuo Ye, Feng Zhang, Yimei Fang, Han Zhang, Shunqing Wu, Wen-Cai Lu, Yong-Xin Yao, Cai-Zhuang Wang, Kai-Ming Ho
Summary: This article introduces a rotationally invariant approach combined with the Gutzwiller conjugate gradient minimization method for studying correlated electron systems. The approach efficiently reduces computational complexity and yields faster energy calculations. Moreover, it provides more accurate results.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Fulun Wu, Feng Zheng, Weibo He, Xinrui Cao, Tie -Yu Lu, Zi-Zhong Zhu, Shunqing Wu
Summary: This study presents an interatomic potential for the Ca-O system using deep neural network method, demonstrating its accuracy in predicting forces and energies. It also shows that the potential can be used to construct the temperature-pressure phase diagram of Ca-O compounds at a lower cost compared to ab initio calculations, and explore Ca-O structures by combining with genetic algorithm.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Chemistry, Physical
Yiwei You, Feng Zheng, Dexin Zhang, Chundong Zhao, Chunhua Hu, Xinrui Cao, Zi-zhong Zhu, Shunqing Wu
Summary: In this paper, the charge density distribution of a solid-state electrolyte material in all-solid-state lithium metal batteries is investigated using density functional theory. Excess electrons on the surface of the material are found to cause uneven charge density distribution and subsequently lead to lithium dendrite formation. The use of a LiF buffer layer is shown to improve the charge density distribution near the interface layer and inhibit the growth of lithium dendrites.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Xinrui Cao, Yaowei Xiang, Shunqing Wu, Zi-Zhong Zhu, Xiao-Fei Li
Summary: In this study, a new mechanism for oxygen activation is reported, in which a catalyst injects electrons with selective spins into oxygen, resulting in a highly activated spin state. The activated oxygen can then adsorb CO molecules and oxidize them to CO2. The weak adsorption of CO and CO2 prevents catalyst poisoning and promotes catalyst regeneration. These findings enhance the understanding of the mechanistic of oxygen reduction reaction and provide insights for the design of nonmagnetic metal-free catalysts for oxygen activation.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Meijuan Cheng, Dongliang Chen, Rundong Chen, Weilong Liu, Qiubao Lin, Zizhong Zhu
Summary: This study investigates the hydrogen storage capability of alkali metals and alkali-earth metal decorated HOT graphene using first-principles calculations. The results show that the metals can strongly bond with HOT graphene and absorb a significant amount of hydrogen molecules. The double-sided adsorption of metals on HOT graphene can achieve high gravimetric H2 uptake. The analysis of electronic states and charge transfer provides insight into the bonding mechanisms between metals and HOT graphene. Ab-initio molecular dynamics simulations demonstrate the feasibility of using metal decorated HOT graphene as a reversible hydrogen storage medium with high capacity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Physics, Applied
Ruotong Zhang, Yimei Fang, Tie-Yu Lu, Xinrui Cao, Yinghui Zhou, Zi-Zhong Zhu, Shunqing Wu
Summary: In this study, (C, Mn) co-doped orthorhombic ZnO (termed (C, Mn) @Orth-ZnO) is identified as a room-temperature ferromagnetic half-metal with a magnetic moment of 3 mu (B) per Mn atom. The ferromagnetic interaction in the (C, Mn) @Orth-ZnO system is mainly attributed to the p-d exchange hybridization between C-2p and Mn-3d states. The system also exhibits a large magnetic anisotropy energy and a Curie temperature of 371 K based on mean-field approximation.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Wengeng Chen, Yaowei Xiang, Zepeng Wu, Meijie Wang, Yimei Fang, Zi-Zhong Zhu, Shunqing Wu, Xinrui Cao
Summary: In this study, the newly reported NiB monolayer with topological metal properties exhibited excellent catalytic activity and high selectivity for NO-to-NH3 conversion. The unique building blocks of Ni-B triangles and tetragons facilitated NO adsorption and activation. The optimal reduction pathway for NH3 synthesis was identified, and the hydrogen evolution reaction (HER) and partial reduction channel were found to be less competitive. These findings expand the potential application of two-dimensional topological materials in electrocatalysis.
APPLIED SURFACE SCIENCE
(2023)
Article
Physics, Applied
Zi-Zhong Zhu
Summary: Recently, Ahn et al. have created dumbbell-shaped silica nanoparticles that are optically levitated in vacuum and capable of spinning at an astounding rate of 300 billion revolutions per minute, driven solely by laser force and torque. This breakthrough represents the fastest spinning object ever recorded. Their findings also suggest that this phenomenon may extend to microscopic particles. However, further experimentation is required to fully understand the effects of angular momentum changes.
MODERN PHYSICS LETTERS B
(2023)
Article
Chemistry, Physical
Lijin Zhan, Yimei Fang, Ruotong Zhang, Xiancong Lu, Tie-yu Lu, Xinrui Cao, Zizhong Zhu, Shunqing Wu
Summary: In this study, a new topological allotrope of silicene, named tilted penta silicene, is discovered using an adaptive genetic algorithm. The geometric and electronic properties of this allotrope and its isoelectronic substitutions (Ge, Sn) are investigated. The results show that tilted penta silicene exhibits topological insulator behavior and remains stable after isoelectronic substitutions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(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)
