Article
Chemistry, Multidisciplinary
Hui Qi, Chenxu Zhao, Jianfeng Huang, Chaozheng He, Lin Tang, Wen Deng
Summary: A novel nitrogen-doped carbon-coated FeCN2 network was designed and synthesized in this study, exhibiting excellent rate performance and high initial coulombic efficiency as an anode for sodium ion batteries.
Article
Chemistry, Physical
Mao Qian, Yakun Tang, Lang Liu, Yang Gao, Xiaohui Li
Summary: Cubic spinel Li4Ti5O12 is a desired anode material for lithium-ion batteries due to high stability and good safety, while Li2CoTi3O8 with added cobalt shows enhanced performance as both anode material for LIBs and sulfur host material for LSBs. The nanoparticles of Li2CoTi3O8 exhibit improved specific capacity and rate capability for LIBs, as well as stable capacity retention for LSBs, making it a promising material for advanced energy storage systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Multidisciplinary
Chen-Xi Bi, Meng Zhao, Li-Peng Hou, Zi-Xian Chen, Xue-Qiang Zhang, Bo-Quan Li, Hong Yuan, Jia-Qi Huang
Summary: This study evaluates the potential and feasibility of using lithium metal or lithium-based alloys as anode materials to construct high-energy-density Li-S batteries, and proposes a quantitative analysis method. Through research on highly lithiated lithium-magnesium (Li-Mg) alloy, it is found that it can achieve high energy density Li-S batteries, providing a new approach to realize long-cycling high-energy-density Li-S batteries.
Article
Energy & Fuels
Shichang Ma, Bingxiang Sun, Xiaojia Su, Weige Zhang, Haijun Ruan
Summary: The design of optimized charging strategies based on electrochemical models is crucial for the broader use of electric vehicles. Lithium plating on the anode surface, which is closely related to charging lifetime and battery safety, should not be ignored in charging strategy design. By using electrochemical models in combination with the lithium plating criterion, the maximum charging current that prevents lithium plating can be identified, facilitating accurate determination of model parameters. However, most current studies have not considered the influence of electrochemical parameters on characterizing variables for the lithium plating criterion. To improve the accuracy of the electrochemical model for the lithium plating reaction, a sensitivity analysis of different parameters was carried out, and the effect of temperature was also investigated.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Crystallography
Mohamed Kamel, Abanoub R. N. Hanna, Cornelius Krellner, Ruediger Klingeler, Mohamed Abdellah, Mahmoud Abdel-Hafiez, Arafa Hassen, Ahmed S. G. Khalil, Tarob Abdel-Baset, Abdelwahab Hassan
Summary: In the research and development of effective cathode materials for lithium-ion batteries, lithium-containing materials such as Li-excess disordered rocksalt Li1.3Nb0.3Mn0.4O2 (LNMO) have attracted attention for their promising structure, optical, magnetic, and thermodynamic properties. Detailed studies have shown long-range antiferromagnetic order in LNMO, with an effective magnetic moment of 3.60 mu B. Moreover, the charge carrier dynamics and electron-phonon coupling in LNMO were investigated, providing valuable insight into the material's behavior.
Article
Chemistry, Physical
Deobrat Singh, Rajeev Ahuja
Summary: The experimentally synthesized polypeptoid nanosheet crystal structure has brought significant advances in soft material imaging and designing biomimetic nanomaterials. By investigating the electronic structure and charge-transfer mechanism of the polypeptoid material, it was found that the material can effectively suppress the shuttle effect of LiPSs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
M. A. A. Mohamed, L. Singer, H. Hahn, D. Djendjur, A. Oezkara, E. Thauer, I. G. Gonzalez-Martinez, M. Hantusch, B. Buechner, S. Hampel, R. Klingeler, N. Graessler
Summary: In this study, an antiperovskite (Li2Fe)SeO material was synthesized using a one-step solid-state method. The material showed excellent thermal stability and high cycling performance, making it a promising cathode material for lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Seong-Ju Sim, Seung-Hwan Lee, Bong-Soo Jin, Hyun-Soo Kim
Summary: Introducing a lithium tungsten oxide coating layer can improve the cycle stability and rate capability of the Ni-rich layered LiNi0.90Co0.05Mn0.05O2 cathode material. The LWO layer acts as a protective layer between the electrolyte and the active material, enhancing surface stability and rate capability.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Daniel Uxa, Helen J. Holmes, Kevin Meyer, Lars Doerrer, Harald Schmidt
Summary: The LiNi0.33Mn0.33Co0.33O2 compound is an important cathode material for Li-ion batteries, and this study found that lithium diffusion can be analyzed using stable Li-6 tracers combined with SIMS analysis. The research results indicate that lithium diffuses via structural vacancies, with the concentration of which is fixed by Li deficiency.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Chenkun Li, Yao Xiao, Xiaosong Zhang, Hongwei Cheng, Ya-Jun Cheng, Yonggao Xia
Summary: This study presents a practical method to address the irreversible capacity loss of lithium-ion batteries during initial cycling by utilizing a Li2CO3/carbon nanocomposite as a lithium replenishment material. The nanocomposite, synthesized through high-speed ball-milling, exhibits high specific capacity and capacity retention in the initial charging cycle. By incorporating the nanocomposite in full-cells, the capacity and cycling life of the batteries are significantly improved.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Materials Science, Ceramics
Z. Nezamzadeh Ezhyeh, M. Khodaei, F. Torabi
Summary: Lithium-Ion Batteries (LIBs) are crucial for saving oil and reducing exhaust emissions in applications such as electric vehicles and electronic devices. Lithium titanate (LTO) is a promising anode material with reversible Li-ion extraction and low volume change during Li transmission. However, LTO has limitations that can be improved through doping. This report reviews the doping of LTO with various dopants and different fabrication methods.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Tuoya Naren, Ruheng Jiang, Piao Qing, Shaozhen Huang, Canhui Ling, Jialin Lin, Weifeng Wei, Xiaobo Ji, Yuejiao Chen, Qichun Zhang, Gui-Chao Kuang, Libao Chen
Summary: This study designs a lithium metal battery combining agraphene oxide-poly(ethylene oxide) functionalized polypropylene separator and lithium-boron anode to solve the problems of dendrite growth, interfacial reactions, and volume change. The results show that the battery exhibits good ionic conductivity, electrolyte uptake, and high electrochemical stability. The synergistic effect of the functionalized separator and lithium-boron anode provides a direction for the development of high-performance lithium metal batteries.
Review
Energy & Fuels
Susmi Anna Thomas, Mohan Reddy Pallavolu, Mohammad Ehtisham Khan, Jayesh Cherusseri
Summary: Two-dimensional graphitic carbon nitride (g-C3N4) is similar to graphene and has attracted great interest in electrochemical energy storage. It has unique features such as nitrogen-rich environment, abundant resources, good electronic conductivity, excellent physicochemical stability, fascinating electrochemical stability, and environmental friendliness, making it a promising electrode candidate for high-performance rechargeable batteries. The 2D g-C3N4 electrodes exhibit excellent electrochemical performance in terms of high capacity, high energy density, and long cycle life, which are beneficial for metal-ion batteries. In addition, the large surface area, porous architecture, and thin-layer structural features of these materials are favorable for high performance in metal air batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Zhenbang Li, Fei Tian, Yan Li, Danni Lei, Chengxin Wang
Summary: This study investigates LiAl5O8 nanowires as an insertion anode material for lithium-ion batteries, with high theoretical capacity and Li-ion diffusion coefficient. However, the poor electronic conductivity of LiAl5O8 limits its capacity and rate performance. To address this, a compact LiAl5O8 and carbon composite is synthesized, resulting in improved reversible capacity and cycling stability.
Article
Chemistry, Physical
Hee Jae Kim, Jae Hyeon Jo, Ji Ung Choi, Natalia Voronina, Docheon Ahn, Tae-Yeol Jeon, Hitoshi Yashiro, Yauhen Aniskevich, Genady Ragoisha, Eugene Streltsov, Seung-Taek Myung
Summary: Carbon-modified Li4Ti5O12 spinel successfully stores potassium and exhibits excellent electrode performance, including high initial charge capacity, cycling stability, and high-rate capability.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Thomas Lainer, Deepak Dange, Michael Pillinger, Roland C. Fischer, Anne-Marie Kelterer, Cameron Jones, Michael Haas
Summary: A convenient metal-free approach towards an N-heterocyclic carbene (NHC)-coordinated disilene 2 was successfully developed and characterized. The reaction mechanism and dimerization process were investigated using density functional theory (DFT) calculations. The reactivity of compound 2 with transition metal carbonyl compounds was also examined.
Article
Chemistry, Analytical
Matthias Flatscher, Markus Neumayer, Thomas Bretterklieber, Hannes Wegleiter
Summary: This paper investigates the dielectric sensing based on capacitive measurement technology, which is widely used in various industries and applications. However, under harsh operating conditions, the sensor and the receiver circuit need to be separated and connected by cables. The study analyzes the operating behavior and noise characteristics of different measurement circuits with different cable lengths and measuring frequencies, providing a basis for future developments.
Article
Chemistry, Analytical
Alexander Siegl, Stefan Leithner, Bernhard Schweighofer, Hannes Wegleiter
Summary: Acoustic/ultrasonic testing is commonly used in nondestructive testing to detect material defects or monitor mechanical changes in structures. This paper presents an alternative to piezoelectric transducers, the electromagnetic acoustic transducer (EMAT), which meets the requirements of limited sensor size and low-frequency excitation. Experimental and simulation studies demonstrate the ability of the EMAT to excite the mechanical resonances in a stationary ring.
Article
Energy & Fuels
Bernhard Schweighofer, Armin Buchroithner, Richard Felsberger, Hannes Wegleiter
Summary: Photovoltaic (PV) systems combined with energy storage offer advantages such as increased self-sufficiency and improved grid stability. However, factors such as location, subsidies, energy tariffs, and component size significantly influence system performance. This paper aims to provide insight into component modeling and parameterization for PV modules, battery storage, and inverters, as well as suggestions for control strategies.
Article
Biochemistry & Molecular Biology
Salah S. Massoud, Febee R. Louka, Madison T. Dial, Nahed N. M. H. Salem, Roland C. Fischer, Ana Torvisco, Franz A. Mautner, Kai Nakashima, Makoto Handa, Masahiro Mikuriya
Summary: Three new tripod tetradentate phenolate-amines were synthesized and characterized, along with seven related published ligands. Various complexes with different structures were synthesized using these ligands and their molecular structures were determined. The magnetic susceptibility study revealed different antiferromagnetic coupling strengths in the complexes.
Article
Engineering, Chemical
Thomas Suppan, Markus Neumayer, Thomas Bretterklieber, Stefan Puttinger, Christoph Feilmayr, Stefan Schuster, Hannes Wegleiter
Summary: Pneumatic conveying is a widely used technique for powder transportation, with dense phase conveying being the preferred operating condition. This study analyzes the capabilities of electrical capacitance tomography (ECT) for estimating slug flow parameters. Laboratory experiments demonstrate the estimation of flow parameters, including mass concentration distributions and particle velocity fields, which are vital for potential mass flow metering. These estimation techniques are also applied to signals from an ECT system in an industrial pneumatic conveyor. The results highlight the capabilities of ECT for flow analyses, providing valuable insights into flow mechanisms and future developments of flow meters for dense phase flow processes.
Article
Nanoscience & Nanotechnology
Matthias Mueller, Manfred Drusgala, Roland C. Fischer, Ana Torvisco, Wolfgang Kern, Michael Haas, Christine Bandl
Summary: Since the past few decades, surface-initiated photopolymerization techniques have gained increasing interest. Coupling of photoinitiators to surfaces and particles has become an important research topic in material and surface sciences. Covalent coupling of photoinitiators and subsequent photopolymerizations provide a wide range of surface properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Bettina Schlemmer, Aileen Sauermoser, Sarah Holler, Elena Zuccala, Birgit Ehmann, Matiss Reinfelds, Roland C. Fischer, Heinz Amenitsch, Jose M. Marin-Beloqui, Lucie Ludvikova, Tomas Slanina, Michael Haas, Thomas Rath, Gregor Trimmel
Summary: Organic solar cells have been developed for several decades, and the use of fused-ring non-fullerene electron acceptors has been a major advancement. However, they are limited by complex synthesis and stability issues. In contrast, perylene-based non-fullerene acceptors can be prepared easily and exhibit good stability. In this study, four monomeric perylene diimide acceptors were synthesized in three steps, and their performance in solar cells was evaluated. The introduction of germanium atoms improved the crystallinity and charge carrier mobility, resulting in a high power conversion efficiency of 5.38%.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Doris M. M. Grossl, Anna-Viktoria Hafner, Roland C. C. Fischer, Robert Saf, Ana Torvisco, Frank Uhlig
Summary: The solubility behavior of para-substituted meso-tetraarylporphyrins (H, Me, t-Bu, n-Bu) and meso-tetraalkylporphyrins (Me, n-Pr, n-Bu) was investigated. It was found that the solubility in chloroform and benzene increased with higher functionality in the para position of the phenyl ring for meso-tetraarylporphyrins or in the meso position for meso-tetraalkylporphyrins. Additionally, the series of bis(chlorido)tin(IV) meso-tetraarylporphyrin and bis(chlorido)tin(IV) meso-tetraalkylporphyrin was studied using UV/Vis spectroscopy, Sn-119-NMR, and single crystal X-ray diffraction.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Aileen Sauermoser, Thomas Lainer, Andreas Knoechl, Freskida Goni, Roland C. Fischer, Harald Fitzek, Martina Dienstleder, Christine Prietl, Anne-Marie Kelterer, Christine Bandl, Georg Jakopic, Gerald Kothleitner, Michael Haas
Summary: The aim of this study was to prepare amorphous silicon-carbon hybrid thin-layer materials using liquid phase deposition (LPD) process and single-source precursors. Different precursor materials were used, and the carbon content and bandgap of the thin films were successfully controlled. The results show the potential of LPD for tuning the properties of silicon-carbon materials.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Alexandra Haidinger, Christina I. Dilly, Roland C. Fischer, Dennis Svatunek, Johanna M. Uher, Johann A. Hlina
Summary: A series of metal complexes containing both rare-earth and silver metals were synthesized and characterized. Their physical and chemical properties were investigated through various spectroscopic and computational methods.
INORGANIC CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Thomas Suppan, Markus Neumayer, Thomas Bretterklieber, Christoph Feilmayr, Stefan Schuster, Hannes Wegleiter
Summary: In powder processing industries, mass concentration and moisture content information is crucial for process monitoring and control. Capacitive sensors are commonly used for powder measurements due to their sensitivity to mass concentration and moisture content variations. However, differentiating between these effects solely based on capacitive measurements is not possible when both mass concentration and moisture content can vary. This letter demonstrates a method using permittivity and conductivity measurements to independently determine mass concentration and moisture content of powders. The proposed approach is exemplified using coal powder and involves dielectric characterization based on impedance measurements of a coaxial probe. Such independent determination of mass concentration and moisture content is of great importance for developing measurement systems in powder processing industries.
IEEE SENSORS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Alexander Siegl, Bernhard Schweighofer, Hannes Wegleiter
Summary: The demand for monitoring lithium-ion battery cells is increasing due to the growing number of cells used in various applications. A novel approach based on the battery's mechanical properties and the acoustic wave generated inside the battery is presented. By understanding how the wave forms and travels through the layers, a model is developed to simulate the generation and propagation of the wave within the battery.
IEEE SENSORS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Franz A. A. Mautner, Roland C. C. Fischer, Ana Torvisco, Kai Nakashima, Makoto Handa, Masahiro Mikuriya, Nahed M. H. Salem, Gabriel J. J. Overby, Madison R. R. Maier, Febee R. R. Louka, Salah S. S. Massoud
Summary: Novel bridged acetato dinuclear complexes were synthesized and characterized. These complexes exhibited different magnetic properties.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Bettina Schlemmer, Aileen Sauermoser, Sarah Holler, Elena Zuccala, Birgit Ehmann, Matiss Reinfelds, Roland C. Fischer, Heinz Amenitsch, Jose M. Marin-Beloqui, Lucie Ludvikova, Tomas Slanina, Michael Haas, Thomas Rath, Gregor Trimmel
Summary: By introducing semimetal silicon and germanium, four monomeric perylene diimide acceptors were prepared in the bay position of the molecules, which exhibited high crystallinity and good optoelectronic properties, leading to a high power conversion efficiency in the blend with the conjugated polymer PM6.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
