Article
Chemistry, Multidisciplinary
Q. Chen, H. Li, Z. Q. Wu, L. L. Zhu, C. D. Li, X. B. Zhu, Y. P. Sun
Summary: A simple one-step magneto-solvothermal method is developed to prepare three-dimensional porous network nickel cobalt sulfide (NiCo2S4) as electrodes for supercapacitors, resulting in excellent electro-chemical performance. NiCo2S4 electrodes exhibit high specific capacitance (605.8 C/g at 1 A/g) and excellent rate capability (80% remained capacitance after 3000 charge-discharge cycles at a current density of 10 A/g) by modulating the microscopic morphology with magnetic fields, which increases the exposure of the active sites significantly. Moreover, hybrid supercapacitors fabricated by NiCo2S4 prepared under a magnetic field of 3 T as the positive electrode and carbon electrode (activated carbon) as the negative electrode demonstrate a high energy density of 22.65 Wh/kg at the power density of 750.14 W/kg and excellent cycling stability. This work provides a novel route to improve the electrochemical performances of NiCo2S4 using the magneto-solvothermal method.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Peng Sheng, Rongrong Ye, Dajun Wu, Lei Zhang, Xuee An, Shi Tao, Bin Qian, Paul K. Chu
Summary: Transition metal selenides, specifically cobalt nickel selenides, have shown promising potential as electrode materials in supercapacitors due to their good electron conductivity and high theoretical specific capacity. By modulating the morphology and enhancing the electrochemical properties through nickel doping, Co0.8Ni0.2Se2 electrodes exhibit high specific capacitance and good cycling stability. The assembled asymmetrical supercapacitor demonstrated a capacity of 120 mF cm-2 after 8000 cycles at a current density of 1 mA cm-2, with superior power density of 3.75 mW cm-2 and energy density of 0.052 mWh cm-2, highlighting the practicality and high potential of Co0.8Ni0.2Se2 as electrode materials in supercapacitors.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Applied
Bruna Pes Nicola, Anderson Joel Schwanke, Katia Bernardo-Gusmao
Summary: In this study, porous clay nanostructures with different structures were synthesized as catalytic supports. By anchoring organometallic complexes to these materials, reusable heterogenized catalysts were obtained. The heterogenization of the materials was found to affect the thermal stability of the catalyst and the selectivity of the products, and different material structures also had a noticeable influence on the catalytic activity.
Article
Chemistry, Analytical
Manaswini Ravipati, Anjali Sreekumar, Sushmee Badhulika
Summary: In this study, a bimetallic Ni/Co-MOF based electrochemical sensor was developed for the detection of IgG antibodies in human blood serum. The sensor exhibited high selectivity, sensitivity, and a wide dynamic range. Additionally, the addition of Ni2+ enhanced the electrochemical properties of the material.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Physical
Yan Cao, Abdeliazim Mustafa Mohamed, Mehdi Abdollahzadeh, Isabelle Huynen
Summary: This study focuses on the design and synthesis of microwave absorbers based on CoNi-BTC and reduced graphene oxide, resulting in P@CN/G nanocomposites. Through various characterizations, the morphology of nanoparticles and the presence of magnetic Co and Ni nanoparticles were confirmed, leading to the determination of optimal sample parameters for performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Tim Glasel, Benedikt N. Baumann, Marko Hapke
Summary: Cobalt complexes serve as catalysts in cycloaddition reactions, playing a crucial role in synthetic chemistry. By modifying precatalysts and developing novel cobalt catalysts, the conversion of new substrates and reaction modes can be achieved.
Article
Chemistry, Physical
Alvin Jonathan, Nathaniel M. Eagan, David L. Bruns, Shannon S. Stahl, Michael P. Lanci, James A. Dumesic, George W. Huber
Summary: A stable cobalt oxide on carbon catalyst can selectively produce C-4-C-12 linear olefins, including linear alpha olefins, from ethylene. The product selectivity is influenced by the formation of polyethylene in the catalyst pores. The catalyst exhibits higher stability at higher temperatures and rapid deactivation at lower temperatures, likely due to reduction of Co3O4 to CoO.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Akira Saito, Shinya Adachi, Naoya Kumagai, Masakatsu Shibasaki
Summary: The strategic use of a sterically demanding Ni-II pincer carbene complex has enabled high enantioselectivity in the direct catalytic asymmetric addition of acetonitrile to aldehydes, resulting in highly enantioenriched beta-hydroxynitriles. This highly atom-economical process offers a promising pathway for utilizing inexpensive acetonitrile as a C2 building block in practical synthetic toolbox for asymmetric catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Yawei Yu, Mengqin Pan, Zheng Zhang, Ziqi An, Yi Wang, Xiulan Hu
Summary: In this study, nickel-cobalt hydroxide nitrate nanosheets arrays were coated on CuO nanowires using a simple solvothermal reaction without any alkali sources and additional oxidants. The three-dimensional core-shell nanowire arrays and the synergistic combination of Ni2+ and Co2+/Co3+ resulted in a large specific capacity of 3.76 mAh cm-2 (43.2 F cm-2) under 11.6 mg cm-2. At a power density of 0.754 kW kg-1, the energy density of the fabricated nickel-zinc battery can reach 530.1 Wh kg-1, indicating excellent alkaline energy storage performance.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Adrian Martinez Gomez-Aldaravi, Cecilia Paris, Manuel Moliner, Cristina Martinez
Summary: Diverse Ni-zeolites with different physico-chemical properties and Ni speciation have been designed to study their influence on ethylene oligomerization. Different particle sizes, Si/Al ratios, and Ni-incorporation strategies have been used to synthesize Ni-containing medium-pore MFI and large-pore BEA zeolites. Ni2+ and NiO nanoclusters are found inside the zeolitic pores, depending on the incorporation method. The presence of Ni2+ mainly determines olefin oligomerization under near-ambient pressures, while crystal size, acidity, and Ni incorporation methodology play key roles under high-pressure reaction conditions.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Timon Schoenauer, Sabrina L. J. Thomae, Leah Kaiser, Mirijam Zobel, Rhett Kempe
Summary: The development of C-N bond formation reactions is crucial in biology and chemistry, with recent progress in 3d metal catalysis showing unique selectivity patterns. By using a novel cobalt catalyst, a catalytic C-N bond formation reaction was successfully reported, utilizing abundant and low-cost starting materials for reductive alkylation.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Tristan Delcaillau, Philip Boehm, Bill Morandi
Summary: A new functional group metathesis reaction between aryl nitrites and aryl thioethers has been described, utilizing a catalytic system of nickel/dcype to achieve fully reversible transformation in good to excellent yields. This cyanide- and thiol-free reaction demonstrates high functional group tolerance and efficiency for late-stage derivatization of commercial molecules, with synthetic applications showcasing its versatility and utility in multistep synthesis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Eric S. S. Yang, Daniel W. N. Wilson, Jose M. M. Goicoechea
Summary: The cyaphide anion, CP-, can undergo three different oligomerization reactions in the coordination sphere of metals. These reactions result in the formation of tetra-metallic, asymmetric bimetallic, and trimetallic complexes containing various phosphorus-containing fragments. The study highlights the instability of cyaphido transition metal complexes towards further oligomerization processes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Organic
Guofu Zhang, Huihui Miao, Chenfei Guan, Chengrong Ding
Summary: The direct transformation of aryl carboxylic acids to aryl nitriles has been achieved through palladium-catalyzed decarbonylative cyanation without the use of a base. Successful analysis of the decarbonylative cyanation of drug molecules and gram-scale reactions validates the practicality and operability of this method.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Zhongchun Li, Jialun Yu, Chong Shi, Hao Su, Lu Bai, Limi Yan
Summary: Hierarchical nickel hydroxide (HNHH) with large specific surface area and rich mesopores was synthesized through a solvothermal strategy. The HNHH-120 electrode exhibited a specific capacity of 718.0 C g-1 at 0.5 A g-1, and the HNHH-120//activated carbon hybrid supercapacitor achieved a specific capacitance of 95.0 F g-1 at the same current density. The excellent energy storage performance of HNHH-120 is attributed to its unique structural characteristics. Evaluation: 8/10.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
F. Dannenberg, G. Thiele, E. Dornsiepen, S. Dehnen, M. Mehring
NEW JOURNAL OF CHEMISTRY
(2017)
Article
Chemistry, Inorganic & Nuclear
Guenther Thiele, Philipp Bron, Sina Lippert, Frederik Nietschke, Oliver Oeckler, Martin Koch, Bernhard Roling, Stefanie Dehnen
INORGANIC CHEMISTRY
(2019)
Article
Chemistry, Inorganic & Nuclear
Marcus Weber, Guenther Thiele, Eike Dornsiepen, Dominik P. Weimann, Christoph A. Schalley, Stefanie Dehnen, Michael Mehring
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2018)
Article
Chemistry, Multidisciplinary
Sebastian Haemmerling, Guenther Thiele, Simon Steinhauer, Helmut Beckers, Carsten Mueller, Sebastian Riedel
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Physical
Hongmin Li, Helmut Beckers, Lin Li, Guenther Thiele, Tony Stueker, Sebastian Riedel
CHEMICAL PHYSICS LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Jonas R. Schmid, Moritz J. Ernst, Guenther Thiele
JOURNAL OF CHEMICAL EDUCATION
(2020)
Article
Chemistry, Inorganic & Nuclear
Tim Kuellmey, Mohammad R. Ghazanfari, Robert Burda, Elena Voloshina, Clara A. von Randow, Friederike Fuss, Moritz Liesegang, Beate Paulus, Ann-Christin Poeppler, Guenther Thiele
Summary: Anionic lithium-containing species known as inolithates, comprising [LiCl2](-) and [Li2Cl3](-) polyanions, have been isolated for the first time from ionothermal reactions. These compounds are of interest for potential applications in electrochemical lithium-based systems and are considered intermediates in ionic liquid applications. The structures and formation mechanism of inolithates are discussed in depth, highlighting the absence of covalent bonding in the anionic moieties.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Friederike Fuss, Max Rieckert, Simon Steinhauer, Moritz Liesegang, Guenther Thiele
Summary: This article introduces an alternative storage method for separating sample preparation from single-crystal and powder X-ray diffraction measurements at home source diffractometers. A setup for storing preselected crystals under cryogenic and ambient temperatures is presented for single crystals, while a disposable sample holder is introduced for powders. This method is suitable for storing air- and moisture-sensitive samples. The equipment is made of biodegradable polylactic acid produced by 3D printing, and can be customized according to individual needs. Models of the equipment are provided for easy reproduction.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Multidisciplinary
Alberto Perez-Bitrian, Kurt F. Hoffmann, Konstantin B. Krause, Guenther Thiele, Christian Limberg, Sebastian Riedel
Summary: In this study, nickel pentafluoroorthotellurate complexes were successfully synthesized and their electronic properties and ligand-field behavior were investigated. The complexes exhibited stable structures and showed reactivity towards substitution reactions with other ligands, resulting in different coordination geometries.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Mohammad R. Ghazanfari, Archa Santhosh, Konrad Siemensmeyer, Friederike Fuss, Lennart Staab, Johannes C. Vrijmoed, Bertram Peters, Moritz Liesegang, Stefanie Dehnen, Oliver Oeckler, Paul Jerabek, Guenther Thiele
Summary: The multigram synthesis of K-2[Fe3S4] from K2S and FeS is investigated, and its electronic and magnetic properties are studied. The compound exhibits high dielectric constant and exceptional ionic conductivity, as well as Mott insulating behavior and temperature-dependent exchange bias fields. The results demonstrate the critical role of iron vacancies in tuning the material's properties.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Crystallography
Friederike Fuss, Guenther Thiele
Summary: This article reports the crystal structure and features of octaselenidotetraferrate(II/III) synthesized using six lithium atoms as counter-ions at room temperature.
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Mohammad R. Ghazanfari, Konrad Siemensmeyer, Archa Santhosh, Johannes C. Vrijmoed, Mirko Tallu, Stefanie Dehnen, Paul Jerabek, Gunther Thiele
Summary: The article introduces a Na-2[Fe3S4] material synthesized from sodium and iron sulfides, which exhibits high dielectric constants and electrical conductivity, as well as potential applications in optics and magnetism.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Mohammad R. Ghazanfari, Archa Santhosh, Johannes C. Vrijmoed, Konrad Siemensmeyer, Bertram Peters, Stefanie Dehnen, Paul Jerabek, Guenther Thiele
Summary: High yields of phase-pure K-3[Fe2S4] were obtained using a fast and efficient synthetic technique starting from binary precursors. The compound showed soft ferrimagnetic characteristics due to the mixed valence of Fe-II/Fe-III. Manipulation of microstructure and ratio of grains to grain boundaries through sintering at different temperatures allowed for variation of dielectric and impedance properties. The compound demonstrated potential as a material for electronic and magnetic applications, with high dielectric constant, ionic conductivity, and optical band gap.
Article
Chemistry, Inorganic & Nuclear
Jonas R. Schmid, Patrick Proehm, Patrick Vossnacker, Guenter Thiele, Mathias Ellwanger, Simon Steinhauer, Sebastian Riedel
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Felix Roschke, Guenther Thiele, Stefanie Dehnen, Michael Mehring
MAIN GROUP METAL CHEMISTRY
(2019)
