Article
Nanoscience & Nanotechnology
Yuexia Ling, Jiang Zhou, Shan Guo, Hongwei Fu, Yifan Zhou, Guozhao Fang, Liangbing Wang, Bingan Lu, Xinxin Cao, Shuquan Liang
Summary: Layered sodium manganese oxides are promising cathode materials for sodium-ion batteries, but the addition of copper to the structure can improve stability and cycling performance. Proper copper content in P'2 Na0.67Cu0.1Mn0.9O2 results in high specific capacity and capacity retention after cycling, providing guidelines for developing high-performance cathodes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Shan-Nan Du, Dan Su, Ze-Yu Ruan, Ying-Qian Zhou, Wei Deng, Wei-Xiong Zhang, Young Sun, Jun-Liang Liu, Ming-Liang Tong
Summary: Introducing magnetic switchability into artificial molecular machines allows for precise control of magnetism via external stimuli. A field-induced Co-II single-molecule magnet was found to exhibit reversible Jahn-Teller distortion and thermal conformational motion, leading to a single-crystal-to-single-crystal phase transition. Additionally, ON/OFF negative magnetodielectric effects were observed in the high-/low-temperature phase, indicating stronger spin-lattice interaction in the high-temperature phase.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Suyoon Eom, Su Hwan Jeong, Sang Jun Lee, Young Hwa Jung, Joo-Hyung Kim
Summary: This study proposes an effective strategy to inhibit harmful phase transition and Jahn-Teller distortion in Mn-based layered oxide cathodes for sodium-ion batteries using Al substitution. The Al-substituted electrode exhibits excellent cycling stability and higher Mn4 content compared to the bare electrode, confirming the improved electrochemical performance.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Zijing Wan, Yaxin Xu, Guoqing Sun, Dongwei Xu, Xiaobing Luo
Summary: This study investigates the impact of inversion in the cathode material LiMn2O4 (LMO) on battery capacity from the perspective of Jahn-Teller distortion and manganese dissolution. The charge orderings and magnetic moments of LMO with different inversion structures were found to be related to the battery's properties. The existence of Mn3+ induces strong Jahn-Teller distortion, leading to a decrease in battery capacity. However, the inversion phenomenon does not always have a negative effect on battery capacity, as Jahn-Teller distortion and Mn2+ dissolution compete with each other.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physics, Multidisciplinary
Wei Hu, Wen-Wei Luo, Mu-Sheng Wu, Bo Xu, Chu-Ying Ouyang
Summary: Spinel-type LiMn2O4 is a promising cathode material for rechargeable Li-ion batteries due to its thermal stability and safety. The stability of the cubic phase is greatly influenced by the configurational entropy. The predicted phase transition temperature is comparable to the experimentally observed temperature. These results are beneficial for improving the electrochemical performance of LiMn2O4 cathodes.
Article
Chemistry, Physical
Renier Arabolla Rodriguez, Nelcy Della Santina Mohallem, Manuel Avila Santos, Demetrio A. Sena Costa, Luciano Andrey Montoro, Yodalgis Mosqueda Laffita, Luis A. Tavera Carrasco, Eduardo L. Perez-Cappe
Summary: This study aimed to uncover the impact of Mn-interstitial defects and nanometric particles on Jahn Teller distortion through HRTEM, Rietveld fitting, and XRD analysis. By measuring changes in Fermi level, entropy, enthalpy, and redox potential due to JT transition, it was confirmed that Mn ions exist in distorted tetrahedral 48f positions after irradiation. Additionally, correlations between capacity in the 3V region and redox potential drop were revealed, with surface pressure and bonding effects identified as key factors in electrochemical and structural changes in nanometric particles below 15nm.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Andreas ostergaard Drejer, Mickey Sejerup Pedersen, Morten Johansen, Dorthe Bomholdt Ravnsbaek
Summary: Due to limited availability of raw materials for Li-ion batteries, it is necessary to develop Na-ion batteries with more abundant sodium raw materials. Layered transition-metal oxides show promise as electrode materials for Na-ion batteries, but suffer from poor capacity retention. This study investigates sustainable materials P2-NaxFeyMn1-yO2 to understand the structural evolution during battery charge and discharge. The effects of Fe:Mn ratio and the origin of phase transitions are elucidated through operando powder diffraction and structural analysis.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Analytical
Jeanet Conradie
Summary: A density functional theory study investigated the oxidation and reduction of bis(terpyridine)manganese(II) complexes, revealing that oxidation induces a distortion in the manganese(III) ion geometry, and reduction leads to antiferromagnetic coupling in the complex. The correlation between experimental and theoretical results may be used to predict the redox potential and reactivity of substituted complexes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Physics, Condensed Matter
Xiaoxu Bao, Juyi Wang, Xianfeng Wu, Chunyan He, Hao Luo, Qiligeer Bai, Vrhn Bao, Yulong Bai, Junjie Liu, Shifeng Zhao
Summary: This study investigates the magnetic properties and magnetocaloric effects of polycrystalline Bi0.3xLaxCa0.7MnO3 (x = 0, 0.1, 0.2) ceramics, using Raman active modes and phonons to detect charge disorder and local structure distortion. The large magnetocaloric effect is explained by Jahn-Teller distortion and valence perturbations induced by La doping. The study also reveals a connection between complex magnetic phase transition and magnetic entropy in doped manganites, attributed to the temperature-dependent competition between orbital order and charge order.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Sen Shao, Jingkai Bi, Pengyue Gao, Guangtao Liu, Mi Zhou, Jian Lv, Yu Xie, Yanchao Wang
Summary: In this study, it was found that Ca(OH)(2) can remain stable under high pressures, with two different structures proposed. The high-pressure phases of Ca(OH)(2) are predicted to be stable against decomposition into CaO and H2O under certain pressure and temperature conditions.
Article
Nanoscience & Nanotechnology
Le Zhang, Xin Zhou, Shaohua Chai, Jian Guan, Guijun Fan, Wuxinchen Yang, Guojun Ma, Ning Han, Yunfa Chen
Summary: In this study, two polymorphs of cobalt hydroxide were synthesized and applied for ozone elimination. Beta-Co(OH)(2) showed high ozone decomposition efficiency under high space velocity and high humidity conditions, which can be attributed to its unique crystal structure and chemical properties.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Huanhuan Liu, Yanxu Chen, Huiyi Li, Guanglin Wan, Yafei Feng, Wentao Wang, Chong Xiao, Genqiang Zhang, Yi Xie
Summary: Photocatalytic CO2 reduction (PCR) has great potential to convert useless greenhouse gas into valuable chemical feedstock. However, the weak interactions between catalytic sites and PCR intermediates limits the PCR activity and selectivity. This study proposes a new strategy to match the intermediates by establishing dual Jahn-Teller (J-T) sites, which can enhance the catalytic activity and selectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Darren C. Peets, Maxim Avdeev, Marein C. Rahn, Falk Pabst, Sergey Granovsky, Markus Stotzer, Dmytro S. Inosov
Summary: Cyanochroite, a rare mineral with unique structure and magnetic properties, has been investigated in terms of its structure and magnetic response. Modifications to the positions of hydrogen atoms have been proposed based on our research, while the magnetic response is consistent with previous findings of free Cu2+ spins.
Article
Chemistry, Inorganic & Nuclear
Charlotte Pughe, Otto H. J. Mustonen, Alexandra S. Gibbs, Martin Etter, Cheng Liu, Sian E. Dutton, Aidan Friskney, Neil C. Hyatt, Gavin B. G. Stenning, Heather M. Mutch, Fiona C. Coomer, Edmund J. Cussen
Summary: Isovalent nonmagnetic d(10) and d(0) B cations can be used to tune the magnetic interactions between magnetic B' cations in perovskites. The changes in orbital hybridization and introduction of mixtures of d(10) and d(0) cations can lead to alternative magnetic structures and exotic quantum magnetism. Substituting Te6+ d(10) with W6+ d(0) in Ba2CuTeO6 affects the intraladder interactions and changes the system from a spin ladder to isolated spin chains.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Ines Sanchez-Movellan, David Carrasco-Busturia, Juan M. Garcia-Lastra, Pablo Garcia-Fernandez, Jose A. Aramburu, Miguel Moreno
Summary: This study investigates the pressure-induced switch of the long axis of MnF63- units in monoclinic Na3MnF6 compound and Mn3+-doped Na3FeF6 through first principles calculations. The results show that the switch is caused by the anisotropic response of the low symmetry lattice to hydrostatic pressure, rather than the static Jahn-Teller effect. This work provides insights into the effects of pressure on low symmetry insulating compounds containing d(4) or d(9) ions.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Mineralogy
Natale Perchiazzi, Isabel F. Barton, Pietro Vignola
CANADIAN MINERALOGIST
(2018)
Article
Geography, Physical
G. Mannella, B. Giaccio, G. Zanchetta, E. Regattieri, E. M. Niespolo, A. Pereira, P. R. Renne, S. Nomade, N. Leicher, N. Perchiazzi, B. Wagner
QUATERNARY SCIENCE REVIEWS
(2019)
Article
Mineralogy
Natale Perchiazzi, Ulf Halenius, Pietro Vignola, Nicola Demitri
EUROPEAN JOURNAL OF MINERALOGY
(2019)
Article
Geography, Physical
Eleonora Regattieri, Biagio Giaccio, Giorgio Mannella, Giovanni Zanchetta, Sebastien Nomade, Andrea Tognarelli, Natale Perchiazzi, Hendrik Vogel, Chiara Boschi, Russell Neil Drysdale, Bernd Wagner, Maurizio Gemelli, Polichronis Tzedakis
QUATERNARY SCIENCE REVIEWS
(2019)
Article
Engineering, Chemical
Claudia Belviso, Natale Perchiazzi, Francesco Cavalcante
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Biochemical Research Methods
Giorgio Mannella, Giovanni Zanchetta, Eleonora Regattieri, Natale Perchiazzi, Russell N. Drysdale, Biagio Giaccio, Melanie J. Leng, Bernd Wagner
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2020)
Article
Mineralogy
Cristian Biagioni, Yves Moelo, Natale Perchiazzi, Nicola Demitri, Federica Zaccarini
EUROPEAN JOURNAL OF MINERALOGY
(2019)
Article
Geochemistry & Geophysics
Chiara Boschi, Federica Bedini, Ilaria Baneschi, Andrea Rielli, Lukas Baumgartner, Natale Perchiazzi, Alexey Ulyanov, Giovanni Zanchetta, Andrea Dini
Article
Mineralogy
Cristian Biagioni, Donato Belmonte, Cristina Carbone, Roberto Cabella, Nicola Demitri, Natale Perchiazzi, Anthony R. Kampf, Ferdinando Bosi
MINERALOGICAL MAGAZINE
(2020)
Article
Mineralogy
Cristian Biagioni, Elena Bonaccorsi, Natale Perchiazzi, Ulf Halenius, Federica Zaccarini
MINERALOGICAL MAGAZINE
(2020)
Article
Multidisciplinary Sciences
Dario Di Giuseppe, Natale Perchiazzi, Daniele Brunelli, Tommaso Giovanardi, Luca Nodari, Giancarlo Della Ventura, Daniele Malferrari, Marcia Maia, Alessandro F. Gualtieri
Summary: Tremolite is a common amphibole species, and tremolite asbestos found along the MAR shows slight deviations from the ideal crystal structure due to differences in chemical-physical conditions. Oceanic tremolite asbestos is enriched in Al and Na, forming a distinct trend from continental tremolites.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
Natale Perchiazzi, Daniela Mauro, Pietro Vignola, Federica Zaccarini, Knut Eldjarn
Summary: A new mineral, zoisite-(Pb), has been discovered in the Jakobsberg manganese-iron oxide deposit in Varmland, Sweden. This study provides a comprehensive analysis of the chemical and crystal structure characteristics of zoisite-(Pb) and discusses the effects of incorporating Pb in its crystal structure.
Article
Multidisciplinary Sciences
Lisa Ghezzi, Enrico Mugnaioli, Natale Perchiazzi, Celia Duce, Chiara Pelosi, Erika Zamponi, Simone Pollastri, Beatrice Campanella, Massimo Onor, Mahmoud Abdellatief, Fabrizio Franceschini, Riccardo Petrini
Summary: Pyrolysis in an inert atmosphere is a common method to convert tannery wastes into reusable materials. However, in ambient temperature and wet environmental conditions, Cr(III) may convert into the toxic Cr(VI) form. It was found that spray water cooling during pyrolysis destabilized the primary Cr-bearing minerals, leading to the formation of extractable Cr(VI) species and the transformation of the waste from inert to hazardous.
SCIENTIFIC REPORTS
(2023)
Article
Geochemistry & Geophysics
Alessandro F. Gualtieri, Mauro Leoncini, Sonia Fantone, Silvia Di Valerio, Giovanni Tossetta, Antonio D. Procopio, Daniela Marzioni, Armanda Pugnaloni, Anna Maria Bassi, Vanessa Almonti, Serena Mirata, Stefania Vernazza, Sara Tirendi, Barbara Marengo, Nicola Traverso, Mario Passalacqua, Sonia Scarfi, Simona Raneri, Laura Fornasini, Danilo Bersani, Natale Perchiazzi, Paolo Ballirano, Alessandro Pacella, Andrea Bloise, Maria F. Ottaviani, Michele Mattioli, Matteo Giordani, Giancarlo Della Ventura
Summary: This paper introduces a special issue on mineral fibres and reports the major results accomplished by six different research units from Italian universities in the field of mineralogy, crystallography, and biology. The project aimed to increase the understanding of the toxicity and carcinogenicity mechanisms of mineral fibres, particularly asbestos and fibrous erionite, and revise the existing paradigms. The findings of the project have significant implications for advancing knowledge in these fields and understanding the biological activity of mineral fibres in vivo.
PERIODICO DI MINERALOGIA
(2023)
Article
Mineralogy
Natale Perchiazzi, Ulf Halenius, Nicola Demitri, Pietro Vignola
EUROPEAN JOURNAL OF MINERALOGY
(2020)