Article
Chemistry, Physical
Justyna E. Frackiewicz, Tomasz K. Pietrzak
Summary: The study demonstrates that thermal nanocrystallization of glassy analogs of LiFe1-xMnxPO4 results in highly conducting materials suitable for use as cathodes in Li-ion batteries. The electrical conductivity of the nanocrystalline samples varied depending on composition, with the conductivity of x=0.5 samples exceeding 10-3 S/cm at room temperature. The increase in conductivity was explained by Mott's theory of electron hopping and a core-shell concept.
Article
Chemistry, Physical
Maciej Nowagiel, Mateusz J. Samsel, Tomasz K. Pietrzak
Summary: Alluaudite-type materials are increasingly considered as potential cathode materials for sodium ion batteries. This study optimized synthesis parameters to obtain nanostructured alluaudite-type glass-ceramics with high phase purity, while investigating the effects of various factors on product quality. The nanomaterials showed significantly increased conductivity, with the highest value reached for the VFF composition.
Article
Materials Science, Multidisciplinary
Maciej Nowagiel, Anton Hul, Edvardas Kazakevicius, Algimantas Kezionis, Jerzy E. Garbarczyk, Tomasz K. Pietrzak
Summary: Recently, the interest in NASICON-type materials has increased due to their potential as cathode materials in sodium-ion batteries for large-scale energy storage. We used a simple technique of thermal nanocrystallization of glassy analogs to improve their electrical properties. Six nanomaterials in the Na3M2(PO4)(2)F-3 (M = V, Ti, Fe) system were studied. Through impedance measurements and in situ impedance spectroscopy, we successfully optimized the nanocrystallization process to enhance the electrical conductivity of the cathode nanomaterials.
Article
Energy & Fuels
Maciej Nowagiel, Mateusz J. Samsel, Edvardas Kazakevicius, Aldona Zalewska, Algimantas Kezionis, Tomasz K. Pietrzak
Summary: Alluaudite-type materials are attracting attention as potential cathode materials for sodium-ion batteries. Optimized thermal nanocrystallization can enhance the electrical conductivity of these materials. Nanostructured samples with increased electrical conductivity were synthesized. The electrochemical performance was modest with limited gravimetric capacity, indicating the need for further optimization.
Article
Nanoscience & Nanotechnology
Dana Kanzhigitova, Perizat Askar, Aslan Tapkharov, Vladislav Kudryashov, Munziya Abutalip, Raikhan Rakhmetullayeva, Salimgerey Adilov, Nurxat Nuraje
Summary: Proper assembly of hybrid materials leads to a sensitive conductive polymer sensor for detecting trace quantities of hydrogen gas. Chemical polymerization was used to fabricate thin films of vanadium pentoxide and polypyrrole, which showed an ordered structure as composites. The addition of a dopant improved the sensing performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lihua Wang, Guanghua Shen, Yanhua Zhao, Yongli Wang, Yongjie Zhao
Summary: A porous V2O5 nanosheet was synthesized using freeze-drying and heat-treatment processes, showing excellent performance in sodium/lithium ion storage.
Article
Materials Science, Multidisciplinary
Lingjiang Kou, Liyun Cao, Jiajia Song, Jianfeng Huang, Yong Wang, Koji Kajiyoshi
Summary: In this study, cobalt-doped vanadium pentoxide (Co-V2O5) microflowers were successfully synthesized, showing improved electronic conductivity and increased diffusion coefficient of lithium ions.
Article
Energy & Fuels
Yaqin Jiang, Hui Xu, Luohan Ren, Mingyang Ji, Xiaojuan Shen, Songjun Li
Summary: A novel Mn0.26V2O5 center dot nH(2)O nanoribbon cathode was synthesized by a facile ion-preintercalated/-doped strategy for intercalation pseudocapacitive Zn2+ storage. The cathode exhibits high capacity, excellent capacity retention, and good rate performance, showing promising applications in the field of intercalation pseudocapacitive materials.
Article
Chemistry, Analytical
Yanwei Li, Wenhan Xu, Tao Sun, Jinhuan Yao
Summary: A two-dimensional bilayered V2O5 center dot nH2O nanomaterial with Zn2+ intercalation was synthesized via a facile sol-gel method combined with vacuum freeze-drying. The microstructure and surface morphology were characterized by XRD, EDS, XPS, and SEM measurements. The Zn2+ intercalation resulted in the formation of a layer-by-layer stacked sheet-like morphology and promoted the presence of V4+ states in V2O5 center dot nH2O. Compared to the pure sample, the V2O5 center dot nH2O sample with Zn2+ intercalation showed improved rate capability, cycling stability, Na+ diffusivity, and reduced electrochemical reaction resistance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Jiaxin Hao, Hang Xia, Apparao M. Rao, Yongmin He, Jiang Zhou, Bingan Lu
Summary: Potassium-ion batteries are gaining interest as grid-scale energy storage devices due to their abundant potassium sources and low cost. However, the large size K+ ions cause severe structural damage to the host materials, leading to limited lifespan. In this study, an ultra-stable potassium cathode composed of single-bilayer V2O5 is prepared, exhibiting high capacity, excellent rate capability, and durable lifetime. The study provides new insights into host design for durable potassium cathode.
ENERGY STORAGE MATERIALS
(2022)
Article
Crystallography
Kai Guo, Wenchong Cheng, Haiyuan Liu, Wenhao She, Yinpeng Wan, Heng Wang, Hanbin Li, Zidan Li, Xing Zhong, Jinbo Ouyang, Neng Yu
Summary: This study develops water molecules and Sn co-doped hydrated V2O5 as a cathode material for zinc-ion batteries, showing remarkable electrochemical performance including high specific capacity, exceptional rate capability, and excellent cycling life. This is attributed to faster charge transfer kinetics and enhanced crystalline framework.
Article
Engineering, Environmental
Rui Tang, Kai Li, Changlin Liu, Yang Liu, Yun Gong, Jianhua Lin
Summary: A facile one-step hydrothermal method was used to synthesize m-BQ-V2O5 hierarchical microflowers with large lattice spacing and crystalline vacancies. The successful intercalation of m-BQ into V2O5 elongates the V-O bonds, resulting in unsaturated V centers and high storage capacity. The layered V-O-V framework prevents the leaching of m-BQ into the electrolyte and provides improved cycle stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jiaqi Li, Yanwei Li, Wenhan Xu, Jinhuan Yao, Qing Zhu, Bin Huang
Summary: A NaxV(2)O(5)center dot nH(2)O (VO-SDBS) sample with outstanding electrochemical performance is synthesized by a facile hydrothermal method. It exhibits excellent rate capability, superior cyclability, and enhanced zinc ion diffusivity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Yuanhao Xia, Qin Cao, Yan Wang, Xinlei Wang, Jie Zhou
Summary: In this study, the performance of three benzoquinone-intercalated V2O5 electrodes was systematically compared. The V2O5 intercalated by tetrabromo-benzoquinone showed outstanding capacity and cycle stability. DFT calculations and ex situ characterizations confirmed the reversibility of the intercalation process. The investigation of benzoquinone intercalators can guide the development of organic molecules intercalating two-dimensional oxides for robust ZIB applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Yuanhao Xia, Qin Cao, Yan Wang, Xinlei Wang, Jie Zhou
Summary: Intercalating vanadium pentoxide with benzoquinone molecules can significantly enhance the performance of aqueous zinc-ion batteries. In this study, the effects of different benzoquinone molecules on the electrochemical energy storage were systematically investigated using three different V2O5 electrodes. V2O5-BQ4Br exhibited outstanding capacity and cycle performance due to its lower binding energy, faster ion migration, and faster charge transfer. This comparative investigation can provide guidance for the development of intercalating molecules for robust ZIB applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Daniele Spada, Pantaleone Bruni, Stefania Ferrari, Benedetta Albini, Pietro Galinetto, Vittorio Berbenni, Alessandro Girella, Chiara Milanese, Marcella Bini
Summary: In this study, Sn/SnOx@C composites were prepared using electrospinning method, which showed greatly improved performance compared to conventional electrodes. The electrodes exhibited fast kinetics and stable cycling performance, making them promising for low-cost lithium-ion batteries.
Article
Electrochemistry
Lorenzo Mezzomo, Stefano Bonato, Silvia Mostoni, Barbara Di Credico, Roberto Scotti, Massimiliano D'Arienzo, Piercarlo Mustarelli, Riccardo Ruffo
Summary: Hybrid silica-based nanofillers were synthesized by grafting poly(ethylene glycol) short chains on the surface of SiO2 porous nanoparticles, leading to the formation of homogeneous poly(ethylene oxide)-based ceramic-in-polymer solid-state electrolytes. These electrolytes exhibited satisfactory ionic conductivity and excellent resistance against dendrite piercing, resulting in long operation times and improved device lifespan.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Tommaso Caielli, Alessandro Raffaele Ferrari, Simone Bonizzoni, Eva Sediva, Angela Capri, Mariarita Santoro, Irene Gatto, Vincenzo Baglio, Piercarlo Mustarelli
Summary: Water electrolyzers based on anion exchange membranes (AEMs) with poly(aryl piperidiniums) (PAPs) show promise for reducing the capital costs of green hydrogen production. Through optimized polymerization parameters, mechanically resistant PAP-based membranes with a thickness of 15 μm were obtained, exhibiting an impressive conductivity of 185 mS cm-1 and excellent stability in 1 M KOH solution at 80°C. These membranes outperformed a commercially available PAP-based membrane in an electrolyzer cell, demonstrating their potential as low-cost AEMs with easy synthesis.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Eva Sediva, Simone Bonizzoni, Tommaso Caielli, Piercarlo Mustarelli
Summary: The progress in AEMFCs performance is driven by improved water management through electrode layer engineering. The use of DRT as a diagnostic tool has simplified the electrode optimization process and increased the peak power density of AEMFCs.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Simone Bonizzoni, Diego Stucchi, Tommaso Caielli, Eva Sediva, Michele Mauri, Piercarlo Mustarelli
Summary: Water electrolysis is the most attractive method for producing green hydrogen, and Anion Exchange Membrane (AEM) water electrolyzers are a promising technology. However, AEMs still need improvement in terms of performance and stability. In this study, we report a simple and cost-effective chemical modification of polyketone (PK) to fabricate self-standing membranes with good ion exchange capacity. Preliminary electrolysis tests show that the PK-based membrane performs similarly to a commercial one.
Article
Chemistry, Multidisciplinary
Aleksander Szpakiewicz-Szatan, Szymon Starzonek, Tomasz K. Pietrzak, Jerzy E. Garbarczyk, Sylwester J. Rzoska, Michal Bockowski
Summary: A new nanocomposite material was synthesized from glass of NaFePO4 composition using high pressure processing. The sample's thermal, structural, electrical, and dielectric properties were characterized by DTA, XRD, and BDS techniques. The high-pressure-high-temperature treatment significantly increased the electrical conductivity by two orders of magnitude compared to the initial glass, and this effect was stronger than the lithium analogue. This enhancement was attributed to enhanced electron hopping in the pressure-treated samples according to Mott's theory. The nanocrystalline composite consisted of NASICON and alluaudite phases, which could serve as potential cathode materials for Na batteries.
Article
Chemistry, Analytical
Vincenzo Ferrone, Giuseppe Carlucci, Pantaleone Bruni, Lisa Marinelli, Pasquale Avino, Edoardo Milanetti, Serena Pilato, Leonardo Sbrascini, Pietro Di Profio, Stefania Ferrari
Summary: This work investigated the synthesis and characterization of electrospun PAN and PMMA stabilized in air, used as sorbent for solid-phase extraction of fluoroquinolones in plasma samples and subsequent quantification in UHPLC-PDA. Characterizations including morphology, thermal degradation behavior, porosity, surface area, and atomic structures distribution were performed on the electrospun membrane. A solid-phase extraction method was developed by studying parameters such as sorbent amount and sample pH. A UHPLC-PDA method for fluoroquinolones analysis was successfully developed and applied, showing advantages in terms of speed, accuracy, sensitivity, and high recoveries.
Article
Electrochemistry
Shahid Khalid, Nicolo Pianta, Piercarlo Mustarelli, Riccardo Ruffo
Summary: Batteries based on organic electrolytes are unsafe due to fire/explosion accidents. Aqueous batteries are considered as a good alternative, but their main weakness lies in the decomposition of water molecules. This perspective discusses the state-of-the-art of water-in-salt (WIS) electrolytes for aqueous energy storage systems and explores strategies to improve their electrochemical stability window (ESW). Challenges and future prospects for practical aqueous energy storage systems are also highlighted.
Article
Chemistry, Physical
Shahid Khalid, Nicolo Pianta, Simone Bonizzoni, Chiara Ferrara, Roberto Lorenzi, Alberto Paleari, Patrik Johansson, Piercarlo Mustarelli, Riccardo Ruffo
Summary: Highly concentrated aqueous binary solutions of acetate salts show potential for electrochemical applications, including energy storage. These solutions have high solubility and can reduce ion activity, leading to better stability of the electrolyte. The addition of Li+ or Na+ allows compatibility with intercalation materials, making them suitable for rechargeable alkaline-ion batteries. However, a deeper understanding of their physicochemical properties is still needed. In this study, we investigated the properties of solutions with different concentrations of CH3COONa and found that the solution with 20 mol kg(-1) CH3COOK + 7 mol kg(-1) CH3COONa achieved the best balance between transport properties and electrochemical stability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Lorenzo Mezzomo, Nicolo Pianta, Irene Ostroman, Niv Aloni, Diana Golodnitsky, Emanuel Peled, Piercarlo Mustarelli, Riccardo Ruffo
Summary: New generation lithium batteries require better performances, improved safety, and sustainability. Deep Eutectic Solvents (DESs) made with 2,2,2-trifluoroacetamide (TFA) and LiPF6 show promise as safer and more environmentally sustainable electrolyte components. The DES composition tested against Li metal, LiFePO4 (LFP), and high voltage LiNi1-x-yMnxCoyO2 (NMC) demonstrates good electrochemical performance and improved thermal stability compared to a commercial liquid electrolyte.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Maciej Nowagiel, Anton Hul, Edvardas Kazakevicius, Algimantas Kezionis, Jerzy E. Garbarczyk, Tomasz K. Pietrzak
Summary: Recently, the interest in NASICON-type materials has increased due to their potential as cathode materials in sodium-ion batteries for large-scale energy storage. We used a simple technique of thermal nanocrystallization of glassy analogs to improve their electrical properties. Six nanomaterials in the Na3M2(PO4)(2)F-3 (M = V, Ti, Fe) system were studied. Through impedance measurements and in situ impedance spectroscopy, we successfully optimized the nanocrystallization process to enhance the electrical conductivity of the cathode nanomaterials.
Article
Chemistry, Analytical
Pantaleone Bruni, Pasquale Avino, Vincenzo Ferrone, Serena Pilato, Nadia Barbacane, Valentino Canale, Giuseppe Carlucci, Stefania Ferrari
Summary: A sorbent prepared from wastepaper samples enriched with iron oxide particles and graphene oxide was used for solid phase extraction of antibiotics. The precursor underwent a carbothermal reduction to form paramagnetic phases for sorbent recovery during analysis and to disperse and fix graphene and iron oxide in the cellulose structure. The UHPLC-PDA method using a 120 SB-C 18 poroshell column and a gradient elution showed superior performance compared to literature methods, with advantages of being environmentally friendly, scalable, and having improved absorption capacity and stability in acidic medium.
Article
Crystallography
Pawel Polak, Jan Jamroz, Tomasz K. Pietrzak
Summary: In this paper, metal-insulator transitions in vanadium (III) and (IV) oxides were observed using contemporary laboratory equipment. Precise investigation of changes in crystallographic structure as a function of temperature, observation of thermal effects, and quasi-continuous measurement of conductivity revealed considerable hysteresis in the transitions of these materials.
