1
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Mor J, Sharma SK. Decoupling of ion-transport from polymer segmental relaxation and higher ionic-conductivity in poly(ethylene oxide)/succinonitrile composite-based electrolytes having low lithium salt doping. Phys Chem Chem Phys 2024; 26:13306-13315. [PMID: 38639464 DOI: 10.1039/d4cp00735b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Only limited enhancement in room-temperature ionic-conductivity for poly(ethylene oxide), PEO, based electrolytes is possible due to coupling between ionic-conductivity and segmental relaxation. In the present study, we have achieved ionic-conductivity of 1.07 × 10-3 and 6.20 × 10-4 S cm-1 at 313 and 298 K, respectively, by adding 45 wt% of succinonitrile (SN) in PEO having low LiTFSI loading (Li : EO = 1 : 20). This enhancement in the ionic-conductivity is attributed to faster ion transport (diffusion coefficient, D = 3.63 × 10-5 cm2 s-1) occurring through the ion-transport channels as confirmed by positron annihilation lifetime spectroscopy. The ionic-transport through these channels is observed to be highly decoupled from the segmental relaxations as confirmed using broadband dielectric spectroscopy through Ratner's approach. The observed decoupling of ionic-conductivity from PEO segmental relaxation in PEO-SN composite-based electrolytes would be useful to design rather inexpensive all solid-state polymer electrolytes for Li ion batteries.
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Affiliation(s)
- J Mor
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - S K Sharma
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
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2
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Moualhi Y, Smari M, Rahmouni H. Understanding the charge carriers dynamics in the La 0.55Ca 0.45Mn 0.8Nb 0.2O 3 perovskite: scaling of electrical conductivity spectra. RSC Adv 2023; 13:30010-30021. [PMID: 37842665 PMCID: PMC10571096 DOI: 10.1039/d3ra05747j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023] Open
Abstract
The present work proposes the best realistic theoretical approaches to examine the experimental conductivity data taken for La0.55Ca0.45Mn0.8Nb0.2O3. For this purpose, we comprehensively discussed the structural, microstructural, and electrical properties of the La0.55Ca0.45Mn0.8Nb0.2O3 perovskite. Both X-ray diffraction and Rietveld analysis show the orthorhombic structure of the ceramic. Scanning electron microscope showed the existence of well-defined irregularly shaped particles with a grain-size distribution of 0.843 μm. The X-ray photoemission spectroscopy reveals the existence of Mn3+ and Mn4+ states. The complicated behavior of the lanthanum states is demonstrated using the La3d line. AC-conductivity responses are related to the correlated barrier hopping contribution. At high temperatures, the compound's semiconductor behavior is attributed to the activation of the polaronic transport. At low temperatures, the occurrence of semiconductor behavior in the La0.55Ca0.45Mn0.8Nb0.2O3 ceramic is attributed to the effect of the variable range hopping conduction process. The application of the time-temperature-superposition-principle and the Summerfield scaling formalisms leads to the superposition of the isotherms. Using the Ghosh formalism, the superposition of the spectra confirms that the number density and the hopping distance are temperature-dependent. The superposition of the spectra suggested the temperature-independent relaxation and polaronic processes. In addition, it confirms that the relaxation mechanism is independent of the microstructure response.
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Affiliation(s)
- Y Moualhi
- Unité de Recherche Matériaux Avancés et Nanotechnologies (URMAN), Institut Supérieur des Sciences Appliquées et de Technologie de Kasserine, Université de Kairouan 1200 Kasserine BP 471 Tunisia
| | - M Smari
- A. Chełkowski Institute of Physics, University of Silesia in Katowice 75 Pułku Piechoty 1 Chorzów 41-500 Poland
| | - H Rahmouni
- Unité de Recherche Matériaux Avancés et Nanotechnologies (URMAN), Institut Supérieur des Sciences Appliquées et de Technologie de Kasserine, Université de Kairouan 1200 Kasserine BP 471 Tunisia
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3
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Saini S, Balani K, Maiti T. The analysis of charge transport mechanism in mixed ionic electronic conductor composite of Sr 2TiCoO 6double perovskite with yttria stabilized zirconia. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:315703. [PMID: 34132203 DOI: 10.1088/1361-648x/ac0283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/18/2021] [Indexed: 06/12/2023]
Abstract
In this investigation, the ionic conduction mechanism in mixed ionic electronic conductors composites of Sr2TiCoO6/YSZ has been studied with the help of universal dynamic response. 3 mol% and 8 mol% yttria stabilized ZrO2have been mixed with Sr2TiCoO6(STC) double perovskite in 1:1 ratio to prepare STC/3YSZ and STC/8YSZ composites via solid-state reaction route. AC Impedance spectroscopy has been carried out to examine the charge transport mechanism, which has been modeled using the microstructural networks of resistors and capacitors. Grain boundaries are more resistive and capacitive compared to the bulk. Modulus spectroscopy analysis demonstrates the non-Debye character of conductivity relaxation with frequency. Complex frequency-dependent AC conductivity is found to obey Almond West power law and reveals that ion migration occurs through the correlated hopping mechanism. Further, the DC conductivity and relaxation time have been found to follow the Barton Nakajima and Namikawa relation, which is correlated with AC to DC conduction. The time-temperature superposition principle has been used to explain the conductivity scaling in the intermediate frequency range. At low temperatures, the ions are localized in the asymmetric potential well, while at high temperatures, hopping behavior starts dominating. Further Kramers-Kronig transformation connects the dielectric strength with conductivity relaxation and verifies the impedance data.
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Affiliation(s)
- Sudha Saini
- Plasmonic and Perovskites Laboratory, Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, UP 208016, India
- Biomaterials Laboratory, Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, UP 208016, India
| | - Kantesh Balani
- Biomaterials Laboratory, Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, UP 208016, India
| | - Tanmoy Maiti
- Plasmonic and Perovskites Laboratory, Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, UP 208016, India
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4
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Ławniczak P, Petzelt J, Bovtun V, Savinov M, Kempa M, Nuzhnyy D, Pawłowski A. Proton dynamics in superprotonic Rb 3H(SeO 4) 2crystal by broadband dielectric spectroscopy. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:465401. [PMID: 32756024 DOI: 10.1088/1361-648x/abac8c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/05/2020] [Indexed: 06/11/2023]
Abstract
Broadband dielectric and AC conductivity spectra (1 Hz to 1 THz) of the superprotonic single crystal Rb3H(SeO4)2(RHSe) along thecaxis were studied in a wide temperature range 10 K 453 K) phases. A contribution of the interfacial electrode polarization layers was separated from the bulk electrical properties and the bulk DC conductivity was evaluated above room temperature. The phase transition to the superprotonic phase was shown to be connected with the steep but almost continuous increase in bulk DC conductivity, and with giant permittivity effects due to the enhanced bulk proton hopping and interfacial electrode polarization layers. The AC conductivity scaling analysis confirms validity of the first universality above room temperature. At low temperatures, although the conductivity was low, the frequency dependence of dielectric loss indicates no clear evidence of the nearly constant loss effect, so-called second universality. The bulk (intrinsic) dielectric properties, AC and DC conductivity of the RHSe crystal at frequencies up to 1 GHz are shown to be caused by the thermally activated proton hopping. The increase of the AC conductivity above 100 GHz could be assigned to the low-frequency wing of proton vibrational modes.
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Affiliation(s)
- Paweł Ławniczak
- Institute of Molecular Physics Polish Academy of Sciences, Mariana Smoluchowskiego 17, 60-179 Poznań, Poland
| | - Jan Petzelt
- Institute of Physics Czech Academy of Sciences, Na Slovance 8, 182-21 Praha 8, Czech Republic
| | - Viktor Bovtun
- Institute of Physics Czech Academy of Sciences, Na Slovance 8, 182-21 Praha 8, Czech Republic
| | - Maxim Savinov
- Institute of Physics Czech Academy of Sciences, Na Slovance 8, 182-21 Praha 8, Czech Republic
| | - Martin Kempa
- Institute of Physics Czech Academy of Sciences, Na Slovance 8, 182-21 Praha 8, Czech Republic
| | - Dmitry Nuzhnyy
- Institute of Physics Czech Academy of Sciences, Na Slovance 8, 182-21 Praha 8, Czech Republic
| | - Antoni Pawłowski
- Institute of Molecular Physics Polish Academy of Sciences, Mariana Smoluchowskiego 17, 60-179 Poznań, Poland
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5
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Ławniczak P, Pawłowski A, Pawlaczyk C. First universality of conductivity spectra in superprotonic (NH 4) 3H(SO 4) 2 single crystal. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:375401. [PMID: 31146270 DOI: 10.1088/1361-648x/ab25a9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We present the frequency study of electric conductivity in the superprotonic single crystal in a wide temperature range covering the superprotonic phase I and the low conducting, ferroelastic phase II. The data below microwave frequencies are analyzed using the Summerfield scaling method to check for presence of the first universality. The scaled conductivity obtained from the raw experimental data plotted versus scaled frequency do not show the universality because it contains, in a low temperature range, steps related to relaxational dielectric contribution. The contribution, evidenced by a temperature study of frequency dependence of ε″, presumably comes from polar ammonia and therefore does not reflect properties of the hopping motion of mobile ions. To get rid of it, the conductivity is calculated using the impedance data obtained from the fitting procedure of the Nyquist plots. The resulting scaled ac conductivity plot forms a single curve in a wide temperature range. Thus, (NH4)3H(SO4)2 meets criteria for the first universality, despite the fact that it undergoes the structural, superionic phase transition in the temperature range studied.
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Affiliation(s)
- Paweł Ławniczak
- Institute of Molecular Physics Polish Academy of Sciences, Poznań, ul. Mariana Smoluchowskiego 17, Poland
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6
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Hassen AB, Rhouma FIH, Daoudi M, Dhahri J, Zaidi M, Abdelmoula N. Influence of defect on the electrical and optical properties of A-site non-stoichiometry Ca 0.67La 0.22□ 0.11Ti (1-x)Cr x O 3-δ perovskite. RSC Adv 2019; 9:19285-19296. [PMID: 35519417 PMCID: PMC9065166 DOI: 10.1039/c9ra02815c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 05/21/2019] [Indexed: 11/30/2022] Open
Abstract
An investigation of the dielectric dispersion, electrical properties, scaling behavior and optical defects of Ca0.67La0.22□0.11Ti(1-x)Cr x O3-δ (CLT(1-x)Cr x ) with x = 0 and x = 0.1 compositions is presented. The square in the formula is attributed to a vacancy in A-site. Relaxation phenomena were studied with dielectric and modulus formalism, while, the conductivity mechanism was investigated using electrical conductivity. A high permittivity of around 104, low dielectric loss and low electrical conductivity of around 10-3 S cm-1 for Ca0.67La0.22TiO3 (CLT) was observed. These values make this composition interesting for microelectric applications. A comparison between the Z'' and M'' indicated that the short-range carrier motion dominates at low temperature and becomes less localized at high temperature. The optical defects of CLT and Ca0.67La0.22Ti0.9Cr0.1O3 (CLT0.9Cr0.1) were studied by electron paramagnetic resonance (EPR) spectroscopy. The results suggest the formation of a [TiO6]9- center, a (Ti3+-V O) center, and dipole defect for CLT compound and Cr3+-V O center defect for CLT0.9Cr0.1 compound. These defects are the source of the in-gap electron traps, which improve the optical properties of CLT(1-x)Cr x and hence make it an interesting optical material for different applications.
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Affiliation(s)
- A B Hassen
- Laboratoire de La Matière Condensée et des Nanosciences, Département de Physique, Faculté des Sciences de Monastir 5019 Tunisia
| | - F I H Rhouma
- Laboratoire de Photovoltaïque de Semi-conducteurs et de Nanostructures, Centre de Recherche des Scienes et Technologies de L'Energie BP. 95 Hammam-Lif 2050 Tunisia
| | - M Daoudi
- Laboratoire de Recherche Energie et Matière pour Les Développements des Sciences Nucléaire, Centre National des Sciences et Technologie Nucléaires 2020 Sidi-Thabet Tunisia
| | - J Dhahri
- Laboratoire de La Matière Condensée et des Nanosciences, Département de Physique, Faculté des Sciences de Monastir 5019 Tunisia
| | - M Zaidi
- Université de Monastir, Laboratoire de Micro-optoélectroniques et Nanostructures (LMON) Monastir 5000 Tunisia
| | - N Abdelmoula
- Laboratory of Multifunctional Materials and Applications (LaMMA), (LR16ES18), Faculty of Sciences of Sfax, University of Sfax B. P. 1171 3000 Sfax Tunisia
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7
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Sen S, Zhu H, Forsyth M, Bhattacharyya AJ. Time-Temperature Scaling and Dielectric Modeling of Conductivity Spectra of Single-Ion Conducting Liquid Dendrimer Electrolytes. J Phys Chem B 2019; 123:207-215. [PMID: 30516993 DOI: 10.1021/acs.jpcb.8b08985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We discuss here the time-temperature scaling and dielectric modeling of the variation of single-ion conductivity with frequency of first generation (G1) liquid dendrimer electrolyte, viz., Poly(propyl ether imine) (PETIM):Li-salt. The PETIM:Li-salt electrolyte exhibits a cation/anion transference number close to unity in the liquid state. On switching from an ester (G1-COOR) to cyano (G1-CN) peripheral group, keeping constant the linker (ether) and branching groups (amine), an interesting transformation from cationic ( t+ ∼1) to anionic conductor ( t- ∼1) takes place. The switch in the nature of the predominant charge carrier is directly related to the change in the magnitude of anion diffusion ( D-), which increases by 1 order of magnitude from D- = 1.1 × 10-12 m2 s-1 (at 30 °C) in G1-COOR to D- = 1.3 × 10-11 m2 s-1 (at 30 °C) in G1-CN. This intriguing ion transport mechanism is probed comprehensively using ac-impedance spectroscopy. The frequency dependent ionic conductivity of G1-CN/G1-COOR, comprised of distinct frequency regimes, is analyzed using the time-temperature superposition scaling principle (TTSP) based on Summerfield and Baranovski scaling methods. To gain insight into the electrical polarization (EP) phenomenon, the relevant frequency regime is converted from conductivity to dielectric versus frequency. The dielectric versus frequency data is modeled using Macdonald and Coelho. The combined approach of TTSP and dielectric modeling provide explicitly the extent of the influence of ion-dendrimer, ion-ion interactions, and also the mobile charge carrier density on the effective ion transport in the homogeneous single-ion conducting dendrimer electrolytes. The combined analysis suggests that ion transport in PETIM-COOR is only due to enhanced ion mobility, whereas in PETIM-CN it is due to both mobile charge carrier concentration and ion mobility. To the best of our knowledge, the scaling and modeling approaches employed here constitute a rare example for validation of such concepts in the context of dendrimer electrolytes.
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Affiliation(s)
- Sudeshna Sen
- Solid State and Structural Chemistry Unit , Indian Institute of Science , Bengaluru 560012 , India
| | - Haijin Zhu
- Institute for Frontier Materials , Deakin University , Waurn Ponds , VIC3216 , Australia
| | - Maria Forsyth
- Institute for Frontier Materials , Deakin University , Waurn Ponds , VIC3216 , Australia
| | - Aninda J Bhattacharyya
- Solid State and Structural Chemistry Unit , Indian Institute of Science , Bengaluru 560012 , India
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8
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Motovilov KA, Grinenko V, Savinov M, Gagkaeva ZV, Kadyrov LS, Pronin AA, Bedran ZV, Zhukova ES, Mostert AB, Gorshunov BP. Redox chemistry in the pigment eumelanin as a function of temperature using broadband dielectric spectroscopy. RSC Adv 2019; 9:3857-3867. [PMID: 35518099 PMCID: PMC9060503 DOI: 10.1039/c8ra09093a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/22/2019] [Indexed: 12/12/2022] Open
Abstract
We demonstrate on synthetic eumelanin that biomolecular conductivity models should account for temperature and hydration effects coherently.
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Affiliation(s)
| | - V. Grinenko
- Institute for Solid State and Materials Physics
- TU Dresden
- Dresden
- Germany
- Institute for Metallic Materials
| | - M. Savinov
- Institute of Physics AS CR
- Praha 8
- Czech Republic
| | | | | | - A. A. Pronin
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow
- Russia
| | - Z. V. Bedran
- Moscow Institute of Physics and Technology
- Russia
| | - E. S. Zhukova
- Moscow Institute of Physics and Technology
- Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow
- Russia
| | | | - B. P. Gorshunov
- Moscow Institute of Physics and Technology
- Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow
- Russia
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9
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Ławniczak P, Zdanowska-Frączek M, Lindner Ł, Pawłowski A. Uncommon first universality of conductivity in superprotonic (NH 4) 3H(SeO 4) 2 single crystals. Phys Chem Chem Phys 2019; 21:6051-6058. [DOI: 10.1039/c8cp07513a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The proton conducting crystal (NH4)3H(SeO4)2 is examined to check whether the first universality of conductivity spectra is sensitive to subtle changes in the crystal structure and proton dynamics caused by external pressure.
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Affiliation(s)
- Paweł Ławniczak
- Institute of Molecular Physics Polish Academy of Sciences
- 60-179 Poznań
- Poland
| | | | - Łukasz Lindner
- Institute of Molecular Physics Polish Academy of Sciences
- 60-179 Poznań
- Poland
| | - Antoni Pawłowski
- Institute of Molecular Physics Polish Academy of Sciences
- 60-179 Poznań
- Poland
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10
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Cosby T, Vicars Z, Mapesa EU, Tsunashima K, Sangoro J. Charge transport and dipolar relaxations in phosphonium-based ionic liquids. J Chem Phys 2017; 147:234504. [DOI: 10.1063/1.5011190] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Tyler Cosby
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Zachariah Vicars
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Emmanuel Urandu Mapesa
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Katsuhiko Tsunashima
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Wakayama College, 77 Noshima, Nada-cho, Gobo, Wakayama 644-0023, Japan
| | - Joshua Sangoro
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
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11
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Motovilov KA, Savinov M, Zhukova ES, Pronin AA, Gagkaeva ZV, Grinenko V, Sidoruk KV, Voeikova TA, Barzilovich PY, Grebenko AK, Lisovskii SV, Torgashev VI, Bednyakov P, Pokorný J, Dressel M, Gorshunov BP. Observation of dielectric universalities in albumin, cytochrome C and Shewanella oneidensis MR-1 extracellular matrix. Sci Rep 2017; 7:15731. [PMID: 29147016 PMCID: PMC5691187 DOI: 10.1038/s41598-017-15693-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 10/31/2017] [Indexed: 11/09/2022] Open
Abstract
The electrodynamics of metals is well understood within the Drude conductivity model; properties of insulators and semiconductors are governed by a gap in the electronic states. But there is a great variety of disordered materials that do not fall in these categories and still respond to external field in an amazingly uniform manner. At radiofrequencies delocalized charges yield a frequency-independent conductivity σ 1(ν) whose magnitude exponentially decreases while cooling. With increasing frequency, dispersionless conductivity starts to reveal a power-law dependence σ 1(ν)∝ν s with s < 1 caused by hopping charge carriers. At low temperatures, such Universal Dielectric Response can cross over to another universal regime with nearly constant loss ε″∝σ1/ν = const. The powerful research potential based on such universalities is widely used in condensed matter physics. Here we study the broad-band (1-1012 Hz) dielectric response of Shewanella oneidensis MR-1 extracellular matrix, cytochrome C and serum albumin. Applying concepts of condensed matter physics, we identify transport mechanisms and a number of energy, time, frequency, spatial and temperature scales in these biological objects, which can provide us with deeper insight into the protein dynamics.
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Affiliation(s)
- K A Motovilov
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia.
| | - M Savinov
- Institute of Physics AS CR, Praha 8, Czech Republic
| | - E S Zhukova
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia
- A.M. Prokhorov General Physics Institute, RAS, Moscow, Russia
- 1. Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
| | - A A Pronin
- A.M. Prokhorov General Physics Institute, RAS, Moscow, Russia
| | - Z V Gagkaeva
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia
| | - V Grinenko
- Institute for Metallic Materials, IFW Dresden, Dresden, Germany
| | - K V Sidoruk
- Scientific Center of Russian Federation Research Institute for Genetics and Selection of Industrial Microorganisms, Moscow, Russia
| | - T A Voeikova
- Scientific Center of Russian Federation Research Institute for Genetics and Selection of Industrial Microorganisms, Moscow, Russia
| | - P Yu Barzilovich
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia
| | - A K Grebenko
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia
| | - S V Lisovskii
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia
| | | | - P Bednyakov
- Institute of Physics AS CR, Praha 8, Czech Republic
| | - J Pokorný
- Institute of Physics AS CR, Praha 8, Czech Republic
| | - M Dressel
- 1. Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
- Moscow Institute of Physics and Technology, Institutsky lane 9, Dolgoprudny, Moscow, 141701, Russia
| | - B P Gorshunov
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia.
- A.M. Prokhorov General Physics Institute, RAS, Moscow, Russia.
- 1. Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany.
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12
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Halder S, Dutta A, Sinha TP. Time–temperature superposition in the grain and grain boundary response regime of A2HoRuO6(A = Ba, Sr, Ca) double perovskite ceramics: a conductivity spectroscopic analysis. RSC Adv 2017. [DOI: 10.1039/c7ra08295a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The realisation of a universal scaling parameter accounting for the time–temperature superposition principle in different electroactive microstructural domains seems improbable.
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Affiliation(s)
| | - Alo Dutta
- Department of Condensed Matter Physics and Material Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata 700098
- India
| | - T. P. Sinha
- Department of Physics
- Bose Institute
- Kolkata 700009
- India
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13
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Dam T, Jena SS, Pradhan DK. The ionic transport mechanism and coupling between the ion conduction and segmental relaxation processes of PEO20-LiCF3SO3 based ion conducting polymer clay composites. Phys Chem Chem Phys 2016; 18:19955-65. [DOI: 10.1039/c6cp01744d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An insight into thermally activated ion-hopping, relaxation dynamics and the coupled ion-conduction mechanism observed in ion-conducting polymer clay composites.
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Affiliation(s)
- Tapabrata Dam
- Department of Physics and Astronomy
- National Institute of Technology Rourkela
- Odisha-769008
- India
| | - Sidhartha S. Jena
- Department of Physics and Astronomy
- National Institute of Technology Rourkela
- Odisha-769008
- India
| | - Dillip K. Pradhan
- Department of Physics and Astronomy
- National Institute of Technology Rourkela
- Odisha-769008
- India
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14
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Verma ON, Singh NK, Raghvendra R, Singh P. Study of ion dynamics in lanthanum aluminate probed by conductivity spectroscopy. RSC Adv 2015. [DOI: 10.1039/c5ra01146a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Conductivity Spectra of LaAlO3.
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Affiliation(s)
- Onkar Nath Verma
- Department of Physics
- Indian Institute of Technology (BHU)
- Varanasi-221005
- India
| | - Nitish Kumar Singh
- Department of Physics
- Indian Institute of Technology (BHU)
- Varanasi-221005
- India
| | | | - Prabhakar Singh
- Department of Physics
- Indian Institute of Technology (BHU)
- Varanasi-221005
- India
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15
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Sklepić K, Vorokhta M, Mošner P, Koudelka L, Moguš-Milanković A. Electrical Mobility of Silver Ion in Ag2O–B2O3–P2O5–TeO2 Glasses. J Phys Chem B 2014; 118:12050-8. [DOI: 10.1021/jp5073796] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Maryna Vorokhta
- Department of General
and Inorganic Chemistry, University of Pardubice, Faculty of Chemical Technology, 53210 Pardubice, Czech Republic
| | - Petr Mošner
- Department of General
and Inorganic Chemistry, University of Pardubice, Faculty of Chemical Technology, 53210 Pardubice, Czech Republic
| | - Ladislav Koudelka
- Department of General
and Inorganic Chemistry, University of Pardubice, Faculty of Chemical Technology, 53210 Pardubice, Czech Republic
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Das S, Bhattacharyya AJ. Time-Temperature Scaling of Conductivity Spectra of Organic Plastic Crystalline Conductors. J Phys Chem Lett 2012; 3:3550-3554. [PMID: 26290986 DOI: 10.1021/jz301742z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Organic plastic crystalline soft matter ion conductors are interesting alternatives to liquid electrolytes in electrochemical storage devices such as lithium-ion batteries. The solvent dynamics plays a major role in determining the ion transport in plastic crystalline ion conductors. We present here an analysis of the frequency-dependent ionic conductivity of succinonitrile-based plastic crystalline ion conductors at varying salt composition (0.005 to 1 M) and temperature (-20 to 60 °C) using time-temperature superposition principle (TTSP). The main motivation of the work has been to establish comprehensive insight into the ion transport mechanism from a single method viz. impedance spectroscopy rather than employing cluster of different characterization methods probing various length and time scales. The TTSP remarkably aids in explicit identification of the extent of the roles of solvent dynamics and ion-ion interactions on the effective conductivity of the orientationally disordered plastic crystalline ion conductors.
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Affiliation(s)
- Supti Das
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Aninda J Bhattacharyya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
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Cramer C, De S, Schönhoff M. Time-humidity-superposition principle in electrical conductivity spectra of ion-conducting polymers. PHYSICAL REVIEW LETTERS 2011; 107:028301. [PMID: 21797645 DOI: 10.1103/physrevlett.107.028301] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Indexed: 05/31/2023]
Abstract
We analyze the scaling properties of the ac conductivity spectra of ion-conducting polyelectrolyte complexes of different compositions. Spectra were taken at ambient temperature but at different relative humidities. For the first time, we report on a scaling principle for conductivity spectra termed "time-humidity-superposition principle" in analogy with the well-known time-temperature-superposition principle. This model-free scaling holds for different materials over several decades in frequency. It implies that the hydration is activating ion motion over short and long distances in a similar general way, a concept so far only established for thermal energy.
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Affiliation(s)
- C Cramer
- Institute of Physical Chemistry, University of Muenster, Corrensstraße 28/30, 48149 Münster, Germany
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Mpoukouvalas K, Wang J, Wegner G. Conductivity of Poly(pyrrole)-Poly(styrene sulfonate) CoreâShell Nanoparticles. Chemphyschem 2010; 11:139-48. [DOI: 10.1002/cphc.200900643] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mixed-Alkali Effect of Tracer Diffusion and Ionic Conduction in Na-Rb Borate Glasses as a Function of Total Alkali Content. Z PHYS CHEM 2009. [DOI: 10.1524/zpch.218.12.1353.53833] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
The mixed-alkali effect is studied in Y [X Na2O · (1−X) Rb2O] · (1−Y) B2O3 glasses as a function of the total alkali content Y. To this aim the ionic transport in glasses with Y = 0.3 was investigated by impedance spectroscopy and by the radiotracer diffusion technique. The results are compared with data obtained earlier by our group on a glass system with Y = 0.2. In both systems the relative compositions X = Na/(Na + Rb) are varied from 0.0 to 1.0 in steps of 0.2. The dc electrical conductivity is higher in Y = 0.3 glasses than in Y = 0.2 glasses and exhibits a minimum in each system near X = 0.4. Also near X = 0.4 a pertaining maximum in activation enthalpy occurs being more pronounced for Y = 0.3 as compared to Y = 0.2. The glass-transition temperature T
g is almost identical for glasses with Y = 0.2 and 0.3 with a minimum near X = 0.2. The diffusivities of 22Na and 86Rb measured at a constant temperature (380 °C) show in both glass systems (Y = 0.3 and Y = 0.2) a similar dependence on the composition parameter X. The 86Rb diffusivity decreases exponentially with decreasing Rb content. The 22Na diffusivity decreases with decreasing Na content but reaches an almost constant plateau on the Rb-rich side. For each relative composition X the diffusivities of the two isotopes increase by nearly the same constant factor, when Y is increased from 0.2 to 0.3. In both systems 22Na- and 86Rb-diffusivities as functions of the composition parameter X intersect near X = 0.2 explaining the minimum in dc-conductivity. Composition dependent common Haven ratios were obtained by comparing the conductivity with the diffusion data.
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Imre AW, Schönhoff M, Cramer C. Unconventional scaling of electrical conductivity spectra for PSS-PDADMAC polyelectrolyte complexes. PHYSICAL REVIEW LETTERS 2009; 102:255901. [PMID: 19659097 DOI: 10.1103/physrevlett.102.255901] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Indexed: 05/03/2023]
Abstract
For the first time, we analyze ac conductivity spectra of various dried ionically cross-linked polyelectrolyte complexes in terms of the time-temperature superposition principle. The temperature-dependent spectra of some complexes show scaling properties that are distinctly different from the behavior of all other ion-conducting materials reported so far, but in agreement with model predictions by Roling [B. Roling, Phys. Chem. Chem. Phys. 3, 5093 (2001).10.1039/b105094j]. We conclude that the dc conductivity of the investigated PEC is always governed by the Na+ ions, even in complexes with excess of polycations and chloride anions.
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Affiliation(s)
- A W Imre
- Institut für Physikalische Chemie and Sonderforschungsbereich 458, Westfälische Wilhelms-Universität, Corrensstrasse 28/30, 48149 Münster, Germany
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Sangoro JR, Iacob C, Serghei A, Friedrich C, Kremer F. Universal scaling of charge transport in glass-forming ionic liquids. Phys Chem Chem Phys 2009; 11:913-6. [DOI: 10.1039/b816106b] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sangoro J, Iacob C, Serghei A, Naumov S, Galvosas P, Kärger J, Wespe C, Bordusa F, Stoppa A, Hunger J, Buchner R, Kremer F. Electrical conductivity and translational diffusion in the 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid. J Chem Phys 2008; 128:214509. [DOI: 10.1063/1.2921796] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Sangoro JR, Serghei A, Naumov S, Galvosas P, Kärger J, Wespe C, Bordusa F, Kremer F. Charge transport and mass transport in imidazolium-based ionic liquids. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 77:051202. [PMID: 18643055 DOI: 10.1103/physreve.77.051202] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2008] [Indexed: 05/26/2023]
Abstract
The mechanism of charge transport in the imidazolium-based ionic liquid 1,3-dimethylimidazolium dimethylphosphate is analyzed by combining broadband dielectric spectroscopy (BDS) and pulsed field gradient nuclear magnetic resonance (PFG NMR). The dielectric spectra are dominated-on the low-frequency side-by electrode polarization effects while, for higher frequencies, charge transport in a disordered matrix is the underlying physical mechanism. Using the Einstein and Einstein-Smoluchowski equations enables one to determine-in excellent agreement with direct measurements by PFG NMR-the diffusion coefficient of the charge carriers. By that, it becomes possible to extract from the dielectric spectra separately the number density and the mobilities of the charge carriers and the type of their thermal activation. It is shown that the observed Vogel-Fulcher-Tammann (VFT) dependence of the dc conductivity can be traced back to a similar temperature dependence of the mobility while for the number density an Arrhenius-type thermal activation is found. Extrapolating the latter to room temperature indicates that nearly all charge carriers are participating in the conduction process.
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Affiliation(s)
- J R Sangoro
- Institute for Experimental Physics I, University of Leipzig, Leipzig, Germany
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Rinke MT, Zhang L, Eckert H. Structural integration of tellurium oxide into mixed-network-former glasses: connectivity distribution in the system NaPO(3)-TeO(2). Chemphyschem 2007; 8:1988-98. [PMID: 17726674 DOI: 10.1002/cphc.200700358] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Sodium phosphate tellurite glasses in the system (NaPO(3))(x)(TeO(2))(1-) (x) were prepared and structurally characterized by thermal analysis, vibrational spectroscopy, X-ray photoelectron spectroscopy (XPS) and a variety of complementary solid-state nuclear magnetic resonance (NMR) techniques. Unlike the situation in other mixed-network-former glasses, the interaction between the two network formers tellurium oxide and phosphorus oxide produces no new structural units, and no sharing of the network modifier Na(2)O takes place. The glass structure can be regarded as a network of interlinked metaphosphate-type P(2) tetrahedral and TeO(4/2) antiprismatic units. The combined interpretation of the O 1s XPS data and the (31)P solid-state NMR spectra presents clear quantitative evidence for a nonstatistical connectivity distribution. Rather, the formation of homoatomic P--O--P and Te--O--Te linkages is favored over mixed P--O--Te connectivities. As a consequence of this chemical segregation effect, the spatial sodium distribution is not random, as also indicated by a detailed analysis of (31)P/(23)Na rotational echo double-resonance (REDOR) experiments.
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Affiliation(s)
- Matthias T Rinke
- Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstrasse 30, 48149, Münster, Germany
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Murugavel S, Roling B. Ionic Transport in Glassy Networks with High Electronic Polarizabilities: Conductivity Spectroscopic Results Indicating a Vacancy-Type Transport Mechanism. J Phys Chem B 2004. [DOI: 10.1021/jp036226g] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sevi Murugavel
- Institut für Physikalische Chemie and Sonderforschungsbereich 458 (DFG), Westfälische WilhelmsUniversität Münster, Corrensstr. 30, 48149 Münster, Germany
| | - Bernhard Roling
- Institut für Physikalische Chemie and Sonderforschungsbereich 458 (DFG), Westfälische WilhelmsUniversität Münster, Corrensstr. 30, 48149 Münster, Germany
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Ghosh A, Bhattacharya S. Comment on "ac conductivity spectra of alkali tellurite glasses: composition-dependent deviations from the Summerfield scaling". PHYSICAL REVIEW LETTERS 2003; 91:049601-049602. [PMID: 12906703 DOI: 10.1103/physrevlett.91.049601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2002] [Indexed: 05/24/2023]
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