Enhancement of lithium conductivity and evidence of lithium dissociation for LLTO-PMMA nanocomposite electrolyte

Romero, Mariano; Faccio, Ricardo; Vázquez, Santiago; Mombrú, Álvaro W.

doi:10.1016/j.matlet.2016.02.128

Cited by 36 publications

(21 citation statements)

References 29 publications

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“…The increment of conducting polymer electronic charge carriers near the interphase could be discussed in view of at least two eventual scenarios: (one or passive ) the dopant stabilizes at the interphase due to strong polar or coulombic interactions with nanoparticles surface, or/and (two or active ) the nanoparticles are also good electronic acceptors, producing in both cases an enhancement on the doping of nearby polymer chains, as schematized in Figure 1C (upper panel). On the other hand, micro-Raman imaging has also been useful to evidence the enhancement of ionic-pair dissociation occurring near the interphase with inorganic nanoparticles, in agreement with the increment of ionic conductivity (Romero et al, 2016 ; Pignanelli et al, 2018 , Pignanelli et al, 2019a ). Analogously, two different scenarios could be discussed for ionic charge carriers: (one or passive ) the counter-ion (in analogy to the dopant anion) stabilizes at the interphase due to strong polar or coulombic interactions with nanoparticles surface yielding an enhancement on the ionic-pair dissociation, or/and (two or active ) the nanoparticles may also possess mobile ionic carriers at the surface (e.g., active filler) that can be injected into the polymer, as schematized in Figure 1C (lower panel).…”

Section: Charge Carrier Localizationmentioning

confidence: 90%

“…An example on the use of Raman imaging to monitor the state of charge for a Li 1−x (Ni y Co z Al 1−y−z )O 2 cathode is shown and described briefly in Figure 1B (Nanda et al, 2011 ). In addition, the use of micro-Raman imaging technique is highly powerful to study simultaneously both compositional and microstructural features, especially for hybrid inorganic–organic materials, as the characteristic Raman signals for inorganic and organic compounds generally lie well-separated at lower (ν < 800 cm −1 ) and higher (ν > 800 cm −1 ) wavenumbers, respectively (Romero et al, 2016 ; Mombrú et al, 2017a , b , c ; Pignanelli et al, 2018 , 2019a , b ). Furthermore, although Raman spectroscopy is quite sensitive to diluted effects such as doping processes of inorganic materials, it is on the other hand, extremely sensitive to doping effects of organic materials such as conducting polymers (Furukawa, 1996 ).…”

Section: Charge Carrier Localizationmentioning

confidence: 99%

“…This figure was used and adapted/altered minimally with permission from John Wiley and Sons. (C) Raman imaging and schematization of charge carrier localization near hybrid organic–inorganic interphases for electronic conducting polymer nanocomposite (sulfonic acid-doped polyaniline with embedded TiO 2 nanoparticles; Mombrú et al, 2017a ) (upper panel) and ionic conducting polymer nanocomposite (lithium nitrate solid polymethylmethacrylate electrolyte with embedded Li 0.3 La 0.7 TiO 3 nanoparticles; Romero et al, 2016 ) (lower panel). References for schematization are as follows: organic polymer (blue), inorganic nanoparticles (red), dopant cation (+, in pink), dopant anion (–, in purple), and electronic charge carriers (+, in dark blue).…”

Section: Charge Carrier Localizationmentioning

confidence: 99%

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Mini-Review: Mixed Ionic–Electronic Charge Carrier Localization and Transport in Hybrid Organic–Inorganic Nanomaterials

et al. 2020

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In this mini-review, a comprehensive discussion on the state of the art of hybrid organic-inorganic mixed ionic-electronic conductors (hOI-MIECs) is given, focusing on conducting polymer nanocomposites comprising inorganic nanoparticles ranging from ceramic-in-polymer to polymer-in-ceramic concentration regimes. First, a brief discussion on fundamental aspects of mixed ionic-electronic transport phenomena considering the charge carrier transport at bulk regions together with the effect of the organic-inorganic interphase of hybrid nanocomposites is presented. We also make a recount of updated instrumentation techniques to characterize structure, microstructure, chemical composition, and mixed ionic-electronic transport with special focus on those relevant for hOI-MIECs. Raman imaging and impedance spectroscopy instrumentation techniques are particularly discussed as relatively simple and versatile tools to study the charge carrier localization and transport at different regions of hOI-MIECs including both bulk and interphase regions to shed some light on the mixed ionic-electronic transport mechanism. In addition, we will also refer to different device assembly configurations and in situ/operando measurements experiments to analyze mixed ionic-electronic conduction phenomena for different specific applications. Finally, we will also review the broad range of promising applications of hOI-MIECs, mainly in the field of energy storage and conversion, but also in the emerging field of electronics and bioelectronics.

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Section: Charge Carrier Localizationmentioning

confidence: 90%

Section: Charge Carrier Localizationmentioning

confidence: 99%

Section: Charge Carrier Localizationmentioning

confidence: 99%

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Mini-Review: Mixed Ionic–Electronic Charge Carrier Localization and Transport in Hybrid Organic–Inorganic Nanomaterials

et al. 2020

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“…Furthermore, the charge transfer is governed by radical cations (polaron) or dications (bipolaron) that are delocalized over several units of the polymers [21,22]. The higher radical density leads to the greater electrical conductivity that governs photocatalysts’ properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a PANI/ZnO Composite for Efficient Photocatalytic Degradation of Acid Blue

et al. 2018

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Polyaniline/zinc oxide (PANI/ZnO) composite photocatalysts were prepared from neutral media by in situ chemical oxidation of aniline (ANI) in the presence of different amounts of diethylene glycol (DEG). The PANI/ZnO composite photocatalysts were synthesized to efficiently remove organic dye (acid blue, AB25) from model wastewater. The PANI/ZnO composite photocatalysts were studied with the intention of efficient removal of organic dye (acid blue, AB25) from wastewater to obtain low-cost heterogeneous catalysts that offer high catalytic activity and stability. The conductive PANI polymer, which absorbs Vis irradiation, was used in this work as ZnO absorbs only ultraviolet (UV) irradiation; thus, the composite photocatalysts’ activity was broadened into the Vis region. Characterization of the composite photocatalysts was done by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, electric conductivity, UV-Vis spectroscopy, and by specific surface area (SBET) measurements. The composites’ photocatalytic activity under solar irradiation was validated by monitoring degradation of the AB25 dye. This study presented that it was possible both to prepare PANI and to prevent ZnO dissolution if in situ polymerization starts from neutral media with the addition of DEG. Additionally, efficient removal of AB25 dye, about 90% in 60 min, was achieved. The first-order rate constants of the photodegradation of AB25 by PANI/ZnO 0.02/0.024/0.04 DEG (and pure ZnO)) were computed to be 0.0272/0.0281/0.0325 (and 0.0062) min−1, indicating that the morphology and surface of the photocatalysts have significantly influenced the catalytic activity.

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“…[30,31] However,t he mechanical strength of GPE membranes is not satisfactory,e specially after uptake of electrolyte. [32] To solve this problem, some ceramic particles such as passivem aterials TiO 2 , [33] SiO 2 , [34] ZrO 2 , [35] or active materials La 0.5 Li 0.5 TiO 3, [36] Li 1.5 Al 0.5 Ti 1.5 (PO 4 ) 3 (LATP) [37] were dispersed or embedded into the gel polymerm atrix to reinforce the mechanical stability. Moreover,t he interaction of inorganic particles on polymer electrolyte has been extensivelyr esearched.…”

Section: Introductionmentioning

confidence: 99%

A Newly Designed Composite Gel Polymer Electrolyte Based on Poly(Vinylidene Fluoride‐Hexafluoropropylene) (PVDF‐HFP) for Enhanced Solid‐State Lithium‐Sulfur Batteries

Xia

Wang

Xia

et al. 2017

Chemistry A European J

127

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Developing high-performance solid-state electrolytes is crucial for the innovation of next-generation lithium-sulfur batteries. Herein, a facile method for preparation of a novel gel polymer electrolyte (GPE) based on poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) is reported. Furthermore, Li Al Ti (PO ) (LATP) nanoparticles as the active fillers are uniformly embedded into the GPE to form the final PVDF-HFP/LATP composite gel polymer electrolyte (CPE). Impressively, the obtained CPE demonstrates a high lithium ion transference number of 0.51 and improved electrochemical stability as compared to commercial liquid electrolyte. In addition, the assembled solid-sate Li-S battery with the composite gel polymer electrolyte membrane presents a high initial capacity of 918 mAh g at 0.05 C, and better cycle performance than the counterparts with liquid electrolyte. Our designed PVDF-HFP/LATP composite can be a promising electrolyte for next-generation solid-state batteries with high cycling stability.

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Enhancement of lithium conductivity and evidence of lithium dissociation for LLTO-PMMA nanocomposite electrolyte

Cited by 36 publications

References 29 publications

Mini-Review: Mixed Ionic–Electronic Charge Carrier Localization and Transport in Hybrid Organic–Inorganic Nanomaterials

Mini-Review: Mixed Ionic–Electronic Charge Carrier Localization and Transport in Hybrid Organic–Inorganic Nanomaterials

Preparation of a PANI/ZnO Composite for Efficient Photocatalytic Degradation of Acid Blue

A Newly Designed Composite Gel Polymer Electrolyte Based on Poly(Vinylidene Fluoride‐Hexafluoropropylene) (PVDF‐HFP) for Enhanced Solid‐State Lithium‐Sulfur Batteries

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