Nuclear magnetic resonance study of PEO-based composite polymer electrolytes

Bloise, Antonio Carlos; Tambelli, C.C.; Franco, Rosemeire de Lordo; Donoso, José Pedro; Magon, Cláudio José; Souza, Milton Ferreira de; Rosario, Adriane V.; Pereira, Ernesto C.

doi:10.1016/s0013-4686(00)00755-6

Cited by 57 publications

(41 citation statements)

References 27 publications

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“…Figure 10A shows a typical 2D exchange/MAS 13 C spectrum with an exchange time of 0.4 s at 308 K, while the spectra for other temperatures are not shown here. It should be noted that 12 peaks are resolved in our spectrum while only one broad peak could be observed in the previous work in this system [15,16].…”

Section: The Dependence Of the Helical Jump Motion On The Temperaturecontrasting

confidence: 48%

“…They demonstrated that the cation mobility is assisted by segmental motion of the polymer [14]. Bloise et al studied the PEO/LiClO 4 and PEO/LiBF 4 systems mixed with carbon black and ceramic particles (α-Al 2 O 3 , γ-Al 2 O 3 , and TiO 2 ) by measuring the 1 H and 7 Li lineshapes and spin-lattice relaxation times as a function of temperature [15,16]. Spěváček et al studied the PEO/LiCF 3 SO 3 complexes and found out that the chemical shifts of 1 H and 13 C are the same for PEO in the amorphous and crystalline phases, indicating the same local structures in these two phases; they also measured the 1 H !…”

Section: Introductionmentioning

confidence: 99%

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Solid-State High-Resolution NMR Studies on PEO-Based Crystalline Solid Polymer Electrolytes for Lithium-Ion Battery

Peng

Yao

Chen

et al. 2015

Annual Reports on NMR Spectroscopy

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Section: The Dependence Of the Helical Jump Motion On The Temperaturecontrasting

confidence: 48%

Section: Introductionmentioning

confidence: 99%

Solid-State High-Resolution NMR Studies on PEO-Based Crystalline Solid Polymer Electrolytes for Lithium-Ion Battery

Peng

Yao

Chen

et al. 2015

Annual Reports on NMR Spectroscopy

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“…Such an interaction has been inferred from a shift in the Raman band for the ClO 4 and CF 3 SO 3 anions in the systems LiClO 4 , LiTf/PEO/TiO 2 [49] and LiClO 4 , LiTf/PMEO/TiO 2 . Donoso and coworkers [50] used 19 F decoupled 7 Li-NMR to find a decrease in the anion-cation interaction in PEO/LiBF 4 /Al 2 O 3 composites which has been interpreted in terms of an interaction between X − and the ceramic surface.…”

Section: Nanocompositesmentioning

confidence: 99%

Local Li Cation Coordination and Dynamics in Novel Solid Electrolytes

Wüllen¹,

Echelmeyer

Voigt

et al. 2010

Zeitschrift Für Physikalische Chemie

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Ionic TransportResearch on solid ionic conductors for use as electrolytes in all solid state batteries still constitutes a rather vivid branch of today's materials science. Despite enormous efforts, neither the development of a solid electrolyte fulfilling the key requirements such as mechanical stability and high ionic conductivity at ambient temperature has been successful nor has an extended understanding of the local Li coordination motifs in the often amorphous systems been obtained. In this contribution, recent progress both in the development of novel solid state electrolytes with high ionic conductivity and mechanical stability and in the characterization of the local Li coordination motifs in these electrolytes from our laboratory is presented. The work was performed as a project within the framework of the Collaborative Research Centre SFB 458 "Ionic Motion in Materials with Disordered Structures -From Elementary Steps to Macroscopic Transport". Results will be given for polymer electrolytes based on polyethylene oxide (PEO), polyphosphazene (PPZ) and polyacrylonitrile (PAN) with various Li salts, nano-composites of these polymer electrolytes and Al 2 O 3 as a ceramic filler, novel inorganic/organic hybrid electrolytes, in which a mixture of an ionic liquid and Li salt is confined within the pore system of a SiO 2 glass, and a crystalline electrolyte, Li 5 La 3 Nb 2 O 12 . Employing a range of advanced solid state NMR methodologies including dipolar based NMR techniques and pulsed field gradient (PFG) NMR and impedance spectroscopy we were able to obtain a detailed knowledge about the local Li cation coordination motifs and the mechanism of Li transport in these electrolytes. Especially the hybrid electrolytes and the salt rich PAN based polymer electrolytes were identified as rather promising materials which combine a high ionic conductivity and mechanical stability.

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“…The copolymer of vinylidene fluoride with hexafluoro propylene P(VdF-HFP) which contain amorphous domains capable of trapping large amount of liquid electrolytes and the crystalline phase acts as a mechanical support [22] . Recent studies reveal that only composite polymer electrolytes incorporated with inorganic filler can offer mechanically strong and safe batteries with improved electrolyte-electrode compatibility [23][24][25][26][27] . One of the functions of the fillers is the reduction of crystallinity of the host matrix.…”

Section: Introductionmentioning

confidence: 99%

“…One of the functions of the fillers is the reduction of crystallinity of the host matrix. Most of the recent papers deals with PEO incorporated with inert fillers [26,27] . In the present study, an attempt has been made to study the effect of inorganic filler, AlO[OH] n or γ-Al 2 O 3 on the ionic conductivity and compatibility of PVdF-HFP copolymer electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical studies on inert filler incorporated poly (vinylidene fluoride - hexafluoropropylene) (PVDF - HFP) composite electrolytes

2006

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The ionic conductivity, thermal stability and lithium transference number have been investigated in composite polymer electrolytes (CPE) of poly(vinylidene fluoride -hexafluoropropylene) (PVDF-HFP) incorporating nano fillers of AlO[OH] n or γ-Al 2 O 3 , with LiClO 4 as salt. The compatibility of the composite polymer electrolyte with lithium metal anode has also been studied. The effect of particle size on the compatibility of Li/ CPE/ Li symmetric cells has also been analyzed.

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Nuclear magnetic resonance study of PEO-based composite polymer electrolytes

Cited by 57 publications

References 27 publications

Solid-State High-Resolution NMR Studies on PEO-Based Crystalline Solid Polymer Electrolytes for Lithium-Ion Battery

Solid-State High-Resolution NMR Studies on PEO-Based Crystalline Solid Polymer Electrolytes for Lithium-Ion Battery

Local Li Cation Coordination and Dynamics in Novel Solid Electrolytes

Electrochemical studies on inert filler incorporated poly (vinylidene fluoride - hexafluoropropylene) (PVDF - HFP) composite electrolytes

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