Polymer electrolytes confined in nanopores: using water as a means to explore the interfacial impedance at the nanoscale

Layson, Anthony R.; Teeters, Dale

doi:10.1016/j.ssi.2004.01.079

Cited by 15 publications

(8 citation statements)

References 41 publications

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“…Some quite promising results have been found when the nanoporous template for polymer electrolyte confinement was made by polycarbonate filtration membranes [20][21].…”

Section: Introductionmentioning

confidence: 99%

Impedance spectroscopy of PEO-lithium triflate confined in nanopores of alumina membranes

Castriota

Teeters

2005

Ionics

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Abstract. Polymeric electrolytes are very useful for their technological applications in different electrochemical devices such as batteries, electrochromic devices, smart windows, etc. One of the most studied solid electrolyte system is PEO (poly-ethylene oxide) complexed with various lithium salts. A limitation of this polymer electrolyte is low ionic conductivity. However, nanoscale manipulation of the solid polymer electrolyte has the potential to address this issue. This work discusses how it is possible to increase the PEO conductivity when this polymer is contained in nanostructures, specifically nanopores. The nanostructures used are alumina filtration membranes (thickness = 6 ~tm, diameter = 13 mm) with three different pore sizes 0.02 p~m, 0.1 ~tm and 0.2 p~m. Electrochemical characterization has been performed with an HP4194A Impedance/Gain phase analyser and Solartron 1260 Impedance/Gain phase analyser. The former instrument tests these films at a high frequency (from 100 Hz to 40 MHz) while the later at low frequency (from 1 Hz to 1 MHz). From these experiments, it has been determined that two regions of ion conduction exit. One is conduction through the bulk polymer electrolyte in the pores while the other is an interfacial conduction at the interface between the pore walls and the PEO electrolyte. The conductivity of the PEO is increased when confined in these nanostructures.

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“…Some quite promising results have been found when the nanoporous template for polymer electrolyte confinement was made by polycarbonate filtration membranes [20][21].…”

Section: Introductionmentioning

confidence: 99%

Impedance spectroscopy of PEO-lithium triflate confined in nanopores of alumina membranes

Castriota

Teeters

2005

Ionics

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“…The time required to register the full impedance spectrum is relatively long since in both techniques impedance spectra are made point by point (Layson et al, 2003;Layson & Teeters, 2004;Birbilis et al, 2009;Arutunow et al, 2011Arutunow et al, , 2013aArutunow et al, , 2013b. If impedance mapping is required, a single frequency is utilized in order to minimize the time of scanning (Kalinin & Bonnell, 2002;O'Hayre et al, 2004b;Pingree & Hersam, 2005).…”

Section: Introductionmentioning

confidence: 99%

Application of Dynamic Impedance Spectroscopy to Scanning Probe Microscopy

2014

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Dynamic impedance spectroscopy, designed for measuring nonstationary systems, was used in combination with scanning probe microscopy. Using this approach, impedance mapping could be carried-out simultaneously with topography scanning. Therefore, correlation of electrical properties with particular phases of an examined sample was possible. The sample used in this study was spheroidal graphite cast iron with clearly defined phases having significantly different properties. Additionally, impedance-force curves were made at graphite precipitation and ferrite matrix to illustrate the relation between impedance and the force applied to a probe.

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“…Depending on the lowest frequency limit, it can take from a few to a few hundred seconds. Owing to changes in the measuring system, mainly scanner drift, spectra are made pointwisẽ Layson et al, 2003;Layson & Teeters, 2004;Birbilis et al, 2009;Arutunow et al, 2011Arutunow et al, , 2013aArutunow et al, , 2013b!. An alternative is to measure impedance at one characteristic frequency.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Nanoimpedance Characterization of the Atomic Force Microscope Tip-Surface Contact

2013

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Nanoimpedance measurements, using the dynamic impedance spectroscopy technique, were carried out during loading and unloading force of a probe on three kinds of materials of different resistivity. These materials were: gold, boron-doped diamond, and AISI 304 stainless steel. Changes of impedance spectra versus applied force were registered and differences in the tip-to-sample contact character on each material were revealed. To enable comparison between materials and phases, a new standardization method is proposed, which simulates conditions of initial contact.

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Polymer electrolytes confined in nanopores: using water as a means to explore the interfacial impedance at the nanoscale

Cited by 15 publications

References 41 publications

Impedance spectroscopy of PEO-lithium triflate confined in nanopores of alumina membranes

Impedance spectroscopy of PEO-lithium triflate confined in nanopores of alumina membranes

Application of Dynamic Impedance Spectroscopy to Scanning Probe Microscopy

Dynamic Nanoimpedance Characterization of the Atomic Force Microscope Tip-Surface Contact

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