Enhancement of the optical, thermal and electrical properties of PEO/PAM:Li polymer electrolyte films doped with Ag nanoparticles

Morsi, M.A.; El‐Khodary, Sherif A.; Rajeh, A.

doi:10.1016/j.physb.2018.04.009

Cited by 121 publications

(50 citation statements)

References 36 publications

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“…The frequency dependent imaginary part of the dielectric permittivity or dielectric loss (ɛ′′) is shown in Figure 10. It is observed that the dielectric loss (ɛ′′) value decreases with the increase of frequency for all solid polymer electrolytes [66]. The experimental data are in good agreement to the fitted data shown by a red solid line.…”

Section: Electrochemical Stability Windowsupporting

confidence: 80%

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

Arya¹

2018

Preprint

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Abstract:Herein, we present preparation of solid polymer electrolyte (SPE) comprising of PEO, NaPF6 and varying fraction of Succinonitrile (SN) by standard solution cast technique. The morphological features and structural properties were studied by the FESEM, XRD, respectively. FTIR was performed to study the interactions between polymer host, salt, and SN. Impedance spectroscopy, Transference number measurements, LSV and CV were used to examine the electrochemical properties. The complex permittivity/conductivity & modulus were studied to understand the dielectric properties by evaluating the dielectric strength, relaxation time, hopping frequency and dc conductivity. Based on the experimental results an interaction mechanism is presented.

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Section: Electrochemical Stability Windowsupporting

confidence: 80%

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

Arya¹

2018

Preprint

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“…The strong band at 1707 is assigned to the C═O stretching (amide I) . The significant characteristic peak at 1600 cm −1 is of N─H bending vibration (amide II) of the amide group of PAM . As seen, this band disappears on blending with Na‐CMC.…”

Section: Resultsmentioning

confidence: 78%

“…11 The significant characteristic peak at 1600 cm −1 is of N─H bending vibration (amide II) of the amide group of PAM. 12,14 As seen, this band disappears on blending with Na-CMC. The characteristic peak at 1470 cm −1 is ascribed to ─CH 2 ─ in-plane bending vibration.…”

Section: Measurementsmentioning

confidence: 69%

“…Polyacrylamide (PAM) is a linear, biocompatible, nontoxic, and polar polymer. Its ability to make strong interactions with other polymers and with the drug molecules, via the hydrogen bonding formation, facilitates its use for drug diffusion and release . Although it exhibits some weak mechanical properties, the blending of CMC and PAM is expected to provide a good film .…”

Section: Introductionmentioning

confidence: 99%

“…Its ability to make strong interactions with other polymers and with the drug molecules, via the hydrogen bonding formation, facilitates its use for drug diffusion and release. [11][12][13][14] Although it exhibits some weak mechanical properties, the blending of CMC and PAM is expected to provide a good film. 12 Mohy El-din et al 15 reported the ability of CMC-g-PAM to concentrate the dilute solutions of bovine serum albumin.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization, optical, and nanoscale free volume properties of Na‐CMC/PAM/CNT nanocomposites

Awad

El‐Gamal

Sayed

et al. 2019

Polymers for Advanced Techs

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Polyblend and nanocomposite films of sodium salt of carboxymethylcellulose (Na‐CMC)/polyacrylamide (PAM) and Na‐CMC/PAM modified with carbon nanotubes (CNT) were synthesized by the solution casting technique. The effect of PAM and CNT loading on the structural, optical, and nanoscale free volume properties of Na‐CMC was studied. X‐ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy exhibited the existence of strong interactions between Na‐CMC and PAM and the non‐destructive effect of CNT on Na‐CMC/PAM structure. The HR‐TEM revealed the multi‐walled structure of CNT with a 7.06‐nm wall thickness and a 6.92‐nm wall inner diameter. Positron annihilation lifetime spectroscopy (PALS) was done, in a vacuum and at 30°C to 200°C, to investigate the nanoscale free volume properties by using a conventional fast‐fast coincidence spectrometer. It was found that the o‐Ps lifetime (τ3) and free volume (Vh) increase with increasing CNT percentage in the Na‐CMC/PAM blend. The distribution of the o‐Ps lifetime was broadened with increasing CNT ratios. Furthermore, the glass transition temperature (Tg) increases with increasing loads of CNT. For the first time, a correlation was done between Urbach energy (EU) and Vh. Finally, the results were represented and discussed in the frame of free volume properties. Optical measurements showed that the transmittance T% of Na‐CMC/PAM was 91.12% and decreased to 68.42% and 36.45% after loading with 1.0 and 2.0 wt % CNT. In addition, the blend shows higher insulating properties compared with the individual polymers. The CNT incorporation reduces the band gap significantly and increases the EU in the films.

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High‐Energy‐Density Magnesium‐Air Battery Based on Dual‐Layer Gel Electrolyte

Chen

et al. 2021

Angewandte Chemie

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Mg‐air batteries are explored as the next‐generation power systems for wearable and implantable electronics as they could work stably in neutral electrolytes and are also biocompatible. However, high corrosion rate and low utilization of Mg anode largely impair the performance of Mg‐air battery with low discharge voltage, poor specific capacity and low energy density. Here, to the best of our knowledge, we first report a dual‐layer gel electrolyte to simultaneously solve the above two problems by preventing the corrosion of Mg anode and the production of dense passive layer, respectively. The resulting Mg‐air batteries produced an average specific capacity of 2190 mAh g−1 based on the total Mg anode (99.3 % utilization rate of Mg anode) and energy density of 2282 Wh kg−1 based on the total anode and air electrode, both of which are the highest among the reported Mg‐air batteries. Besides, our Mg‐air batteries could be made into a fiber shape, and they were flexible to work stably under various deformations such as bending and twisting.

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Enhancement of the optical, thermal and electrical properties of PEO/PAM:Li polymer electrolyte films doped with Ag nanoparticles

Cited by 121 publications

References 36 publications

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

Characterization, optical, and nanoscale free volume properties of Na‐CMC/PAM/CNT nanocomposites

High‐Energy‐Density Magnesium‐Air Battery Based on Dual‐Layer Gel Electrolyte

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