Solid-state electrochromic devices with Nb2O5:Mo thin film and gelatin-based electrolyte

Avellaneda, César O.; Vieira, Diogo F.; Al-Kahlout, Amal; Leite, E. R.; Pawlicka, Agnieszka; Aegerter, Michel A.

doi:10.1016/j.electacta.2007.05.065

Cited by 66 publications

(23 citation statements)

References 17 publications

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“…Although these studies revealed many of the properties of these complex systems, the conductivity mechanism is still not fully understood [6]. Usually both crystalline and amorphous phases are present in polymer electrolytes but conductivity mainly occurs in the amorphous phase [7]. The coupling between the polymer segmental relaxation and the ion transport in polymer electrolytes is fascinating; although it is not completely understood, it still holds the key to the development of new energy sources [8].…”

Section: Introductionmentioning

confidence: 99%

Influence of silver ion reduction on electrical modulus parameters of solid polymer electrolyte based on chitosan-silver triflate electrolyte membrane

Aziz¹,

Abidin²,

Arof³

2010

Express Polym. Lett.

191

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Abstract. The electric modulus properties of solid polymer electrolyte based on chitosan: AgCF3SO3 from 303 to 393 K have been investigated by using impedance spectroscopy. The shift of the M″ peak spectra with frequeny depends on the dissociation and association of ions. The lowest conductivity relaxation time τσ, was found for the sample with the highest conductivity. The real part of electrical modulus shows that the material is highly capacitive. The asymmetric peak of the imaginary part of electric modulus M″, predicts a non Debye type relaxation. The distribution of relaxation times was indicated by a deformed arc form of Argand plot. The increase of M′ and M″ values above 358 K can be attributed to the transformation of silver ions to silver nanoparticles. The complex impedance plots and ultraviolet-visible (UV-vis) absorption spectroscopy indicate the temperature dependent of silver nanoparticles in chitosan-silver triflate solid electrolyte. The formation of silver nanoparticles was confirmed by transmission electron microscopy (TEM). The scaling behavior of M″ spectra shows that the dynamical relaxation processes is temperature independent for aparticular composition. The β exponent value indicate that the conductivity relaxation is highly non exponential.

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Section: Introductionmentioning

confidence: 99%

Influence of silver ion reduction on electrical modulus parameters of solid polymer electrolyte based on chitosan-silver triflate electrolyte membrane

Aziz¹,

Abidin²,

Arof³

2010

Express Polym. Lett.

191

View full text Add to dashboard Cite

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“…During the last decades different systems have been extensively studied and most of them were based on poly(ethylene oxide) [2]. More recently new types of electrolytes based on natural polymers (like cellulose derivatives, chitosan, starch or natural rubber) have been proposed due to their biodegradability, low production cost, good physical and chemical properties and good performance as SPEs (solvent-free polymer electrolytes) [3][4][5]. Among these there is agar, which is an heterogeneous mixture of agaropectin and agarose [6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of polymer electrolyte based on agar and ionic liquids

Leones¹,

Sentanin²,

Rodrigues³

et al. 2012

Express Polym. Lett.

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Abstract. The possibility to use natural polymer as ionic conducting matrix was investigated in this study. Samples of agarbased electrolytes with different ionic liquids were prepared and characterized by physical and chemical analyses. Samples of solvent-free electrolytes were prepared and characterized by ionic conductivity measurements, thermal analysis, electrochemical stability, X-ray diffraction, scanning electron microscopy and Fourier Transform infrared spectroscopy. Electrolyte samples are thermally stable up to approximately 190°C. All the materials synthesized are semicrystalline. The electrochemical stability domain of all samples is about 2.0 V versus Li/Li + . The preliminary studies carried out with electrochromic devices (ECDs) incorporating optimized compositions have confirmed that these materials may perform as satisfactory multifunctional component layers in the field of 'smart windows', as well as ECD-based devices.

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“…This indicates that there is no phase transition occurring in the polymer matrix or that domains are formed by the addition of acid [7]. Therefore, no dynamic conformational change in the polymer matrix and H + ions might migrate through the conduction path formed by the lattice structure of the chitosan chains [8].…”

Section: Resultsmentioning

confidence: 95%

Ionic conductivity studies of chitosan-based polymer electrolytes doped with adipic acid

Idris

Aziz

Zambri

et al. 2009

Ionics

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Chitosan acetate-adipic acid film polymer electrolytes have been prepared by the solution cast technique. The highest conductivity is 1.4×10 −9 S cm −1 for 35 wt.% of adipic acid at room temperature. The sample with highest conductivity has the lowest activation energy. Calculations using the Rice and Roth model provide number of mobile ions, η. The conductivity is dependent on the diffusion coefficient and mobility.

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Solid-state electrochromic devices with Nb2O5:Mo thin film and gelatin-based electrolyte

Cited by 66 publications

References 17 publications

Influence of silver ion reduction on electrical modulus parameters of solid polymer electrolyte based on chitosan-silver triflate electrolyte membrane

Influence of silver ion reduction on electrical modulus parameters of solid polymer electrolyte based on chitosan-silver triflate electrolyte membrane

Investigation of polymer electrolyte based on agar and ionic liquids

Ionic conductivity studies of chitosan-based polymer electrolytes doped with adipic acid

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