A polymeric solid electrolyte based on a binary blend of poly(ethylene oxide), poly(methyl vinyl ether-maleic acid) and LiClO 4

Rocco, Ana Maria; Fonseca, Carla Polo; Pereira, Robson Pacheco

doi:10.1016/s0032-3861(02)00173-8

Cited by 63 publications

(41 citation statements)

References 31 publications

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“…Rocco et al showed that the crystallinity of LiClO 4 /PEO decreases with increasing amount of salt due to interactions between the lithium ions and the organic polymer. [37] The possible increase in the amorphous region of PEO owing to complexation of lithium ions is consistent with the disappearance of the shoulder at 1062 cm ±1 , from Figure 6b to Figure 6d, as this shoulder is also assigned to the C±O±C vibration mode of the crystalline phase of PEO. As the amorphous region of PEO predominates, the spectrum for the V 2 O 5 /blend film in Figure 6d becomes practically indistinguishable from that for V 2 O 5 /chitosan (Fig.…”

Section: Resultssupporting

confidence: 80%

Charge Storage Capability in Nanoarchitectures of V₂O₅/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique

Huguenin

Santos

Bassi

et al. 2004

Adv Funct Materials

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The electrochemical and electrochromic properties of layer‐by‐layer nanoarchitectures of V2O5/chitosan and V2O5 alternated with a blend of poly(ethylene oxide) (PEO) and chitosan have been examined. Using a blend was important, since multilayers of PEO/V2O5 could not be built. The number of electrochemically active V2O5 sites was estimated to be around 3.4 × 10–8 mol cm–2 and 4.4 × 10–8 mol cm–2 for V2O5/chitosan and V2O5/blend, respectively, based on the UV‐vis absorbance attributed to the intervalence V4+→V5+ transfer. A pronounced effect from PEO was observed in the migration/diffusion process, according to cyclic voltammetry and impedance spectroscopy data. The charges injected were 3.29 mC cm–2 and 8.02 mC cm–2 for V2O5/chitosan and V2O5/blend, respectively, at 20 mV s–1. For V2O5/blend, the chronopotentiometric curves show that x in LixV2O5 is about 1.77. Evidence of enhanced ionic transport was provided by the Fourier transform infrared (FTIR) spectrum, which indicated lithium complexation by PEO and formation of a larger amorphous phase of PEO within the V2O5 matrix. The importance of these results for the production of Li secondary microbatteries and electrochromic devices is discussed.

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Section: Resultssupporting

confidence: 80%

Charge Storage Capability in Nanoarchitectures of V₂O₅/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique

Huguenin

Santos

Bassi

et al. 2004

Adv Funct Materials

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“…However, the band is split into two at 2918 and 2884 cm -1 corresponding to asymmetric and symmetric CH 2 stretching, respectively [27]. Other bands at 1490, 1368-1342 and 1113 cm -1 are CH 2 scissoring, CH 2 wagging, C-O-C stretching modes [28,29]. The existence of chemical interchain between PEO with PI was proved by FTIR study.…”

Section: Results and Discussion 31 Ft-irmentioning

confidence: 84%

Preparation and characterization of novel thermoset polyimide and polyimide-peo doped with LiCF3SO3

Uğur¹,

Toker²,

Güngör

et al. 2014

Express Polym. Lett.

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Abstract. This paper deals with the synthesis and characterization of a new type of anhydrous ionic conducting lithium doped membranes consist of polyimide (PI), poly (ethylene oxide) (PEO) and lithium trifluoromethanesulfonate (LiCF 3 SO 3 ) for solid polymer electrolyte (SPE). For this purpose, different molar ratios of lithium salt (Li-salt) solution are added into poly (amic acid) (PAA) intermediate prepared from the reaction of 3,3!,4,4!-benzophenon tetracarboxylic dianhydride (BTDA) and 4,4!-oxydianiline (ODA). PEO is incorporated into PAA since it forms more stable complexes and possess high ionic conductivities. Then, Li-salt containing PAA solutions are imidized by thermal process. The effect of interaction between host polymer and Li-salt is characterized by FT-IR (Fourier Transform Infrared) spectroscopy and SEM (scanning electron micrsocopy). The conductivities of Li-salt and PEO containing PI composite membranes are in the range of 10 -7 -10 -5 S·cm -1 . The conductivity increases with incorporation of PEO. Thermogravimetric analysis results reveal that the PI/PEO/LiCF 3 SO 3 composite polymer electrolyte membranes are thermally stable up to 500°C.

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“…For pure PEO, C-H stretching mode can be observed at 2876 cm −1 , CH 2 scissoring mode at 1466 cm −1 , CH 2 wagging mode at 1360 and 1341 cm −1 , CH 2 twisting mode at 1279 cm −1 and 1241 cm −1 while CH 2 rocking mode at 960 and 841 cm −1 . The semicrystalline phase of PEO is confirmed by the presence of triplet peak of C-O-C stretching [17,18]. C-O-C stretching can be found at 1,145, 1,095, and 1059 cm −1 vibrations with maximum peak at 1095 cm −1 .…”

Section: Resultsmentioning

confidence: 89%

Morphology, chemical interaction, and conductivity of a PEO-ENR50 based on solid polymer electrolyte

Noor

Ahmad

Talib

et al. 2009

Ionics

149

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A solid polymer electrolytes (SPE) comprising blend of poly(ethylene oxide; PEO) and epoxidized natural rubber as a polymer host and LiCF 3 SO 3 as a dopant were prepared by solution-casting technique. The SPE films were characterized by field emission scanning electron microscopy to determine the surface morphology, X-ray diffraction, and differential scanning calorimeter to determine the crystallinity and thermogravimetric analysis to confirm the mass decrease caused by loss of the solvent. While the presence of the complexes was investigated by reflection Fourier transform infrared (ATR-FTIR) spectroscopy. Electrochemical impedance spectroscopy was conducted to obtain ionic conductivity. Scanning electron microscopy analysis showed that a rough surface morphology of SPE became smoother with addition of salt, while ATR-FTIR spectroscopy analysis confirmed the polymer salt complex formation. The interaction occurred between the salt, and ether group of polymer host where the triple peaks of ether group in PEO merged and formed one strong peak at 1,096 cm −1 . Ionic conductivity was found to increase with the increase of salt concentration in the polymer blend complexes. The highest conductivity achieved was 1.4× 10 −4 Scm −1 at 20 wt.% of LiCF 3 SO 3 , and this composition exhibited an Arrhenius-like behavior with the activation energy of 0.42 eV and the preexponential factor of 1.6×10 3 Scm −1 .

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A polymeric solid electrolyte based on a binary blend of poly(ethylene oxide), poly(methyl vinyl ether-maleic acid) and LiClO 4

Cited by 63 publications

References 31 publications

Charge Storage Capability in Nanoarchitectures of V₂O₅/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique

Charge Storage Capability in Nanoarchitectures of V₂O₅/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique

Preparation and characterization of novel thermoset polyimide and polyimide-peo doped with LiCF3SO3

Morphology, chemical interaction, and conductivity of a PEO-ENR50 based on solid polymer electrolyte

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A polymeric solid electrolyte based on a binary blend of poly(ethylene oxide), poly(methyl vinyl ether-maleic acid) and LiClO 4

Cited by 63 publications

References 31 publications

Charge Storage Capability in Nanoarchitectures of V2O5/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique

Charge Storage Capability in Nanoarchitectures of V2O5/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique

Preparation and characterization of novel thermoset polyimide and polyimide-peo doped with LiCF3SO3

Morphology, chemical interaction, and conductivity of a PEO-ENR50 based on solid polymer electrolyte

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Charge Storage Capability in Nanoarchitectures of V₂O₅/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique

Charge Storage Capability in Nanoarchitectures of V₂O₅/Chitosan/Poly(ethylene oxide) Produced Using the Layer‐by‐Layer Technique