An Investigation of LiFePO₄/Poly(3,4-ethylenedioxythiophene) Composite Cathode Materials for Lithium-Ion Batteries

A novel nano-Sn particle/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/poly(vinyl alcohol) core–shell hierarchical composite as high-performance anode material for lithium ion batteries

“…For PEDOT:PSS/ PVA, except for above bands, the absorption peak also appears at 1092 cm -1 . The absorption peaks located at 2924 and 2853 cm -1 are assigned to the asymmetric stretching of CH 2 from PSS backbone; the peaks located at 1516, 1384, 1054 and 983 cm -1 are attributed to the stretching vibration of the thiophene ring, the C-C/C=C of the quinoidal structure, the C-O-C bond and the C-S bond from PEDOT and the peak located at 1092 cm -1 is ascribed to the C-O stretching vibration of the hydroxyl group in PVA [20,31,32]. All these typical absorption peaks indicate the successful coating of PEDOT:PSS/PVA on the nano-Sn particles.…”

Physico-Chemical and Electrochemical Properties of Si-Ti-Ni Alloy Modified with poly(3,4-ethylenedioxythiophene)

“…The ATR-FTIR spectrum for PEDOT-coated STN shows characteristic vibrational features of PEDOT without vibrational features related to any other organic matters. The C¼C asymmetric and symmetric stretching modes and C-C stretching deformation mode appear at 1522, 1414 and 1365 cm À1 , respectively [15,21,22]. In addition, in the range of low wavenumber C-S stretching vibrational modes and C-S-C vibrational mode attributed to the C-S bonding of thiophene ring are detected at 983 and 921 cm À1 and 691 cm À1 respectively [15,21,22].…”

“…The STN alloy employed in this study consists of 65.0, 17.5, and 17.5 atomic % of silicon, titanium, and nickel, respectively. For the surface modification, in-situ polymerization was carried out via an oxidative chemical polymerization of 3,4-ethylenedioxythiophene (EDOT, Sigma-Aldrich) [15,18]. The desired amount of EDOT was dissolved in 10.0 mL of distilled water/methanol (1:1 v/v) solution [19] with vigorous stirring because the methanol can aid to dissolve EDOT in aqueous medium despite of its low solubility [20].…”

“…Due to its various characteristics of high electrical conductivity and good thermal and chemical stabilities, PEDOT can be widely applied to electrode modification [12][13][14][15][16]. Particularly, it has allowed materials with low conductivity to improve their electrochemical properties [12][13][14][15][16]. For homogeneous coating, PEDOT was prepared by in-situ oxidative chemical polymerization directly onto the surface of STN particles.…”

Fabrication of fast switching electrochromic window based on poly(3,4-(2,2-dimethylpropylenedioxy)thiophene) thin film

“…The vibration at 1100 cm -1 is due to the stretching of alkylenedioxy group (C-O-C) present in the polymer, where the characteristic peak at 1491 cm -1 corresponds to methyl C-H asymmetry bending. The conjugated C=C stretching appeared at 1602 cm -1 and the band at 3039 cm -1 was assigned to the C-H stretching of thiophene ring [31,32]. Table 1 depicts all assignments of the FTIR spectrum of PProDOT-Me 2 thin film.…”