Investigation of the position of Li+ ions in a polyacrylonitrile-based electrolyte by Raman and infrared spectroscopy

Wang, Zhaoxiang; Huang, Biying; Huang, Hong; Chen, Liquan; Xue, Rongjian; Wang, Fosong

doi:10.1016/0013-4686(95)00392-4

Cited by 92 publications

(42 citation statements)

References 12 publications

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“…In the upper layer, the CϵN stretching mode of PAN ͑at 2244 cm Ϫ1 ͒ varies strikingly with the salt content in the polymer electrolyte. Based on our previous report, 9 the splitting of the CϵN stretching band represents the association between the Li ϩ ion of the salt and the nitrogen atom of PAN. Figure 3 also shows the difference spectrum of PAN ͑that is, the spectrum of the upper layer minus that of the lower layer͒.…”

Section: Resultsmentioning

confidence: 85%

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Influence of Salt Content on Polymer Dissolution and Ionic Association in Polymer Electrolyte

Wang

Gao

Huang

et al. 2001

Electrochem. Solid-State Lett.

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Polymer electrolytes composed of polyacrylonitrile, propylene carbonate ͑PC͒, and lithium bis͑trifluoromethane sulfone imide͒ ͑LiTFSI, LiN͑CF 3 SO 2 ͒ 2 ͒ have been prepared and studied by Raman spectroscopy. The polymer cannot be dissolved in PC before all the PC molecules are associated with LiTFSI. As long as the polymer is dissolved in PC, the microstructures related to PC do not vary with the salt content, while the interaction between the Li ϩ ion and the polymer in the polymer electrolyte is striking.

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Section: Resultsmentioning

confidence: 85%

“…This is similar to the characteristics of the microstructures in the LiClO 4 -based polymer electrolytes that have been spectroscopically investigated in this laboratory. [8][9][10] However, in comparison to other polymer electrolytes, there is no free PC molecule in the present polymer electrolyte.…”

Section: Resultsmentioning

confidence: 99%

Influence of Salt Content on Polymer Dissolution and Ionic Association in Polymer Electrolyte

Wang

Gao

Huang

et al. 2001

Electrochem. Solid-State Lett.

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“…In Figure 2(a), line 2 shows a shoulder at around 2260 cm À1 as a result of interaction between the Li þ cations and CBN groups. 17,18 This is attributed to the formation of an associate involving the pair of unbonded electron on the nitrogen atom of the CBN groups and the Li þ cations. In Figure 2(b), line 2 shows that the absorbance band of the carbonyl oxygen shifts to a lower frequency, and the change in the stretching region of the carbonyl oxygen may be expected because of the coordination of the Li þ ions to the unbonded electrons of the oxygen and the existence of ClO 4 À , which may lead to the weakening of the C¼ ¼O bond as Li þ complex with ether oxygen, which has been reported in other studies.…”

Section: Ftir Andmentioning

confidence: 98%

Dual‐phase polymer electrolytes based on blending poly(MMA‐g‐NBR) and PMMA

Yang

Yuan

et al. 2007

J of Applied Polymer Sci

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A new type dual-phase polymer electrolyte (DPE) based on poly(MMA-g-NBR) and poly(methyl methacrylate) (PMMA) was prepared by film-casting method. In the DPE, PMMA phase is selectively impregnated with the lithium salt solution, forming an ion-conducting network, while poly(MMA-g-NBR) phase maintains mechanical strength in the system. With grafting effect, the compatibility of two phases (PMMA/poly(MMA-g-NBR)) can be enhanced obviously. The chemical and physical characteristics, morphology and ionic conductivity behavior of DPEs, and their interfacial stability between lithium metal electrode were characterized by using of FTIR, 1 HMNR, DSC, SEM, optical microscopic images, AC impedance, and linear sweep voltammetry. A new type DPE with good mechanics and high electrochemistry properties is obtained at an optimum proportion of two blending polymers.

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“…The infrared spectra of these materials vary according to their composition and may be able to show the occurrence of complexation [17][18][19][20][21][22] and interaction between the various constituents. The interaction between polymers, salt and plasticizer can induce change in the vibrational modes of the atoms or molecules in the material, which in turn change the physical and chemical properties of the constituents of the complex.…”

Section: Xrd Analysismentioning

confidence: 99%

Ionic conduction in plasticized PVC/PAN blend polymer electrolytes

Rajendran

Babu

Sivakumar³

2007

Ionics

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Blended polymer electrolytes with poly(vinyl chloride) (PVC)-poly(acrylonitrile) (PAN) were prepared with different plasticizer concentrations and constant lithium perchlorate (LiClO 4 ) ratio by the solution-casting technique. The structure and complexation of the prepared films were studied by X-ray diffraction and Fourier transform infrared spectroscopy. The effect of the plasticizer on the ionic conduction in these electrolytes was investigated using alternating current impedance measurement and discussed. The temperature-dependant ionic conductivity was carried out in the range 302-373 K. The prepared films were also examined by thermogravimetry/differential thermal analysis to determine their thermal stability.

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Investigation of the position of Li+ ions in a polyacrylonitrile-based electrolyte by Raman and infrared spectroscopy

Cited by 92 publications

References 12 publications

Influence of Salt Content on Polymer Dissolution and Ionic Association in Polymer Electrolyte

Influence of Salt Content on Polymer Dissolution and Ionic Association in Polymer Electrolyte

Dual‐phase polymer electrolytes based on blending poly(MMA‐g‐NBR) and PMMA

Ionic conduction in plasticized PVC/PAN blend polymer electrolytes

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