Impact of KNO3 Concentration on Structural Properties, Dielectric and AC Conductivity Response of 80 PEO:20 PVDF Blend Polymer Electrolytes

被引:4
作者
Katuri, Rayudu [2 ]
Jeedi, Venkata Ramana [1 ]
Prakash, A. Chandra [5 ]
Ganta, Kiran Kumar [1 ]
Yalla, Malla Reddy [3 ]
Kundana, N. [4 ]
机构
[1] B V Raju Inst Technol, Dept Phys, Medak 502313, Telangana, India
[2] B V Raju Inst Technol, Dept Elect & Elect Engn, Medak 502313, Telangana, India
[3] Osmania Univ, Univ PG Coll, Dept Phys, Secunderabad 502313, Telangana, India
[4] B V Raju Inst Technol, Dept Chem, Medak 502313, Telangana, India
[5] Inst Aeronaut Engn, Hyderabad 500043, India
关键词
Polymer electrolyte; Ionic conductivity; Dielectric response; AC conductivity; Polymer blends; LI-ION BATTERIES; STANDARD POTENTIALS; NA-ION; TRANSPORT; SILVER; PLASTICIZER; RELAXATION; NANOFILLER; WATER; SALT;
D O I
10.1007/s11814-024-00148-8
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Due to the limited availability and unequal distribution of lithium resources, a thorough investigation into the viability and financial feasibility of using lithium as a long-term, sustainable solution has been initiated. Our work was focused to prepare the solid polymer electrolyte systems using solvent cast technique and the ionic conductivity, dielectric properties were studied using impedance spectroscopy from 1 Hz to 10 MHz at various temperatures. XRD (X-ray diffractogram) and FTIR (Fourier transform infrared) characterization techniques have been carried out to confirm the electrolytes' complexation and functional groups, respectively. Morphological study and thermal analysis have been studied using SEM (scanning electron microscopy) and DSC (differential scanning calorimetry). The dielectric response of the samples was examined through dielectric constant (epsilon '), dielectric loss (epsilon ''), modulus (M ' and M '') and relaxation time (tau). The electrical properties of polymer electrolytes complexed with salt concentration were changed remarkably. The ionic conductivity of KNO3-complexed polymer electrolytes has been enhanced and the maximum ionic conductivity (3.19x10(-5) S/cm) was noticed for 3 wt% of KNO3 which could be attributed to high dissociation and maximum movement of ions.
引用
收藏
页码:1093 / 1104
页数:12
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