Using Pegylated Graphene Oxide to Achieve High Performance Solid Polymer Electrolyte Based on Poly

Solid polymer electrolytes (SPEs) have emerged as a promising avenue for developing flexible lithium-ion batteries. However, the low ionic conductivity of polymers remains a primary challenge that has been the subject of intensive research efforts in recent years. In this work, polyethylene oxide (P...

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Bibliographic Details
Published inPolymers Vol. 15; no. 14
Main Authors Eslami, Behnam, Ghasemi, Ismaeil, Esfandeh, Masoud
Format Journal Article
LanguageEnglish
Published MDPI AG 01.07.2023
Subjects
Batteries
Calorimetry
Diffraction
Electric properties
Ethylene oxide
Founding
Graphene
Graphite
Lithium compounds
Polyelectrolytes
Polyethylene glycol
Polymer industry
Polyols
X-rays
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Summary:Solid polymer electrolytes (SPEs) have emerged as a promising avenue for developing flexible lithium-ion batteries. However, the low ionic conductivity of polymers remains a primary challenge that has been the subject of intensive research efforts in recent years. In this work, polyethylene oxide (PEO), polyvinyl alcohol, lithium perchlorate (LiClO[sub.4]), and graphene functionalized with polyethylene glycol (FGO) have been used to prepare SPE/FGO electrolytes by casting solution technique. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) confirmed the reduction of SPE crystals and the increase of amorphous phases. The results demonstrated that the presence of functionalized graphene had an effective role in reducing crystallinity. Furthermore, the thermal and mechanical stability of the samples were corroborated through thermogravimetric analysis (TGA) and tensile tests, respectively. Notably, the samples exhibited adequate ionic conductivity at room temperature, with the highest ionic conductivity of 5.2 × 10[sup.−5] S·cm[sup.−1] observed for 2%wt of FGO in SPE (SPE/FGO(2)).
ISSN:2073-4360
2073-4360
DOI:10.3390/polym15143063