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Kajian sifat elektrokimia dan teraksi kimia elektrolit polimer pepejal berasaskan PVdF-HFP/ENR50-LiTf

Siti Aminah Mohd Noor, Nor Shafika Ramli, Mohd Sukor Su'ait, Lee Tian Khoon, Azizan Ahmad

Abstract


Elektrolit polimer pepejal (EPP) yang terdiri daripada pengadunan PVdF-HFP dan ENR50 sebagai polimer induk dan LiTf sebagai garam pendopan telah disediakan dengan menggunakan teknik pengacuanan larutan. Kesan peratusan berat garam LiTf terhadap sifat elektrokimia iaitu kekonduksian ion dan kestabilan kimia serta perubahan dan interaksi kimia bagi elektrolit polimer pepejal berasaskan PVdF-HFP/ENR50-LiTf telah dikaji. Filem EPP ini dicirikan menggunakan spektroskopi inframerah tranform Fourier-pantulan penuh (ATR-FTIR) bagi menentukan interaksi kimia yang berlaku, manakala spektroskopi impedan elektrokimia (EIS), nombor angkutan ion (Tn) dan voltametri kitaran (CV) digunakan untuk mengkaji kekonduksian ion dan kestabilan kimia EPP yang terhasil. Interaksi kimia di antara kumpulan berfungsi C-F dan ion litium di dalam sampel dapat dikesan dengan melakukan analisis inframerah. Analisis EIS menunjukkan kekonduksian ion yang paling optimum adalah pada 25 % berat garam iaitu 4.61 x10-5 S cm-1. Analisis nombor angkutan ion menentukan jumlah ion yang bergerak dalam EPP dan nilai Tion yang diperolehi adalah  0.997.


Keywords


Elektrolit polimer pepejal (EPP), getah asli terepoksida, PVdF-HFP, LiTf

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References


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