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Rahmawati M
Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Chemistry

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SINTESIS MEMBRAN POLIMER ELEKTROLIT DARI BAHAN POLI(VINIL ALKOHOL) DENGAN LITIUM HIDROKSIDA(LiOH) SEBAGAI SUMBER ELEKTROLITNYA Rahmawati M
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2014
Publisher : PROSIDING SEMINAR KIMIA

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Electrolyte polymer membranes were synthesized by solution cast method. Fabrication of polymer electrolyte memb ranes done by using the polymer poly (vinyl alcohol)(PVA) and Lithiu m Hydro xide (LiOH) as the source of the electrolyte. PVA dissolved in distilled water while heated at 50 0 C for 2 hours. For preparing LiOH solution, the same procedure as for PVA solution were heated for an hour. Futhermore, PVA solution and LiOH solution were mixed wh ile stirred and heated at 50 0 C for one hour.Then, the mixture solution was evaporated for 2 days which ultimately resulted in a thin sheet-transparent membrane. The perfo rmance of poly mer electro lyte membrane PVA -LiOH characterized by physical properties and conductivity analysis using Electrochemical Impedance Spectroscopy (EIS). The maximum measurement results and conductivity values obtained in 9% concentration of LiOH, reach 2.48 x10 -4 S.cm -1 .
PENGARUH PENAMBAHAHAN PARTIKEL MAGNETIK Fe 3 O 4 TERHADAP PENINGKATAN KONDUKTIVITAS MEMBRAN POLIMER ELEKTROLIT (PVA – LiOH) Rahmawati M
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2013
Publisher : PROSIDING SEMINAR KIMIA

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Electrical conductivity of electrolyte polymer PVA.LiOH with nanoparticle Fe 3 O 4 dispersion result show a significant increase when compared to electrolyte polymer without nanoparticle Fe 3 O 4 . The electrolyte polymer PVA.LiOH electrical conductivity with nanoparticle Fe 3 O 4 reach 1,18 x 10 -3 Scm -1 orde, while without nanoparticle Fe 3 O 4 the electrical conductivity reach 2,48 x 10 -4 Scm -1 orde. This indicates an increase of amorphous phase after magnetic particle Fe 3 O 4 addition. The existence of magnetic nanoparticle Fe 3 O 4 can effectively increase the amorphous fraction of electrolyte polymer PVA.LiOH and magnetic properties carried by Fe 3 O 4 a new potential in development of electrolyte polymer.
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