Enhancement on protonation (H+) with incorporation of flexible ethylene carbonate in CMC–PVA–30 wt % NH4NO3 film. (13th May 2021)

• Record Type: Journal Article
• Authors: Saadiah, M.A.; Nagao, Y.; Samsudin, A.S.
• Is Part Of: International journal of hydrogen energy. Volume 46:Number 33(2021)
• Page Start: 17231
• Page End: 17245
• Publication Date: 2021-05-13
• Subjects: Polymer blend -- Physicochemical properties -- Conductivity -- H+ transport; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.02.187
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In the present work, carboxymethyl cellulose (CMC)– polyvinyl alcohol (PVA)– NH4 NO3 with the addition of ethylene carbonate (EC) based polymer blend electrolyte (PBE) was explored. The complexes of PBE with addition of EC revealed that an interaction of the –OH and –COO − of the CMC–PVA blend with the dissociation of H + from NH4 NO3 provides a flexibility pathway for ion hopping. The optimum ionic conductivity at room temperature was found to be 3.92 × 10 −3 S/cm for the sample containing 6 wt.% EC with an increment of amorphous phase and thermal stability. Based on the Impedance-Nyquist theoretical approach, it was shown that the ionic conductivity with cation transference number ( t H + = 0.48) of the PBE is primarily influenced by the ionic mobility as well as the ions diffusion coefficient. The findings verified that the CMC–PVA–NH4 NO3 –EC possesses favorable conduction properties upon physical structural modification as a promising polymer electrolyte. Graphical abstract: Image 1 Highlights: A polymer electrolytes has been prepared using CMC–PVA–NH4 NO3 with various content of EC. EC substituent significantly increase the dissociation NH4 + -- NO3 in polymer complexes. The H + ions contributes to the enhancement of ionic conductivity (~10 −3 S/cm). Ionic transport via Nyquist fitting method corroborates with the trend of ionic conductivity.