Studies on the effect of H+ carrier toward ionic conduction properties in alginate-ammonium sulfate complexes–based polymer electrolytes system

• Main Authors: Nurhasniza, M Khan, Noor M, Norman, Ahmad, S Samsudin
• Format: Article
• Language: English; English
• Published: SAGE Publications Ltd 2022
• Subjects: T Technology (General); TP Chemical technology
• Online Access: http://umpir.ump.edu.my/id/eprint/37742/1/Studies%20on%20the%20effect%20of%20H%2B%20carrier%20toward%20ionic%20conduction.pdf; http://umpir.ump.edu.my/id/eprint/37742/2/Studies%20on%20the%20effect%20of%20H%2B%20carrier%20toward%20ionic%20conduction%20properties%20in%20alginate-ammonium%20sulfate%20complexes%E2%80%93based%20polymer%20electrolytes%20system.pdf; http://umpir.ump.edu.my/id/eprint/37742/; https://doi.org/10.1177/09540083221075320

The present work highlights the contribution of ammonium sulfate (NH4)2SO4 as H+ carriers in alginate-based solid polymer electrolytes (SPEs) that were successfully prepared via a solution casting technique. The Fourier transform infrared analysis revealed that molecular interactions between the host polymer and the ionic dopant complexes occurred at the wavenumbers 3700–2500 cm-1, 1800–1500 cm-1, and 1200–900 cm-1. These regions corresponded to the O-H stretching, COO− and C-O-C, moieties of alginate, respectively, which coordinated with the H+ carrier from (NH4)2SO4. At ambient temperature, the optimum ionic conductivity was obtained at 3.01 × 10−5 S cm-1 for the sample containing 10 wt.% of (NH4)2SO4. The IR-deconvolution approach shows that the ionic conduction enhancement is governed by the ionic mobility and the diffusion coefficient of H+ carriers, and the findings show that the present biopolymer, which is an alginate-based SPEs system, has an excellent possibility to be used as electrolytes for application in electrochemical devices