Solid-State EDLC Device Based on Magnesium Ion-Conducting Biopolymer Composite Membrane Electrolytes: Impedance, Circuit Modeling, Dielectric Properties and Electrochemical Characteristics
Ahmad S. F. M. Asnawi,
Shujahadeen B. Aziz,
Salah R. Saeed,
Yuhanees M. Yusof,
Rebar T. Abdulwahid,
Shakhawan Al-Zangana,
Wrya O. Karim,
Mohd. F. Z. Kadir
Affiliations
Ahmad S. F. M. Asnawi
Chemical Engineering Section, Universiti Kuala Lumpur Malaysian Institute of Chemical & Bioengineering Technology (UniKL MICET), Alor Gajah 78000, Malacca, Malaysia
Shujahadeen B. Aziz
Hameed majid Advanced Polymeric Materials Research Lab., Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Iraq
Salah R. Saeed
Charmo Research Center, Charmo University, Peshawa Street, Chamchamal, Sulaimani 46001, Iraq
Yuhanees M. Yusof
Chemical Engineering Section, Universiti Kuala Lumpur Malaysian Institute of Chemical & Bioengineering Technology (UniKL MICET), Alor Gajah 78000, Malacca, Malaysia
Rebar T. Abdulwahid
Hameed majid Advanced Polymeric Materials Research Lab., Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Iraq
Shakhawan Al-Zangana
Department of Physics, College of Education, University of Garmian, Kalar 46021, Iraq
Wrya O. Karim
Department of Chemistry, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Iraq
Mohd. F. Z. Kadir
Centre for Foundation Studies in Science, University of Malaya, Kuala Lumpur 50603, Malaysia
The polymer electrolyte based on Dx:Cs:Mg(CH3COO)2:Ni with three different glycerol concentrations have been prepared. The impedance study has verified that the electrolyte with 42 wt.% of glycerol (A3) has the highest ionic conductivity of 7.71 × 10−6 S cm−1 at room temperature. The ionic conductivity is found to be influenced by the transport parameters. From the dielectric analysis, it was shown that the electrolytes in this system obeyed the non-Debye behavior. The A3 electrolyte exhibited a dominancy of ions (tion > te) with a breakdown voltage of 2.08 V. The fabricated electrochemical double layer capacitor (EDLC) achieved the specific capacitance values of 24.46 F/g and 39.68 F/g via the cyclic voltammetry (CV) curve and the charge–discharge profile, respectively. The other significant parameters to evaluate the performance of EDLC have been determined, such as internal resistance (186.80 to 202.27 Ω) energy density (4.46 Wh/kg), power density (500.58 to 558.57 W/kg) and efficiency (92.88%).
