Characteristics of Glycerolized Chitosan: NH4NO3-Based Polymer Electrolyte for Energy Storage Devices with Extremely High Specific Capacitance and Energy Density Over 1000 Cycles

Polymers

卷:12

M.H. Hamsan¹  M.F. Z. Kadir¹  S.R. Majid²  Iver Brevik³  ShujahadeenB. Aziz⁴  SarkawtA. Hussen⁴  RebarT. Abdulwahid⁴  RanjdarM. Abdullah⁴  M.A. Brza⁵ 

[1] Centre for Foundation Studies in Science, University of Malaya, Kuala Lumpur 50603, Malaysia;

[2] Centre for Ionics, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia;

[3] Department of Energy and Process Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway;

[4] Hameed Majid Advanced Polymeric Materials Research Lab., Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Kurdistan Regional Government, Iraq;

[5] Manufacturing and Materials Engineering Department, Faculty of Engineering, International Islamic University of Malaysia, Gombak, Kuala Lumpur 50603, Malaysia;

关键词: biopolymer electrolyte;    XRD study;    impedance spectroscopy;    ion transport parameters;    TNM and LSV measurement;    energy storage;   

DOI  :  10.3390/polym12112718

来源: DOAJ

【 摘 要 】

In this work, plasticized polymer electrolyte films consisting of chitosan, ammonium nitrate (NH₄NO₃) and glycerol for utilization in energy storage devices was presented. Various microscopic, spectroscopic and electrochemical techniques were used to characterize the concerned electrolyte and the electrical double-layer capacitor (EDLC) assembly. The nature of complexation between the polymer electrolyte components was examined via X-ray diffraction analysis. In the morphological study, field emission scanning electron microscopy (FESEM) was used to investigate the impact of glycerol as a plasticizer on the morphology of films. The polymer electrolyte (conducting membrane) was found to have a conductivity of 3.21 × 10⁻³ S/cm. It is indicated that the number density (n), mobility (μ) and diffusion coefficient (D) of ions are increased with the glycerol amount. The mechanism of charge storing was clarified, which implies a non-Faradaic process. The voltage window of the polymer electrolyte is 2.32 V. It was proved that the ion is responsible for charge-carrying via measuring the transference number (TNM). It was also determined that the internal resistance of the EDLC assembly lay between 39 and 50 Ω. The parameters associated with the EDLC assembly are of great importance and the specific capacitance (C_spe) was determined to be almost constant over 1 to 1000 cycles with an average of 124 F/g. Other decisive parameters were found: energy density (18 Wh/kg) and power density (2700 W/kg).

【 授权许可】

Unknown