Exploring the potential of poly (caprolactone) and guar gum biodegradable blend film: an investigation for supercapacitor

Abstract A biodegradable polymer electrolyte comprising poly (caprolactone) (PCL) and guar gum (GG) doped with lithium perchlorate (LiClO 4 ) was investigated for its application in supercapacitors. The films’ thermal properties, surface morphology, and tensile strength were determined to understand...

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Bibliographic Details
Published in:Materials research express 2024-05, Vol.11 (5), p.55303
Main Authors: Sumana, V S, Sudhakar, Y N, Nagaraja, G K, M B, Savitha, P, Prasad
Format: Article
Language:English
Subjects:
biodegradable
Biodegradation
Electrolytes
Guar gum
Lithium perchlorates
poly (caprolactone)
polymer electrolyte
Polymer films
Polymers
supercapacitor
Supercapacitors
Tensile strength
Thermodynamic properties
Time constant
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Summary:Abstract A biodegradable polymer electrolyte comprising poly (caprolactone) (PCL) and guar gum (GG) doped with lithium perchlorate (LiClO 4 ) was investigated for its application in supercapacitors. The films’ thermal properties, surface morphology, and tensile strength were determined to understand the interaction between the blend system and the salt. Scanning electron microscopic images showed a network of GG channels across the polymer matrix. A unique combo of THF/water as solvent was used for this study as they bring out relaxation in GG segments and compatibility between GG and PCL. The blend polymer electrolyte (BPE) was characterized using conductivity, dielectric, and biodegradation studies. Supercapacitors were fabricated, and electrochemical studies were performed. The optimized BPE was used to fabricate supercapacitors, producing a specific capacitance of 125 F g −1 . The time constant was measured at 0.8 s, and a consistent cyclic pattern was observed during galvanostatic charge/discharge studies with 96% Coulombic efficiency. This novel amalgamation of polymeric films holds immense promise for supercapacitor applications.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/ad4199