Open AccessHigh Areal Capacitance of Flexible Supercapacitors Fabricated with Carbon Cloth-Carbon Fiber-TiO2 Electrodes and Different Hydrogel Polymer Electrolytes
Author(s) -
Sundara Ramaprabhu,
Mamta Sham Lal
Publication year - 2022
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac4d6a
Subject(s) - supercapacitor , electrolyte , capacitance , materials science , electrode , power density , electrochemistry , energy storage , nanotechnology , chemical engineering , polymer , carbon fibers , composite material , chemistry , power (physics) , physics , quantum mechanics , composite number , engineering
Developing suitable electrode material and electrolyte is critical for fabricating a flexible supercapacitor with large areal capacitance. Furthermore, the compatibility between electrode material and electrolyte is essential. Herein, a carbon cloth-carbon fiber-TiO 2 (CC–CF–TiO 2 ) based flexible electrode is designed and developed for the first time and tested electrochemically in various electrolytes. More importantly, the electrochemical studies performed in both half-cell and full-cell studies are discussed. The highest areal capacitance of 270 mF cm −2 is realized for CC–CF–TiO 2 flexible electrode in 1 M H 2 SO 4 aqueous electrolyte at 10 mA cm −2 current density. Full-cell flexible supercapacitor fabricated with hydrogel polymer electrolyte demonstrates the maximum energy density and power density as 4.56 μ Wh cm −2 and 418.48 μ W cm −2 respectively. The attained values are highly encouraging in comparison to the old reports. The results obtained in this work demonstrate the potential of our fabricated flexible supercapacitor for next-generation wearable energy storage applications.