Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 169, Issue 2, Pages -Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1945-7111/ac4d6a
Keywords
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Funding
- Indian Institute of Technology Madras (IITM) and Ministry of Human Resources and Development (MHRD), Government of India
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This study focuses on the development of a flexible electrode based on carbon cloth-carbon fiber-TiO2 (CC-CF-TiO2) and its electrochemical performance in various electrolytes. The highest areal capacitance of 270 mF cm(-2) was achieved in 1 M H2SO4 aqueous electrolyte, and a full-cell flexible supercapacitor with hydrogel polymer electrolyte demonstrated excellent energy and power densities.
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-TiO2 (CC-CF-TiO2) 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-TiO2 flexible electrode in 1 M H2SO4 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 mu Wh cm(-2) and 418.48 mu 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.
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