Izvorni znanstveni članak
https://doi.org/10.5599/jese.1381
Char of Tagetes erecta (African marigold) flower as a potential electrode material for supercapacitors
Venkata Naga Kanaka Suresh Kumar Nersu
; Department of Instrument Technology, Andhra University College of Engineering (A), Visakhapatnam, Andhra Pradesh 530003, India
Bhujanga Rao Annepu
; Department of Instrument Technology, Andhra University College of Engineering (A), Visakhapatnam, Andhra Pradesh 530003, India
Subhakaran Singh Rajaputra
; Centre for Advanced Energy Studies, Koneru Lakshmaiah Education Foundation, Vaddeswaram, AP, India
Satya Srinivasa Babu Patcha
; Center for Flexible Electronics, Department of Electronics and Communication Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, AP, India
Sažetak
A char of Tagetes erecta flowers (TFC) was derived through simple thermal decomposition of Tagetes erecta flowers (TF). Physico-chemical properties of as-prepared TFC were evaluated using XRD, FESEM, FTIR, TGA, N2 adsorption-desorption isotherm analysis and water contact angle measurements. The practicality and applicability of TFC as promising electrode material in supercapacitors (SCs) were evaluated in full-cell configuration by performing electrochemical characterizations like CV, GCD and EIS on a lab-scale TFC-based symmetric SC. TFC exhibited a remarkable specific capacitance of 118.4 F g-1 at a constant current density of 0.2 A g-1 and a specific energy of 4.1 Wh kg-1 at specific power of 0.1 kW kg-1. TFC showed excellent cyclic stability by retaining 92 % of its initial capacitance even after 6000 GCD cycles at 2 A g-1. The superior capacitive behaviour and cyclic stability of TFC could be attributed to its good wettability towards water. This excellent supercapacitive performance of TFC establishes it as a potential floral waste-derived carbon-based electrode material for SCs.
Ključne riječi
Biochar; gel polymer electrolyte; flower waste; electric double layer capacitor (EDLC); carbon cloth; hydrophilicity
Hrčak ID:
283705
URI
Datum izdavanja:
18.9.2022.
Posjeta: 401 *