Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 21, Issue 22, Pages 11829-11838Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cp02536g
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Funding
- Management of Bishop Heber College (Autonomous), Tiruchirappalli, Tamil Nadu, India through the DST-FIST Instrumentation Centre at Bishop Heber College (HAIF)
- DST [SR/WOS-A/CS-22/2016]
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A new, prominently stable organic material, l-tryptophanium picrate, was synthesized via a one-step process. The as-prepared sample was characterized by UV-visible, FT-IR, Raman, TGA-DSC, XRD, FE-SEM, EDX, H-1-NMR, C-13-NMR and GC-MS. The significant capacitive behaviour of l-tryptophanium picrate was investigated by cyclic voltammetric studies (CV), galvanostatic charge-discharge tests and impedance spectroscopy techniques in 1 M aqueous KOH. The newly fabricated l-tryptophanium picrate electrode material exhibited an excellent specific capacitance of 263 F g(-1) at a current density of 1 A g(-1). Furthermore, it exhibited a capacitance retention of about 92% even after 2000 consecutive charge/discharge cycles. Moreover, the as-prepared electrode material illustrated electrochemically reversible behaviour. In addition, the synthesized material showed good electrochemical performance under the selected potential window. Thus, the fabricated electrode was proved to be a promising alternate electrode for high performance energy storage applications.
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