High rate capable and high energy supercapacitor performance of reduced graphene oxide/Al(OH)3/polyaniline nanocomposite
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
Academic Press Inc.
Abstract
The high rate capable, high energy (higher than the lead acid batteries & Nickel-cadmium batteries and comparable with Li-ion batteries) and long lasting supercapacitive performance was achieved from a ternary nanocomposite of rGO/Al(OH)<inf>3</inf>/PANI (5.88%:11.77%:82.85%) (GAlP82). The GAlP82 exhibited high cyclic stability till 47,500 cycles at 400 mV s?1, with increasing trend of specific capacitance (C<inf>s</inf>) with increase in No. of energy storage/delivery cycles. After 41,500 cycles the GAlP82 exhibited a C<inf>s</inf> of 490.19 F g?1, an energy density (E) of 98.03 W h kg?1 and a power density (P) of 2.2829 kW kg?1 at 1 A g?1. The GAlP82 exhibited a good rate capability by retaining 73% of C<inf>s</inf> up to 10 A g?1 before cyclic stability study and 33% of C<inf>s</inf> up to 23 A g?1 after 41,500 cycles; and all these impressive performances are achieved from the symmetric supercapacitor cell of GAlP82. © 2020 Elsevier Inc.
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Keywords
Capacitance, Cesium, Energy storage, Graphene, Lithium-ion batteries, Nickel cadmium batteries, Reduced Graphene Oxide, Supercapacitor, Cyclic stability, Energy density, High cyclic stabilities, Long lasting, Power densities, Rate capabilities, Specific capacitance, Ternary nanocomposites, Lead acid batteries, acid, aluminum, cadmium, glass, graphene oxide, graphite, lead, lithium ion, nanochannel, nanocomposite, nickel, nitrogen, oxygen, polyaniline, sodium ion, sulfur, Article, conductance, controlled study, cyclic voltammetry, deconvolution, electric conductivity, energy, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, oxidation, oxidation reduction reaction, particle size, reduction (chemistry)
Citation
Journal of Colloid and Interface Science, 2020, 575, , pp. 377-387