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Updated: Dec 21, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
High rate capable and high energy supercapacitor performance of reduced graphene oxide/Al(OH)3/polyaniline
Aranganathan Viswanathan1, M Gururaj Acharya1, Adka Nityananda Shetty1
1Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Srinivasanagar, Mangalore 575025, India.
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)3/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 (Cs) with increase in No. of energy storage/delivery cycles. After 41,500 cycles the GAlP82 exhibited a Cs 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 Cs up to 10 A g-1 before cyclic stability study and 33% of Cs up to 23 A g-1 after 41,500 cycles; and all these impressive performances are achieved from the symmetric supercapacitor cell of GAlP82.
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