▎ 摘　　要

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 (C-s) with increase in No. of energy storage/delivery cycles. After 41,500 cycles the GAlP82 exhibited a C-s 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-s up to 10 A g(-1) before cyclic stability study and 33% of C-s up to 23 A g(-1) after 41,500 cycles; and all these impressive performances are achieved from the symmetric supercapacitor cell of GAlP82. (C) 2020 Elsevier Inc. All rights reserved.