Prajapati, Megha, Ravi Kant, Chhaya, Hussain, Aasim, and Jacob, Mohan V. (2024) Hierarchical NiCo-LDH layered composite on PANI coated Ni foam for highly efficient supercapattery applications. New Journal of Chemistry, 48. pp. 18376-18391.

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Abstract

Supercapatteries combine the high-power density characteristic of supercapacitors with the high energy density typically found in batteries, offering a promising solution for advanced energy storage applications. We present an efficient two-step method to fabricate hierarchical, binder-free NiCo layered double hydroxide (LDH) nanosheet arrays supported on polyaniline layered nickel foam (NF). A PANI@NiCo-LDH/NF nanocomposite serves as the anode in the supercapattery, leveraging the high capacitance and improved conductivity of the combined materials, yielding a significantly high specific capacity of 1481 C g−1 (3703.33 F g−1). Coffee grounds derived reduced graphene oxide (rGO), providing a sustainable and environmentally friendly material with excellent electrical conductivity and high mechanical strength, serves as the cathode. The synergy between the PANI@NiCo-LDH/NF anode and the rGO cathode creates a novel and highly efficient supercapattery system. The fabricated supercapattery device offers an energy density of 54.44 W h kg−1 at a power density of 0.702 kW kg−1 and exhibits good cyclability with capacitance retention of 84.88% and Coulombic efficiency of 77.68% over 5000 charging/discharging cycles. This innovative approach addresses the limitations of traditional energy storage devices, paving the way for more versatile and sustainable energy solutions.

Item ID:	85370
Item Type:	Article (Research - C1)
ISSN:	1369-9261
Copyright Information:	© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2024.
Date Deposited:	06 May 2025 23:51
FoR Codes:	34 CHEMICAL SCIENCES > 3406 Physical chemistry > 340604 Electrochemistry @ 50% 40 ENGINEERING > 4008 Electrical engineering > 400804 Electrical energy storage @ 50%
SEO Codes:	17 ENERGY > 1703 Energy storage, distribution and supply > 170399 Energy storage, distribution and supply not elsewhere classified @ 100%
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