Phosphorus-doped carbon nitride for enhanced supercapacitor performance and energy storage applications

Subburaj, Surender, Thomas, Shalini, Kavipriyah, M.N. and Subramanian, Balakumar 2024. Phosphorus-doped carbon nitride for enhanced supercapacitor performance and energy storage applications. Inorganic Chemistry Communications 170 (Part1) , 113266. 10.1016/j.inoche.2024.113266 Item availability restricted.

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Abstract

Exploiting the advantages of graphitic carbon nitride doped with phosphorus (xP-CN) electrodes were designed for high-performance hybrid asymmetric supercapacitor via facile hydrothermal and thermal decomposition techniques. The structural, surface chemistry, functional and morphological characterizations evidence depict successful phosphorus incorporation in Carbon Nitride (CN). X-ray photoelectron spectroscopy analysis shows that phosphorus (P) atoms have replaced corner carbon atoms in the CN structure. These findings clearly demonstrate that the presence of phosphorus doping improves the electrochemical activity of the electrodes. The designed three-electrode system has a specific capacitance of 189.36 F/g with a current density of 1 A/g. Phosphorus doping has been discovered to play a significant role in improving both specific capacitance and cycling stability. The capacitance retention of the two-electrode solid-state device has 97.2 % after 5000 cycles. These electrochemical evaluations reveal that the xP-CN electrode exhibits superior electrochemical performances than pristine CN. This doping strategy for CN presents a novel and efficient approach for crafting high-performance supercapacitors.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	1387-7003
Date of First Compliant Deposit:	17 December 2024
Date of Acceptance:	29 September 2024
Last Modified:	17 Dec 2024 09:30
URI:	https://orca.cardiff.ac.uk/id/eprint/174602

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