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Facile synthesis of g-C3N4/LDH self-growing nanosheet arrays for enhanced supercapacitor performance by Hengrui Qiu; Qian Ma; Xuejiao Sun; Xiaoxing Han; Guixiao Jia; Yongqiang Zhang; Wenxiu He is a Materials Science article available to read on EtoBox.

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This work reports the high performance of NiCo-layered double hydroxide (NiCo-LDH) self-growing nanosheet arrays decorated with graphitic carbon nitride (g-C 3 N 4 ) as a potential electrode material for supercapacitor. The composite is prepared by a convenient microwave method and its electrochemical behavior is evaluated. In three electrode system, the graphitic carbon nitride-NiCo-layered double hydroxide (CN-LDH) electrode exhibits high specific capacitance of 1936.36 F g -1 at 1 A g -1 . The results show that adding a certain amount of g-C 3 N 4 to LDH can significantly increase the specific capacitance of the electrode. In addition, the electrochemical performances of the electrode are further studied by Density functional theory (DFT) calculations and capacitance contribution fitting, which provides theoretical assistance for the elaborated electrochemical performance and reaction kinetics. Meanwhile, the possible reaction mechanisms are explained from two aspects of current density and scan rate, which revealed a reference idea for the future recombination of g-C 3 N 4 . The supercapacitor is assembled to verify the practical application of the CN-LDH electrode, CN-LDH//AC

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Author

Hengrui Qiu; Qian Ma; Xuejiao Sun; Xiaoxing Han; Guixiao Jia; Yongqiang Zhang; Wenxiu He

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)