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Nickel-adsorbed two-dimensional Nb2C MXene for enhanced energy storage applications

Owing to the tremendous energy storage capacity of two-dimensional transition metal carbides (MXenes), they have been efficiently utilized as a promising candidate in the field of super-capacitors. The energy storage capacity of MXenes can be further enhanced using metal dopants. Herein, we have rep...

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Published in:RSC advances 2022-02, Vol.12 (8), p.4624-4634
Main Authors: Zaheer, Ayesha, Syedah Afsheen Zahra, Iqbal, Muhammad Z, Mahmood, Asif, Khan, Salem Ayaz, Syed Rizwan
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container_issue 8
container_start_page 4624
container_title RSC advances
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creator Zaheer, Ayesha
Syedah Afsheen Zahra
Iqbal, Muhammad Z
Mahmood, Asif
Khan, Salem Ayaz
Syed Rizwan
description Owing to the tremendous energy storage capacity of two-dimensional transition metal carbides (MXenes), they have been efficiently utilized as a promising candidate in the field of super-capacitors. The energy storage capacity of MXenes can be further enhanced using metal dopants. Herein, we have reported the synthesis of pristine and nickel doped niobium-carbide (Nb2C) MXenes, their computational and electrochemical properties. Upon introduction of nickel (Ni) the TDOS increases and a continuous DOS pattern is observed which indicates coupling between Ni and pristine MXene. The alterations in the DOS, predominantly in the nearby region of the Fermi level are profitable for our electrochemical applications. Additionally, the Ni-doped sample shows a significant capacitive performance of 666.67 F g−1 which can be attributed to the additional active sites generated by doping with Ni. It is worth noting that doped MXenes exhibited a capacitance retention of 81% up to 10 000 cycles. The current study unveils the opportunities of using MXenes with different metal dopants and hypothesize on their performance for energy storage devices.
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subjects Chemistry
Density of states
Dopants
Electrochemical analysis
Energy storage
Metal carbides
MXenes
Nickel
Niobium carbide
Storage capacity
Transition metals
title Nickel-adsorbed two-dimensional Nb2C MXene for enhanced energy storage applications
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