Journal
ADVANCED COMPOSITES AND HYBRID MATERIALS
Volume 5, Issue 1, Pages 356-369Publisher
SPRINGERNATURE
DOI: 10.1007/s42114-021-00371-5
Keywords
Two-dimensional nanomaterials; MXene; Electrochemical performance; N doping
Funding
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX20_3131]
- Zhenjiang Key Laboratory of Marine Functional Thin Film Materials High Technology Research [ZHZ2019008]
- National Natural Science Foundation of China [21975260, 51402132]
- Jiangsu Government Scholarship for Overseas Studies [JS-2016-136]
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A new type of N-doped MXene nanomaterial was prepared from non-toxic biological chitosan and MXene as a potential electrode for supercapacitors, showing high specific capacitance and excellent stability after 10,000 charge and discharge cycles. This was attributed to the lone pair of electrons of the N atom and increased interlayer distance in the N-doped MXene.
Chitosan (CS) rich in similar to 7 wt% nitrogen is the renewable nontoxic biomass material derived from seafood waste. Chitosan is a suitable precursor to obtain N-doped materials due to the nitrogen in acetamide and amine of chitosan. In this work, the new type of N-doped MXene nanomaterials is prepared from non-toxic biological chitosan and MXene using a simple, environment-friendly method as a potential electrode for supercapacitor. The specific capacitance of 1MXene-1N reaches up to 286.28 F/g (154.59 C/g). After 10,000 charge and discharge cycles, the efficiency is always above 98%. The N-doped MXene turned out to be high electrochemistry and excellent stability due to the lone pair of electrons of the N atom and increased interlayer distance.
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