Porous VN nanosheet arrays on MXene carbon fibers for flexible supercapacitors

Zhang, Deyang; Wang, Di; Feng, Binhe; Cheng, Jinbing; Yan, Hailong; Chang, Jin; Wang, Zhaorui; Chu, Paul K.; Luo, Yongsong

doi:10.1039/d4cc02182g

Chem. Commun.

2024

DOI: 10.1039/d4cc02182g

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Porous VN nanosheet arrays on MXene carbon fibers for flexible supercapacitors

Deyang Zhang,

Di Wang,

Binhe Feng

et al.

Abstract: Porous VN was grown on MXene-coated carbon fibers by vapor deposition. The 3D network can prevent the accumulation of VN/MXene and accelerate ion/electron transport. Porous VN provides more active sites and improves specific capacitance.

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Vertically Aligned Ultrathin CoNi-LDH@NiS@MXCF Core–Shell Heterostructure for Flexible Supercapacitor Electrodes and Oxygen Evolution Reaction

Zhang,

Wang,

Feng

et al. 2024

Inorg. Chem.

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A multilayer core−shell heterostructure with CoNi-LDH as the core and NiS nanosheets as the shell is deposited on MXene-coated carbon nanofibers by electrospinning and electrochemical deposition. This unique structure not only combines highly conductive and hydrophilic one-dimensional carbon nanofibers but also exposes abundant two-dimensional reactive sites and multiple ion diffusion channels to maximize material utilization, enhance electron transfer kinetics, accelerate Faraday reaction, high capacitance and strong stability. The CNNS@MXCF electrode exhibits outstanding electrochemical characteristics, including a capacity of 1441.8 F g −1 at a current density of 1 A g −1 and excellent cycling stability. The CNNS@MXCF//VN@MXCF device shows a high energy density of 84.4 Wh kg −1 at 0.8 kW kg −1 power density, with nearly 92% capacitance retention after 10,000 cycles (30 A g −1 ). In addition, the oxygen evolution reaction (OER) shows a small overpotential of 128 mV, confirming the versatility and large potential of the materials and strategy.

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Vertically Aligned Ultrathin CoNi-LDH@NiS@MXCF Core–Shell Heterostructure for Flexible Supercapacitor Electrodes and Oxygen Evolution Reaction

Zhang,

Wang,

Feng

et al. 2024

Inorg. Chem.

View full text Add to dashboard Cite

show abstract

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Porous VN nanosheet arrays on MXene carbon fibers for flexible supercapacitors

Abstract: Porous VN was grown on MXene-coated carbon fibers by vapor deposition. The 3D network can prevent the accumulation of VN/MXene and accelerate ion/electron transport. Porous VN provides more active sites and improves specific capacitance.

Cited by 1 publication

References 34 publications

Vertically Aligned Ultrathin CoNi-LDH@NiS@MXCF Core–Shell Heterostructure for Flexible Supercapacitor Electrodes and Oxygen Evolution Reaction

Vertically Aligned Ultrathin CoNi-LDH@NiS@MXCF Core–Shell Heterostructure for Flexible Supercapacitor Electrodes and Oxygen Evolution Reaction

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