Porous VN nanosheet arrays on MXene carbon fibers for flexible supercapacitors.

Authors :: Zhang D
Wang D
Feng B
Cheng J
Yan H
Chang J
Wang Z
Chu PK
Luo Y
Source :: Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2024 Jul 18; Vol. 60 (59), pp. 7590-7593. Date of Electronic Publication: 2024 Jul 18.
Publication Year :: 2024
Abstract: VN usually has poor rate performance and cycle stability. In this work, porous VN nanosheet arrays were prepared on carbon nanofibers embedded with Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript> x </subscript> nanosheets by electrospinning and chemical vapor deposition. The 3D network accelerates the transfer of electrons and electrolyte ions, prevents the aggregation of VN and the self-stacking of MXene, and enhances cycle stability. The solid-state flexible device comprising Co <subscript>3</subscript> O <subscript>4</subscript> , MXCF@VN, and KOH/PVA exhibits exceptional energy densities of 83.95 W h kg <superscript>-1</superscript> and robust cycling stability (82.8% retention after 20 000 cycles).