Advanced pseudocapacitive performances of a Ti3C2Tx-ZnOHF/ZnO nanocomposite for energy storage applications
Author(s)
Type
Journal Article
Abstract
The growing demand for efficient and high-performance energy storage systems is driving the exploration of novel materials and composites. Traditional electrode materials often face limitations in terms of energy and power densities. This paper demonstrates novel spray-coated cathode electrode system composed of Ti3C2Tx MXene and zinc hydroxy fluoride/zinc oxide (ZnOHF/ZnO) nanostars (NSs) for energy storage applications in a neutral pH electrolyte. Optimized Ti3C2Tx-NSs electrodes exhibited superior specific capacitance, achieving 236 F g−1 at 5 mV s−1 in cyclic voltammetry (CV) and 139 F g−1 at 5 mV s−1 in galvanostatic charge-discharge (GCD) measurements, which is superior to bare Ti3C2Tx (115 F g−1 at 0.5 A g−1) and bare NSs (108 F g−1 at 0.5 F g−1) electrodes, used as reference. Additionally, an asymmetric Ti3C2Tx||Ti3C2Tx-NSs supercapacitor device achieved a specific capacitance of 147 F g−1 at 0.5 A g−1, an energy density Ed ~ 46 W h kg−1 at a power density Pd ~ 875 W kg−1, and the highest Pd ~ 16650 W kg−1 at Ed ~ 14 W h kg−1. These findings demonstrate that ZnO NSs combined with delaminated Ti3C2Tx MXene, hold a significant promise for efficient energy storage applications, leveraging the synergy between double-layer capacitance and pseudocapacitive effects.
Date Issued
2024-06-06
Date Acceptance
2025-06-05
Citation
ChemSusChem: chemistry and sustainability, energy and materials, 2024
ISSN
1864-5631
Publisher
Wiley
Journal / Book Title
ChemSusChem: chemistry and sustainability, energy and materials
Copyright Statement
© 2025 Wiley-VCH GmbH
Identifier
10.1002/cssc.202500024
Subjects
(zinc oxide nanostars
MXenes
two-dimensional materials
energy storage
supercapacitors
high-performance capacitors
neutral pH)
Publication Status
Published online
Article Number
e202500024
Date Publish Online
2025-06-06