Zn-BTC MOF as Self-Template to Hierarchical ZnS/NiS2 Heterostructure with Improved Electrochemical Performance for Hybrid Supercapacitor

Zn-BTC (H3BTC refers to 1, 3, 5-benzoic acid) MOF was used as a self-template and a zinc source to prepare ZnS/NiS2 with a layered heterogeneous structure as a promising electrode material using cation exchange and solid-phase vulcanization processes. The synergistic effect of the two metal sulfides...

Full description

Saved in:
Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2024-01, Vol.14 (1), p.22
Main Authors: Li, Xuan, Liu, Lingran, Tu, Chengyu, Zhang, Quan, Yang, Xinchun, Kolokolov, Daniil I., Maltanava, Hanna, Belko, Nikita, Poznyak, Sergey, Samtsov, Michael, Guo, Haixin, Wu, Shuping, Zhu, Maiyong
Format: Article
Language:English
Subjects:
Activated carbon
Benzoic acid
Capacitance
Carbon
Cation exchange
Cation exchanging
Charge transfer
Electrochemical analysis
Electrochemistry
Electrode materials
Electrodes
Electrons
Ethanol
Heterogeneous structure
heterostructure
Heterostructures
metal organic framework
metal sulfide
Metal sulfides
Metal-organic frameworks
Microscopy
Morphology
Nanoparticles
Nickel
Nitrates
Reaction kinetics
Redox reactions
Retention
Solid phases
Sulfur
supercapacitor
Synergistic effect
Vulcanization
Zinc sulfide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Zn-BTC (H3BTC refers to 1, 3, 5-benzoic acid) MOF was used as a self-template and a zinc source to prepare ZnS/NiS2 with a layered heterogeneous structure as a promising electrode material using cation exchange and solid-phase vulcanization processes. The synergistic effect of the two metal sulfides enhances the application of ZnS/NiS2. And the high specific surface area and abundant active sites further promote the mass/charge transfer and redox reaction kinetics. In the three-electrode system, the specific capacitance was as high as 1547 F/g at a current density of 1 A/g, along with satisfactory rate capability (1214 F/g at 6 A/g) and cycling performance. Coupled with activated carbon (AC), the prepared hybrid device (ZnS/NiS2 as the positive electrode and AC as the negative electrode) (ZnS/NiS2/AC) can be operated under a potential window of 1.6 V and provides a high energy density of 26.3 Wh/kg at a power density of 794 W/kg. Notably, the assembled ZnS/NiS2//AC showed little capacity degradation after 5000 charge/discharge cycles.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano14010022