TEA Guiding Bimetallic MOF with Oriented Nanosheet Arrays for High-Performance Asymmetric Supercapacitors

The development of supercapacitors with ultrahigh power density, high energy density, and compatible integration for wearable microelectronic devices is significant but challenging. Herein, a bimetallic metal-organic framework (Ni/Co-MOF) with oriented nanosheets was obtained via triethylamine (TEA)...

Full description

Saved in:
Bibliographic Details
Published in:Polymers 2024-11, Vol.16 (22), p.3198
Main Authors: Mao, Xiling, Liu, Hao, Niu, Tingting, Yan, Xinyu, Li, Mengwei
Format: Article
Language:English
Subjects:
Activated carbon
Adsorption
Arrays
Asymmetry
Bimetals
Capacitors
Decomposition
Electrodes
Electrolytes
Energy storage
Hydrothermal treatment
Medicine, Botanic
Medicine, Herbal
Metal-organic frameworks
Nanosheets
Nitrates
Polyvinyl alcohol
Pore size
Storage capacity
Supercapacitors
Triethylamine
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The development of supercapacitors with ultrahigh power density, high energy density, and compatible integration for wearable microelectronic devices is significant but challenging. Herein, a bimetallic metal-organic framework (Ni/Co-MOF) with oriented nanosheets was obtained via triethylamine (TEA) guiding using a hydrothermal treatment, in which the TEA guides the vertically oriented array structures of the Ni/Co-MOF and ensures a fast ion/electron transmission path. Subsequently, an asymmetric supercapacitor was rationally designed by applying the bimetallic MOF cathode and an activated carbon (AC) anode. The obtained Ni/Co-MOF sample offers a high storage capacity of 2034 F g at 0.5 A g by harnessing the optimized Ni/Co-MOF with uniformly oriented nanosheet arrays. The constructed asymmetric supercapacitors exhibited a large voltage window of 1.4 V in 3.0 M KOH and an outstanding energy density of 29.5 Wh kg at a power density of 199.1 W kg was obtained, with a remarkable capacitance retention of 89% after 2000 cycles.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym16223198