Enhancing Distorted Metal Organic Framework Derived ZnO as Anode Material for Lithium Storage by the Addition of Ag2S Quantum Dots.
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
The lithium storage properties of the distorted metal-organic framework (MOF) derived nanosized ZnO@C are significantly improved by the introduction of Ag2S quantum dots (QDs) during the processing of the material. In the thermal treatment, the Ag2S QDs react to produce Ag nanoparticles and ZnS. The metal nanoparticles act to shorten electron pathways and improve the connectivity of the matrix and the partial sulfidation of the ZnO surface improves the cycling stability of the material. The electrochemical properties of ZnO@C, Ag2S QDs treated ZnO@C and the amorphous carbon in ZnO@C have been compared. The small weight ratio of Ag2S QDs to ZnO@C at 1:180 shows the best performance in lithium storage. The exhibited specific capacities are improved and retained remarkably in the cycling at high current rates. At low current densi-ties (200 mA g-1) treatment of ZnO@C with Ag2S QDs results in a 38% increase in the specific capacity.
Date Issued
2017-10-12
Date Acceptance
2017-10-12
Citation
ACS Applied Materials and Interfaces, 2017, 9 (43), pp.37823-37831
ISSN
1944-8244
Publisher
American Chemical Society
Start Page
37823
End Page
37831
Journal / Book Title
ACS Applied Materials and Interfaces
Volume
9
Issue
43
Copyright Statement
Copyright © 2017 American Chemical Society
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/K503381/1
Subjects
Science & Technology
Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Science & Technology - Other Topics
Materials Science
distorted MOFs
ZnO
ZnS
sulfidation
lithium storage
ION BATTERIES
SENSING PROPERTIES
PERFORMANCE
CARBON
CAPABILITY
HYBRIDS
ARRAYS
MOF-5
0904 Chemical Engineering
0303 Macromolecular And Materials Chemistry
0306 Physical Chemistry (Incl. Structural)
Publication Status
Published