Shape-Assisted 2D MOF/Graphene Derived Hybrids as Exceptional Lithium-Ion Battery Electrodes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73595038" target="_blank" >RIV/61989592:15310/19:73595038 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201902539" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201902539</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adfm.201902539" target="_blank" >10.1002/adfm.201902539</a>
Alternative languages
Result language
angličtina
Original language name
Shape-Assisted 2D MOF/Graphene Derived Hybrids as Exceptional Lithium-Ion Battery Electrodes
Original language description
Herein, a novel polymer-templated strategy is described to obtain 2D nickel-based MOF nanosheets using Ni(OH)(2), squaric acid, and polyvinylpyrrolidone (PVP), where PVP has a dual role as a structure-directing agent, as well as preventing agglomeration of the MOF nanosheets. Furthermore, a scalable method is developed to transform the 2D MOF sheets to Ni7S6/graphene nanosheet (GNS) heterobilayers by in situ sulfidation using thiourea as a sulfur source. The Ni7S6/GNS composite shows an excellent reversible capacity of 1010 mAh g(-1) at 0.12 A g(-1) with a Coulombic efficiency of 98% capacity retention. The electrochemical performance of the Ni7S6/GNS composite is superior not only to nickel sulfide/graphene-based composites but also to other metal disulfide-based composite electrodes. Moreover, the Ni7S6/GNS anode exhibits excellent cycle stability (approximate to 95% capacity retention after 2000 cycles). This outstanding electrochemical performance can be attributed to the synergistic effects of Ni7S6 and GNS, where GNS serves as a conducting matrix to support Ni7S6 nanosheets while Ni7S6 prevents restacking of GNS. This work opens up new opportunities in the design of novel functional heterostructures by hybridizing 2D MOF nanosheets with other 2D nanomaterials for electrochemical energy storage/conversion applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Functional Materials
ISSN
1616-301X
e-ISSN
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Volume of the periodical
29
Issue of the periodical within the volume
38
Country of publishing house
DE - GERMANY
Number of pages
11
Pages from-to
"1902539-1"-"1902539-11"
UT code for WoS article
000479344400001
EID of the result in the Scopus database
2-s2.0-85069926047