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Flexible freestanding MoS2-based composite paper for energy conversion and storage
- Source :
- Beilstein Journal of Nanotechnology, Vol 10, Iss 1, Pp 1488-1496 (2019), Beilstein Journal of Nanotechnology, Beilstein journal of nanotechnology 10, 1488-1496 (2019). doi:10.3762/bjnano.10.147
- Publication Year :
- 2019
- Publisher :
- Beilstein-Institut, 2019.
-
Abstract
- The construction of flexible electrochemical devices for energy storage and generation is of utmost importance in modern society. In this article, we report on the synthesis of flexible MoS2-based composite paper by high-energy shear force milling and simple vacuum filtration. This composite material combines high flexibility, mechanical strength and good chemical stability. Chronopotentiometric charge–discharge measurements were used to determine the capacitance of our paper material. The highest capacitance achieved was 33 mF·cm−2 at a current density of 1 mA·cm−2, demonstrating potential application in supercapacitors. We further used the material as a cathode for the hydrogen evolution reaction (HER) with an onset potential of approximately −0.2 V vs RHE. The onset potential was even lower (approximately −0.1 V vs RHE) after treatment with n-butyllithium, suggesting the introduction of new active sites. Finally, a potential use in lithium ion batteries (LIB) was examined. Our material can be used directly without any binder, additive carbon or copper current collector and delivers specific capacity of 740 mA·h·g−1 at a current density of 0.1 A·g−1. After 40 cycles at this current density the material still reached a capacity retention of 91%. Our findings show that this composite material could find application in electrochemical energy storage and generation devices where high flexibility and mechanical strength are desired.Keywords: flexible composites; hydrogen evolution reaction (HER); lithium ion batteries (LIBs); molybdenum disulfide; nanoarchitectonics; supercapacitors
- Subjects :
- Materials science
hydrogen evolution reaction (HER)
Composite number
General Physics and Astronomy
02 engineering and technology
010402 general chemistry
lcsh:Chemical technology
01 natural sciences
Capacitance
lcsh:Technology
Energy storage
Full Research Paper
law.invention
law
Energy transformation
Nanotechnology
General Materials Science
lcsh:TP1-1185
molybdenum disulfide
nanoarchitectonics
Electrical and Electronic Engineering
Composite material
lcsh:Science
lithium ion batteries (LIBs)
Supercapacitor
supercapacitors
lcsh:T
Current collector
021001 nanoscience & nanotechnology
Cathode
lcsh:QC1-999
0104 chemical sciences
flexible composites
Nanoscience
lcsh:Q
ddc:620
0210 nano-technology
Current density
lcsh:Physics
Subjects
Details
- Language :
- English
- ISSN :
- 21904286
- Volume :
- 10
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Beilstein Journal of Nanotechnology
- Accession number :
- edsair.doi.dedup.....b85653269e352b69b61a91f9cbbd541a