TY  - JOUR
AU  - Zoller, Florian
AU  - Luxa, Jan
AU  - Bein, Thomas
AU  - Fattakhova-Rohlfing, Dina
AU  - Bouša, Daniel
AU  - Sofer, Zdeněk
TI  - Flexible freestanding MoS 2 -based composite paper for energy conversion and storage
JO  - Beilstein journal of nanotechnology
VL  - 10
SN  - 2190-4286
CY  - Frankfurt, M.
PB  - Beilstein-Institut zur Förderung der Chemischen Wissenschaften
M1  - FZJ-2019-03991
SP  - 1488 - 1496
PY  - 2019
AB  - 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
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000476926400002
DO  - DOI:10.3762/bjnano.10.147
UR  - https://juser.fz-juelich.de/record/864084
ER  -