TY  - JOUR
A1  - Quan, Ting
A1  - Goubard-Bretesche, Nicolas
A1  - Haerk, Eneli
A1  - Kochovski, Zdravko
A1  - Mei, Shilin
A1  - Pinna, Nicola
A1  - Ballauff, Matthias
A1  - Lu, Yan
T1  - Highly Dispersible Hexagonal Carbon-MoS2-Carbon Nanoplates with Hollow Sandwich Structures for Supercapacitors
JF  - Chemistry - a European journal
N2  - MoS2, a typical layered transition-metal dichalcogenide, is promising as an electrode material in supercapacitors. However, its low electrical conductivity could lead to limited capacitance if applied in electrochemical devices. Herein, a new nanostructure composed of hollow carbon-MoS2-carbon was successfully synthesized through an L-cysteine-assisted hydrothermal method by using gibbsite as a template and polydopamine as a carbon precursor. After calcination and etching of the gibbsite template, uniform hollow platelets, which were made of a sandwich-like assembly of partial graphitic carbon and two-dimensional layered MoS2 flakes, were obtained. The platelets showed excellent dispersibility and stability in water, and good electrical conductivity due to carbon provided by the calcination of polydopamine coatings. The hollow nanoplate morphology of the material provided a high specific surface area of 543 m(2) g(-1), a total pore volume of 0.677 cm(3) g(-1), and fairly small mesopores (approximate to 5.3 nm). The material was applied in a symmetric supercapacitor and exhibited a specific capacitance of 248 F g(-1) (0.12 F cm(-2)) at a constant current density of 0.1 Ag-1; thus suggesting that hollow carbon-MoS2 carbon nanoplates are promising candidate materials for supercapacitors.
KW  - carbon
KW  - chalcogens
KW  - electrochemistry
KW  - nanostructures
KW  - supercapacitors
Y1  - 2019
U6  - https://doi.org/10.1002/chem.201806060
SN  - 0947-6539
SN  - 1521-3765
VL  - 25
IS  - 18
SP  - 4757
EP  - 4766
PB  - Wiley-VCH
CY  - Weinheim
ER  -