Amorphous molybdenum sulfide on graphene–carbon nanotube hybrids as supercapacitor electrode materials. Issue 12 (20th January 2017)

• Record Type: Journal Article
• Authors: Pham, Kien-Cuong; McPhail, David S.; Wee, Andrew T. S.; Chua, Daniel H. C.
• Is Part Of: RSC advances. Volume 7:Issue 12(2017)
• Page Start: 6856
• Page End: 6864
• Publication Date: 2017-01-20
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra27901e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Deposition of amorphous molybdenum sulfide on a high specific surface area carbon support strongly enhanced the specific capacitance of the material. Abstract : Herein, we report the application of amorphous molybdenum sulfide (MoS x, x ≈ 3) as the main active material for supercapacitor electrodes. MoS x was deposited at room temperature onto a high specific surface area electrode made of graphene–carbon nanotube hybrids directly grown on carbon paper (GCNT/CP), using an electrochemical deposition method. The MoS x /GCNT/CP electrode showed high specific capacitance. A gravimetric specific capacitance of 414 F g −1 was demonstrated at a constant discharge rate of 0.67 A g −1 . The deposition of MoS x onto a conductive, high surface area support played a crucial role for a high specific capacitance. An up to 4.5-fold enhancement in specific capacitance was demonstrated when MoS x was deposited on GCNT/CP as compared to MoS x deposited on a simple carbon paper support. The MoS x /GCNT/CP electrode is suggested to be a novel candidate for supercapacitor applications.