Mo2C-MoS2 heterojunction a suitable and stable electrocatalyst for HER and supercapacitor Applications. Issue 1 (1st May 2022)

• Record Type: Journal Article
• Authors: Ahmad Mir, Rameez; Upadhyay, Sanjay; Kaur, Navpreet; Pandey, O.P.
• Is Part Of: Journal of physics. Volume 2267:Issue 1(2022)
• Publication Date: 2022-05-01
• Subjects: Heterojunction -- Mo2C-MoS2 -- Water splitting -- HER -- Supercapacitors; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/2267/1/012118
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: In the present work, Mo2 C-MoS2 heterojunction structures have been prepared by the wet impregnation method. For heterojunction species, the content of MoS2 was varied from 5 to 20% by weight. The effect of the loading content of MoS2 over Mo2 C on hydrogen evolution reaction (HER) activity and electrochemical (EC) capacitance performance has been studied in detail. The Mo-C-S junction plays a key role in enhancing the HER activity and EC capacitance performance than the individual components. The prepared structures show enhanced HER activity with high current density ~36.2-78.3 mAcm -2 at very low applied potential (0.45 V), exhibiting a lower Tafel slope of 102.4 mVdec -1 . The EC capacitor performance determined by CV and galvanic charge-discharge (GCD) reveals that the synthesized samples exhibit an electrochemical double-layer capacitor (EDLC, Cdl ) behavior. The higher EDLC (43.9 mFcm -2 ) and specific capacitance (2Fg -1 ) obtained for the synthesized samples determine their potential applicability for the new generation supercapacitors.