Highly Active Mo2C@WS2 Hybrid Electrode for Enhanced Hydrogen Evolution Reaction

Catalysts

Manzoor Hussain¹  Dhanasekaran Vikraman²  Hyun-Seok Kim²  Jongwan Jung³  Sajjad Hussain³ 

[1] Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Korea;Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea;Hybrid Materials Center (HMC), Sejong University, Seoul 05006, Korea;

关键词: TMC;    TMD;    Mo₂C@WS₂;    HER;    H₂SO₄;    KOH;   

DOI  :  10.3390/catal11091060

来源: DOAJ

【 摘 要 】

Transition metal dichalcogenides (TMDs) are the auspicious inexpensive electrocatalysts for the hydrogen evolution reaction (HER) which has been broadly studied owing to their remarkable enactment, however the drought of factors understanding were highly influenced to hinder their electrocatalytic behavior. Recently, transition metal carbide (TMC) has also emerged as an attractive electrode material due to their excellent ionic and electronic transport behavior. In this work, Mo₂C@WS₂ hybrids have been fabricated through a simple chemical reaction method. Constructed heterostructure electrocatalyts presented the small Tafel slope of 59 and 95 mV per decade and low overpotential of 93 mV and 98 @10 mA·cm⁻² for HER in acidic and alkaline solution, respectively. In addition, 24-h robust stability with the improved interfacial interaction demonstrated the suitability of hybrid electrocatalyst for HER than their pure form of Mo₂C and WS₂ structures. The derived outcomes describe the generated abundant active sites and conductivity enhancement in TMC/TMD heterostructure along with the weaken ion/electron diffusion resistance for efficient energy generation applications.

【 授权许可】

Unknown