Title

Direct Vapor Deposition Growth of 1T′ MoTe2 on Carbon Cloth for Electrocatalytic Hydrogen Evolution

RIS ID

140840

Publication Details

Lu, D., Ren, X., Ren, L., Xue, W., Liu, S., Liu, Y., Chen, Q., Qi, X. & Zhong, J. (2019). Direct Vapor Deposition Growth of 1T′ MoTe2 on Carbon Cloth for Electrocatalytic Hydrogen Evolution. ACS Applied Energy Materials,

Abstract

© 2019 American Chemical Society. Phase engineering has a profound effect on the chemical bonding and electric configuration, which play significant roles in regulating the activities of catalysts. The metallic phases of transition-metal dichalcogenides (TMDs) have been proposed to show more excellent performance in electrocatalysis over their semiconductor phase; however, the controllable phase engineering for these compounds remains a challenge. In this work, filmlike 1T′ MoTe2 (F-1T′ MoTe2), filmlike 1T′/2H MoTe2, porous 1T′ MoTe2, small granular 1T′ MoTe2, and large granular 1T′ MoTe2 were successfully synthesized on a flexible carbon cloth (CC) substrate with 3D network structure by chemical vapor deposition (CVD). The high activity of the as-synthesized F-1T′ MoTe2/CC electrode for HER in 1 M H2SO4 solution was demonstrated by the small onset overpotential of -230.7 mV, a low Tafel slope of 127.1 mV dec-1, and robust electrochemical durability. The enhanced electrocatalytic activity and stability of F-1T′ MoTe2/CC benefit from excellent catalytically active sites and remarkable conductivity of the F-1T′ MoTe2. The results demonstrate an efficient route to designing and constructing metallic-phase TMD catalysts for high-performance electrocatalytic devices.

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Link to publisher version (DOI)

http://dx.doi.org/10.1021/acsaem.9b01589