Improved electrochemical activity from Ru doped WS2nanosheet catalyst

Pamula Siva, Kuraganti Vasu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Two-dimensional layered materials (MoS2 and WS2) are well-known semiconductors and possess interesting physical properties. The nanostructures of these materials with active edge sites exhibit excellent electrocatalytic activity in acidic and alkaline conditions. Transition metal doping is one great research strategy that made the advancement of electrocatalytic behavior layered semiconductors. Here, the investigations on the electrochemical activity towards HER and supercapacitor studies of Ru doped WS2 nanosheets are presented. XRD analysis reveals that the Ru doped WS2 nanosheets exhibit a 2H-hexagonal crystal structure with evidence Ru was successfully incorporated in the WS2 crystal lattice. It is found that the HER overpotential of the catalyst is decreased with increasing Ru content and reaches the value 103 mV (at 10mA/cm2) for 12 at% of Ru from 186 mV of undoped WS2. Further, the electrochemical double layer capacitance of WS2 is increased with Ru content and the best catalyst of 12 at% of Ru possesses 33.04 mF/cm2 specific capacitance. Clearly, Ru doping has a beneficial effect on the electrocatalytic activity of WS2 nanosheets.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
EditorsAjay Kumar Mishra, Mohit Tyagi, D. V. Udupa, Sanjeeb Kumar Rout
PublisherAmerican Institute of Physics Inc.
Edition1
ISBN (Electronic)9780735447646
DOIs
StatePublished - 12 Jan 2024
Externally publishedYes
Event66th DAE Solid State Physics Symposium, DAE-SSPS 2022 - Ranchi, India
Duration: 18 Dec 202222 Dec 2022

Publication series

NameAIP Conference Proceedings
Number1
Volume2995
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference66th DAE Solid State Physics Symposium, DAE-SSPS 2022
Country/TerritoryIndia
CityRanchi
Period18/12/2222/12/22

ASJC Scopus subject areas

  • General Physics and Astronomy

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