eprintid: 16475
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/64/75
datestamp: 2023-12-19 03:22:59
lastmod: 2023-12-19 03:22:59
status_changed: 2023-12-19 03:06:19
type: article
metadata_visibility: show
creators_name: Ullah, S.
creators_name: Shamraiz, U.
creators_name: Elizbit, 
creators_name: Badshah, A.
creators_name: Raza, B.
creators_name: Farooqi, A.S.
creators_name: Tofil, H.M.
creators_name: Zeb, M.A.
creators_name: Alfantazi, A.
title: Sulfur enriched cobalt-based layered double hydroxides for oxygen evolution reactions
ispublished: pub
keywords: Electrocatalysis; High resolution transmission electron microscopy; Oxygen; Positive ions; Sulfur; X ray photoelectron spectroscopy, Cation and anion substitution; Co-precipitation; Cobalt-based; High current densities; Layered Structures; Layered-double hydroxides; One-step methods; Simple++; Synthesised; Water oxidation, Cobalt compounds
note: cited By 9
abstract: Sulfur and zinc substituted Co(OH)2 is synthesized by a simple co-precipitation one-step method followed by solvothermal treatment for oxygen evolution reaction. The high-resolution X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) demonstrates that the Zn and S substitution significantly stabilizes the layered structure and causes an increase in the electron density around the Co center. The role of both cation and anion substitution is evaluated to enhance the oxygen evolution reactions. This enhanced activity is due to the in-situ oxidation of divalent Co into trivalent Co, and partially due to the stabilization of the layered structure, as highlighted by PXRD and TEM analysis, the gap between the layers is slightly reduced from 7.8 à to 7.5 à , for S�Zn�Co(OH)2. The in-situ conversion of Co2+ to Co3+ during electrocatalysis improved the OER electrocatalysis. The structural and physical characterizations are performed via XRD, EDX, SEM, TEM, XPS, AFM and BET. © 2021 Hydrogen Energy Publications LLC
date: 2022
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116910891&doi=10.1016%2fj.ijhydene.2021.09.201&partnerID=40&md5=8a64c6352ad90960a4d1f5e5aa03b740
id_number: 10.1016/j.ijhydene.2021.09.201
full_text_status: none
publication: International Journal of Hydrogen Energy
volume: 47
number: 72
pagerange: 30799-30809
refereed: TRUE
issn: 03603199
citation:   Ullah, S. and Shamraiz, U. and Elizbit and Badshah, A. and Raza, B. and Farooqi, A.S. and Tofil, H.M. and Zeb, M.A. and Alfantazi, A.  (2022) Sulfur enriched cobalt-based layered double hydroxides for oxygen evolution reactions.  International Journal of Hydrogen Energy, 47 (72).  pp. 30799-30809.  ISSN 03603199