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Hydrothermally/electrochemically decorated FeSe on Ni-foam electrode: An efficient bifunctional electrocatalysts for overall water splitting in an alkaline medium

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dc.contributor.author Chanda, D.
dc.contributor.author Tufa, R.A.
dc.contributor.author Birdja, Y.Y.
dc.contributor.author Basu, S.
dc.contributor.author Liu, S.H.
dc.date.accessioned 2023-07-28T05:00:28Z
dc.date.available 2023-07-28T05:00:28Z
dc.date.issued 2020
dc.identifier.citation International Journal of Hydrogen Energy, 45(51), 2020: 27182-27192
dc.identifier.issn 0360-3199
dc.identifier.uri http://ore.immt.res.in/handle/2018/2787
dc.description.abstract A new hybrid catalyst based on Ni foam (NF) and FeSe was prepared by a facial hydrothermal method, in which Se-decorated NF was subsequently electrochemically doped by Fe. Binder-free catalyst containing electrodes were directly tested for the hydrogen and oxygen evolution reaction (HER/OER). The FeSe/NF electrode displayed an OER current density of 100 mA cm(-2) at potential of 1.42 V, and a relatively small Tafel slope of 109 mV dec(-1) in a 1 M KOH solution. Also, FeSe/NF electrode exhibited reasonable HER overpotential of 200 mV at 10 mAcm(-2) current density with Tafel slope of 145 mV dec(-1). The XRD and TEM studies revealed that the formation of heterogeneous interfaces of NiSe2 and FeSe2, generated more active sites that can promote better ions and electron transport in the electrode/electrolyte interfaces. Furthermore, HRTEM analysis indicates that FeSe2 rich in Se vacancy defects can be created with suitable M - O and M - H bond for better OER and HER performance, respectively. In a-two electrode alkaline water electrolyzer, current densities of 10 mA cm(-2) and 50 mA cm(-2) were obtained at cell voltages of 1.52 V and 1.85 V, respectively, using pure FeSe-NF as both the cathode and anode. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.language en
dc.publisher Elsevier
dc.relation.isreferencedby SCI
dc.rights Copyright [2020]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject Chemical Sciences
dc.subject Electrochemistry
dc.subject Energy & Fuels
dc.title Hydrothermally/electrochemically decorated FeSe on Ni-foam electrode: An efficient bifunctional electrocatalysts for overall water splitting in an alkaline medium
dc.type Journal Article
dc.affiliation.author Henan Univ, Kaifeng 47504, Peoples R China


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