Amorphous NiFe-OH/NiFeP Electrocatalyst Fabricated at Low Temperature for Water Oxidation Applications

Handle URI:
http://hdl.handle.net/10754/625981
Title:
Amorphous NiFe-OH/NiFeP Electrocatalyst Fabricated at Low Temperature for Water Oxidation Applications
Authors:
Liang, Hanfeng ( 0000-0002-1778-3975 ) ; Gandi, Appala; Xia, Chuan ( 0000-0003-4526-159X ) ; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Anjum, Dalaver H.; Schwingenschlögl, Udo ( 0000-0003-4179-7231 ) ; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
Water splitting driven by electricity or sunlight is one of the most promising ways to address the global terawatt energy needs of future societies; however, its large-scale application is limited by the sluggish kinetics of the oxygen evolution reaction (OER). NiFe-based compounds, mainly oxides and hydroxides, are well-known OER catalysts and have been intensively studied; however, the utilization of the synergistic effect between two different NiFe-based materials to further boost the OER performance has not been achieved to date. Here, we report the rapid conversion of NiFe double hydroxide into metallic NiFeP using PH3 plasma treatment and further construction of amorphous NiFe hydroxide/NiFeP/Ni foam as efficient and stable oxygen-evolving anodes. The strong electronic interactions between NiFe hydroxide and NiFeP significantly lower the adsorption energy of H2O on the hybrid and thus lead to enhanced OER performance. As a result, the hybrid catalyst can deliver a geometrical current density of 300 mA cm–2 at an extremely low overpotential (258 mV, after ohmic-drop correction), along with a small Tafel slope of 39 mV decade–1 and outstanding long-term durability in alkaline media.
KAUST Department:
Materials Science and Engineering Program; Imaging and Characterization Core Lab
Citation:
Liang H, Gandi AN, Xia C, Hedhili MN, Anjum DH, et al. (2017) Amorphous NiFe-OH/NiFeP Electrocatalyst Fabricated at Low Temperature for Water Oxidation Applications. ACS Energy Letters 2: 1035–1042. Available: http://dx.doi.org/10.1021/acsenergylett.7b00206.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Energy Letters
Issue Date:
11-Apr-2017
DOI:
10.1021/acsenergylett.7b00206
Type:
Article
ISSN:
2380-8195; 2380-8195
Sponsors:
Research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acsenergylett.7b00206
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorLiang, Hanfengen
dc.contributor.authorGandi, Appalaen
dc.contributor.authorXia, Chuanen
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorSchwingenschlögl, Udoen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2017-10-30T08:39:48Z-
dc.date.available2017-10-30T08:39:48Z-
dc.date.issued2017-04-11en
dc.identifier.citationLiang H, Gandi AN, Xia C, Hedhili MN, Anjum DH, et al. (2017) Amorphous NiFe-OH/NiFeP Electrocatalyst Fabricated at Low Temperature for Water Oxidation Applications. ACS Energy Letters 2: 1035–1042. Available: http://dx.doi.org/10.1021/acsenergylett.7b00206.en
dc.identifier.issn2380-8195en
dc.identifier.issn2380-8195en
dc.identifier.doi10.1021/acsenergylett.7b00206en
dc.identifier.urihttp://hdl.handle.net/10754/625981-
dc.description.abstractWater splitting driven by electricity or sunlight is one of the most promising ways to address the global terawatt energy needs of future societies; however, its large-scale application is limited by the sluggish kinetics of the oxygen evolution reaction (OER). NiFe-based compounds, mainly oxides and hydroxides, are well-known OER catalysts and have been intensively studied; however, the utilization of the synergistic effect between two different NiFe-based materials to further boost the OER performance has not been achieved to date. Here, we report the rapid conversion of NiFe double hydroxide into metallic NiFeP using PH3 plasma treatment and further construction of amorphous NiFe hydroxide/NiFeP/Ni foam as efficient and stable oxygen-evolving anodes. The strong electronic interactions between NiFe hydroxide and NiFeP significantly lower the adsorption energy of H2O on the hybrid and thus lead to enhanced OER performance. As a result, the hybrid catalyst can deliver a geometrical current density of 300 mA cm–2 at an extremely low overpotential (258 mV, after ohmic-drop correction), along with a small Tafel slope of 39 mV decade–1 and outstanding long-term durability in alkaline media.en
dc.description.sponsorshipResearch reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acsenergylett.7b00206en
dc.titleAmorphous NiFe-OH/NiFeP Electrocatalyst Fabricated at Low Temperature for Water Oxidation Applicationsen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalACS Energy Lettersen
kaust.authorLiang, Hanfengen
kaust.authorGandi, Appalaen
kaust.authorXia, Chuanen
kaust.authorHedhili, Mohamed N.en
kaust.authorAnjum, Dalaver H.en
kaust.authorSchwingenschlögl, Udoen
kaust.authorAlshareef, Husam N.en
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