start-ver=1.4
cd-journal=joma
no-vol=6
cd-vols=
no-issue=Suppl. 7
article-no=
start-page=248
end-page=254
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20201204
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Self-assembly of Ni–Fe layered double hydroxide at room temperature for oxygen evolution reaction
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Active and stable electrocatalysts are the key to water electrolysis for hydrogen production. This paper reports a facile direct growth method to synthesize NiFe-layered double hydroxides (LDHs) on nickel foil as an electrocatalyst for the oxygen evolution reaction. The NiFe-LDH is synthesized by a galvanic process at room temperature without any additional energy for synthesis. The synthesized NiFe-LDH is a karst landform with abundant active sites and efficient mass diffusion. The NiFe-LDH with an oxygen defect show excellent electrocatalytic performance for the OER, with a low overpotential (272 mV at 10 mA/cm2), a small Tafel slope (43 mV/dec), and superior durability. Direct growth synthesis provide excellent electrical conductivity as well as strong bonding between the catalyst layer and the substrate. In addition, this synthesis process is simple to apply in the fabrication of a large size electrode and is believed to be applicable to commercialized alkaline water electrolysis.
en-copyright=
kn-copyright=

en-aut-name=KimSeong Hyun
en-aut-sei=Kim
en-aut-mei=Seong Hyun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=ParkYoo Sei
en-aut-sei=Park
en-aut-mei=Yoo Sei
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=KimChiho
en-aut-sei=Kim
en-aut-mei=Chiho
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KwonIl Yeong
en-aut-sei=Kwon
en-aut-mei=Il Yeong
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=LeeJooyoung
en-aut-sei=Lee
en-aut-mei=Jooyoung
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=JinHyunsoo
en-aut-sei=Jin
en-aut-mei=Hyunsoo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=LeeYoon-Seok
en-aut-sei=Lee
en-aut-mei=Yoon-Seok
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=ChoiSung Mook
en-aut-sei=Choi
en-aut-mei=Sung Mook
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

en-aut-name=KimYangdo
en-aut-sei=Kim
en-aut-mei=Yangdo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=

affil-num=1
en-affil=Department of Materials Science and Engineering, Pusan National University
kn-affil=

affil-num=2
en-affil=Department of Materials Science and Engineering, Pusan National University
kn-affil=

affil-num=3
en-affil=Department of Materials Science and Engineering, Pusan National University
kn-affil=

affil-num=4
en-affil=Department of Materials Science and Engineering, Pusan National University
kn-affil=

affil-num=5
en-affil=Materials Center for Energy Department, Surface Technology Division, Korea Institute of Materials Science,
kn-affil=

affil-num=6
en-affil=Department of Mechanical Engineering, Worcester Polytechnic Institute
kn-affil=

affil-num=7
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=8
en-affil=Materials Center for Energy Department, Surface Technology Division, Korea Institute of Materials Science
kn-affil=

affil-num=9
en-affil=Department of Materials Science and Engineering, Pusan National University
kn-affil=
en-keyword=Water electrolysis
kn-keyword=Water electrolysis
en-keyword=Oxygen evolution reaction
kn-keyword=Oxygen evolution reaction
en-keyword=NiFe layered double hydroxide
kn-keyword=NiFe layered double hydroxide
en-keyword=Room temperature synthesis
kn-keyword=Room temperature synthesis
en-keyword=Electrocatalyst
kn-keyword=Electrocatalyst
END