Influence of cobalt on electrocatalytic water splitting in NiCoFe layered double hydroxides

Ariel Guzmán-Vargas; Juvencio Vazquez-Samperio; Miguel A. Oliver-Tolentino; Noel Nava; Nancy Castillo; Manuel J. Macías-Hernández; E. Reguera

doi:10.1007/s10853-017-1882-z

Influence of cobalt on electrocatalytic water splitting in NiCoFe layered double hydroxides

Ariel Guzmán-Vargas, Juvencio Vazquez-Samperio, Miguel A. Oliver-Tolentino, Noel Nava, Nancy Castillo, Manuel J. Macías-Hernández, E. Reguera

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

NiCoFe layered mixed hydroxides containing same iron composition, but Co/Ni ratios of 1:1, 2:1 and 1:2 were prepared by co-precipitation method and evaluated according to their performance for electrochemical oxygen evolution reaction (OER) or water splitting process. Crystalline phase without impurities was verified by XRD, FTIR, TEM and Mössbauer techniques. From Tafel plots, values of 65 and 110 mV dec⁻¹ at low and high potential, respectively, were obtained; all electrocatalysts showed lower overpotentials around 265 mV, and sample Ni₃Co₃Fe₃ with equimolar composition ratio exhibited the best performance (lowest overpotential 250 mV). Cobalt in low-spin configuration has effect on the electronic properties of brucite layer sheet, modulating the necessary potential for nickel oxidation which acts as active site for water splitting.

Original language	English
Pages (from-to)	4515-4526
Number of pages	12
Journal	Journal of Materials Science
Volume	53
Issue number	6
DOIs	https://doi.org/10.1007/s10853-017-1882-z
State	Published - 1 Mar 2018
Externally published	Yes

Access to Document

10.1007/s10853-017-1882-z

Cite this

@article{6a1799121df54c39b2603e4bac10b4f0,

title = "Influence of cobalt on electrocatalytic water splitting in NiCoFe layered double hydroxides",

abstract = "NiCoFe layered mixed hydroxides containing same iron composition, but Co/Ni ratios of 1:1, 2:1 and 1:2 were prepared by co-precipitation method and evaluated according to their performance for electrochemical oxygen evolution reaction (OER) or water splitting process. Crystalline phase without impurities was verified by XRD, FTIR, TEM and M{\"o}ssbauer techniques. From Tafel plots, values of 65 and 110 mV dec−1 at low and high potential, respectively, were obtained; all electrocatalysts showed lower overpotentials around 265 mV, and sample Ni3Co3Fe3 with equimolar composition ratio exhibited the best performance (lowest overpotential 250 mV). Cobalt in low-spin configuration has effect on the electronic properties of brucite layer sheet, modulating the necessary potential for nickel oxidation which acts as active site for water splitting.",

author = "Ariel Guzm{\'a}n-Vargas and Juvencio Vazquez-Samperio and Oliver-Tolentino, {Miguel A.} and Noel Nava and Nancy Castillo and Mac{\'i}as-Hern{\'a}ndez, {Manuel J.} and E. Reguera",

note = "Publisher Copyright: {\textcopyright} 2017, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2018",

month = mar,

day = "1",

doi = "10.1007/s10853-017-1882-z",

language = "Ingl{\'e}s",

volume = "53",

pages = "4515--4526",

journal = "Journal of Materials Science",

issn = "0022-2461",

number = "6",

}

TY - JOUR

T1 - Influence of cobalt on electrocatalytic water splitting in NiCoFe layered double hydroxides

AU - Guzmán-Vargas, Ariel

AU - Vazquez-Samperio, Juvencio

AU - Oliver-Tolentino, Miguel A.

AU - Nava, Noel

AU - Castillo, Nancy

AU - Macías-Hernández, Manuel J.

AU - Reguera, E.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - NiCoFe layered mixed hydroxides containing same iron composition, but Co/Ni ratios of 1:1, 2:1 and 1:2 were prepared by co-precipitation method and evaluated according to their performance for electrochemical oxygen evolution reaction (OER) or water splitting process. Crystalline phase without impurities was verified by XRD, FTIR, TEM and Mössbauer techniques. From Tafel plots, values of 65 and 110 mV dec−1 at low and high potential, respectively, were obtained; all electrocatalysts showed lower overpotentials around 265 mV, and sample Ni3Co3Fe3 with equimolar composition ratio exhibited the best performance (lowest overpotential 250 mV). Cobalt in low-spin configuration has effect on the electronic properties of brucite layer sheet, modulating the necessary potential for nickel oxidation which acts as active site for water splitting.

AB - NiCoFe layered mixed hydroxides containing same iron composition, but Co/Ni ratios of 1:1, 2:1 and 1:2 were prepared by co-precipitation method and evaluated according to their performance for electrochemical oxygen evolution reaction (OER) or water splitting process. Crystalline phase without impurities was verified by XRD, FTIR, TEM and Mössbauer techniques. From Tafel plots, values of 65 and 110 mV dec−1 at low and high potential, respectively, were obtained; all electrocatalysts showed lower overpotentials around 265 mV, and sample Ni3Co3Fe3 with equimolar composition ratio exhibited the best performance (lowest overpotential 250 mV). Cobalt in low-spin configuration has effect on the electronic properties of brucite layer sheet, modulating the necessary potential for nickel oxidation which acts as active site for water splitting.

UR - http://www.scopus.com/inward/record.url?scp=85037615907&partnerID=8YFLogxK

U2 - 10.1007/s10853-017-1882-z

DO - 10.1007/s10853-017-1882-z

M3 - Artículo

SN - 0022-2461

VL - 53

SP - 4515

EP - 4526

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 6

ER -

Influence of cobalt on electrocatalytic water splitting in NiCoFe layered double hydroxides

Abstract

Access to Document

Other files and links

Fingerprint

Cite this