Insight the effect of surface Co cations on the electrocatalytic oxygen evolution properties of cobaltite spinels

Yuan Tan, Congcong Wu, Hong Lin, Jianbao Li, Bo Chi, Jian Pu, Li Jian

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

In this paper, the electrocatalytic performance of cobaltite spinels for oxygen evolution reaction (OER) in alkaline electrolysis is studied. Cobaltites MxCo3-xO4 (M= Ni, Cu, Zn, Mn; x = 1 or 0.9) are synthesized by the coprecipitation method and characterized for the OER performance. Cyclic voltammetric measurement confirms that the cobaltites exhibit different redox characteristic for Co cation couples. NiCo 2O4 and MnCo2O4 show the redox couple of Co(III)/Co(II) during OER, while for ZnCo2O4 and Cu0.9Co2.1O4 are Co(IV)/Co(III). OER measurement reveals that all these cobaltite spinel electrodes show better performance than metal Ni electrode. And ZnCo2O4 shows the best performance for OER with the highest current density of 205mAcm -2 at potential of 0.7 V. XPS result verifies that the cobaltites have the different surface Co cations distribution. The analysis discovers that the amount of the surface Co cations occupying the octahedral sites in spinel is crucial for OER performance.

Original languageEnglish (US)
Pages (from-to)183-187
Number of pages5
JournalElectrochimica Acta
Volume121
DOIs
StatePublished - Mar 1 2014

Fingerprint

Cations
Positive ions
Oxygen
Electrodes
Coprecipitation
Electrolysis
cobaltite
Current density
X ray photoelectron spectroscopy
Metals
Oxidation-Reduction
spinell

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Tan, Yuan ; Wu, Congcong ; Lin, Hong ; Li, Jianbao ; Chi, Bo ; Pu, Jian ; Jian, Li. / Insight the effect of surface Co cations on the electrocatalytic oxygen evolution properties of cobaltite spinels. In: Electrochimica Acta. 2014 ; Vol. 121. pp. 183-187.
@article{803524f3b8d14f7fa8fc0ab763f30608,
title = "Insight the effect of surface Co cations on the electrocatalytic oxygen evolution properties of cobaltite spinels",
abstract = "In this paper, the electrocatalytic performance of cobaltite spinels for oxygen evolution reaction (OER) in alkaline electrolysis is studied. Cobaltites MxCo3-xO4 (M= Ni, Cu, Zn, Mn; x = 1 or 0.9) are synthesized by the coprecipitation method and characterized for the OER performance. Cyclic voltammetric measurement confirms that the cobaltites exhibit different redox characteristic for Co cation couples. NiCo 2O4 and MnCo2O4 show the redox couple of Co(III)/Co(II) during OER, while for ZnCo2O4 and Cu0.9Co2.1O4 are Co(IV)/Co(III). OER measurement reveals that all these cobaltite spinel electrodes show better performance than metal Ni electrode. And ZnCo2O4 shows the best performance for OER with the highest current density of 205mAcm -2 at potential of 0.7 V. XPS result verifies that the cobaltites have the different surface Co cations distribution. The analysis discovers that the amount of the surface Co cations occupying the octahedral sites in spinel is crucial for OER performance.",
author = "Yuan Tan and Congcong Wu and Hong Lin and Jianbao Li and Bo Chi and Jian Pu and Li Jian",
year = "2014",
month = "3",
day = "1",
doi = "10.1016/j.electacta.2013.12.128",
language = "English (US)",
volume = "121",
pages = "183--187",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",

}

Insight the effect of surface Co cations on the electrocatalytic oxygen evolution properties of cobaltite spinels. / Tan, Yuan; Wu, Congcong; Lin, Hong; Li, Jianbao; Chi, Bo; Pu, Jian; Jian, Li.

In: Electrochimica Acta, Vol. 121, 01.03.2014, p. 183-187.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Insight the effect of surface Co cations on the electrocatalytic oxygen evolution properties of cobaltite spinels

AU - Tan, Yuan

AU - Wu, Congcong

AU - Lin, Hong

AU - Li, Jianbao

AU - Chi, Bo

AU - Pu, Jian

AU - Jian, Li

PY - 2014/3/1

Y1 - 2014/3/1

N2 - In this paper, the electrocatalytic performance of cobaltite spinels for oxygen evolution reaction (OER) in alkaline electrolysis is studied. Cobaltites MxCo3-xO4 (M= Ni, Cu, Zn, Mn; x = 1 or 0.9) are synthesized by the coprecipitation method and characterized for the OER performance. Cyclic voltammetric measurement confirms that the cobaltites exhibit different redox characteristic for Co cation couples. NiCo 2O4 and MnCo2O4 show the redox couple of Co(III)/Co(II) during OER, while for ZnCo2O4 and Cu0.9Co2.1O4 are Co(IV)/Co(III). OER measurement reveals that all these cobaltite spinel electrodes show better performance than metal Ni electrode. And ZnCo2O4 shows the best performance for OER with the highest current density of 205mAcm -2 at potential of 0.7 V. XPS result verifies that the cobaltites have the different surface Co cations distribution. The analysis discovers that the amount of the surface Co cations occupying the octahedral sites in spinel is crucial for OER performance.

AB - In this paper, the electrocatalytic performance of cobaltite spinels for oxygen evolution reaction (OER) in alkaline electrolysis is studied. Cobaltites MxCo3-xO4 (M= Ni, Cu, Zn, Mn; x = 1 or 0.9) are synthesized by the coprecipitation method and characterized for the OER performance. Cyclic voltammetric measurement confirms that the cobaltites exhibit different redox characteristic for Co cation couples. NiCo 2O4 and MnCo2O4 show the redox couple of Co(III)/Co(II) during OER, while for ZnCo2O4 and Cu0.9Co2.1O4 are Co(IV)/Co(III). OER measurement reveals that all these cobaltite spinel electrodes show better performance than metal Ni electrode. And ZnCo2O4 shows the best performance for OER with the highest current density of 205mAcm -2 at potential of 0.7 V. XPS result verifies that the cobaltites have the different surface Co cations distribution. The analysis discovers that the amount of the surface Co cations occupying the octahedral sites in spinel is crucial for OER performance.

UR - http://www.scopus.com/inward/record.url?scp=84892763533&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84892763533&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2013.12.128

DO - 10.1016/j.electacta.2013.12.128

M3 - Article

AN - SCOPUS:84892763533

VL - 121

SP - 183

EP - 187

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -