Amorphous cobalt-cerium binary metal oxides as high performance electrocatalyst for oxygen evolution reaction

Lili Pan; Qingqing Wang; Yongdan Li; Cuijuan Zhang

doi:10.1016/j.jcat.2020.02.005

Amorphous cobalt-cerium binary metal oxides as high performance electrocatalyst for oxygen evolution reaction

Lili Pan, Qingqing Wang, Yongdan Li, Cuijuan Zhang

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Abstract

The amorphous Co-Ce binary metal oxides Co_1-yCe_yO_x prepared by the photochemical metal–organic deposition (PMOD) method is developed as high performance electrocatalysts for oxygen evolution reaction (OER). The influence of Ce content on the OER activity is investigated in terms of geometric and electronic factors. Ce can remarkably enhance the OER activity of CoO_x due to the synergistic effect of surface area, Co³⁺ content, and metal-OH bond strength when the content of Ce is less than 60%. Co_0.9Ce_0.1O_x supported on fluorine-doped tin oxide (FTO) coated glass substrate shows overpotential of 320 (2) mV at 10 mA cm⁻² in 1 M KOH solution. The OER mechanism exploration reveals that the rate determining step changes with the Ce content due to the variation of metal-OH bond strength. This work sheds light on the design of high-performance yet cost-effective OER catalysts.

Original language	English
Pages (from-to)	14-21
Number of pages	8
Journal	Journal of Catalysis
Volume	384
Early online date	27 Feb 2020
DOIs	https://doi.org/10.1016/j.jcat.2020.02.005
Publication status	Published - Apr 2020
MoE publication type	A1 Journal article-refereed

Keywords

Cerium
Cobalt oxide
Hydrogen production
Oxygen evolution reaction

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jcat.2020.02.005

CHEM_Pan_et_al_Amorphous_cobalt-cerium_2020_Journal_of_CatalysisAccepted author manuscript, 1.03 MBLicence: CC BY-NC-ND

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title = "Amorphous cobalt-cerium binary metal oxides as high performance electrocatalyst for oxygen evolution reaction",

abstract = "The amorphous Co-Ce binary metal oxides Co1-yCeyOx prepared by the photochemical metal–organic deposition (PMOD) method is developed as high performance electrocatalysts for oxygen evolution reaction (OER). The influence of Ce content on the OER activity is investigated in terms of geometric and electronic factors. Ce can remarkably enhance the OER activity of CoOx due to the synergistic effect of surface area, Co3+ content, and metal-OH bond strength when the content of Ce is less than 60%. Co0.9Ce0.1Ox supported on fluorine-doped tin oxide (FTO) coated glass substrate shows overpotential of 320 (2) mV at 10 mA cm−2 in 1 M KOH solution. The OER mechanism exploration reveals that the rate determining step changes with the Ce content due to the variation of metal-OH bond strength. This work sheds light on the design of high-performance yet cost-effective OER catalysts.",

keywords = "Cerium, Cobalt oxide, Hydrogen production, Oxygen evolution reaction",

author = "Lili Pan and Qingqing Wang and Yongdan Li and Cuijuan Zhang",

year = "2020",

month = apr,

doi = "10.1016/j.jcat.2020.02.005",

language = "English",

volume = "384",

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journal = "Journal of Catalysis",

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TY - JOUR

T1 - Amorphous cobalt-cerium binary metal oxides as high performance electrocatalyst for oxygen evolution reaction

AU - Pan, Lili

AU - Wang, Qingqing

AU - Li, Yongdan

AU - Zhang, Cuijuan

PY - 2020/4

Y1 - 2020/4

N2 - The amorphous Co-Ce binary metal oxides Co1-yCeyOx prepared by the photochemical metal–organic deposition (PMOD) method is developed as high performance electrocatalysts for oxygen evolution reaction (OER). The influence of Ce content on the OER activity is investigated in terms of geometric and electronic factors. Ce can remarkably enhance the OER activity of CoOx due to the synergistic effect of surface area, Co3+ content, and metal-OH bond strength when the content of Ce is less than 60%. Co0.9Ce0.1Ox supported on fluorine-doped tin oxide (FTO) coated glass substrate shows overpotential of 320 (2) mV at 10 mA cm−2 in 1 M KOH solution. The OER mechanism exploration reveals that the rate determining step changes with the Ce content due to the variation of metal-OH bond strength. This work sheds light on the design of high-performance yet cost-effective OER catalysts.

AB - The amorphous Co-Ce binary metal oxides Co1-yCeyOx prepared by the photochemical metal–organic deposition (PMOD) method is developed as high performance electrocatalysts for oxygen evolution reaction (OER). The influence of Ce content on the OER activity is investigated in terms of geometric and electronic factors. Ce can remarkably enhance the OER activity of CoOx due to the synergistic effect of surface area, Co3+ content, and metal-OH bond strength when the content of Ce is less than 60%. Co0.9Ce0.1Ox supported on fluorine-doped tin oxide (FTO) coated glass substrate shows overpotential of 320 (2) mV at 10 mA cm−2 in 1 M KOH solution. The OER mechanism exploration reveals that the rate determining step changes with the Ce content due to the variation of metal-OH bond strength. This work sheds light on the design of high-performance yet cost-effective OER catalysts.

KW - Cerium

KW - Cobalt oxide

KW - Hydrogen production

KW - Oxygen evolution reaction

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U2 - 10.1016/j.jcat.2020.02.005

DO - 10.1016/j.jcat.2020.02.005

M3 - Article

AN - SCOPUS:85079850275

SN - 0021-9517

VL - 384

SP - 14

EP - 21

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -

Amorphous cobalt-cerium binary metal oxides as high performance electrocatalyst for oxygen evolution reaction

Abstract

Keywords

UN SDGs

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