Porous cobalt oxide nanoplates enriched with oxygen vacancies for oxygen evolution reaction

Wenjing Xu; Fenglei Lyu; Yaocai Bai; Aiqin Gao; Ji Feng; Zhixiong Cai; Yadong Yin

doi:10.1016/j.nanoen.2017.11.022

Porous cobalt oxide nanoplates enriched with oxygen vacancies for oxygen evolution reaction

Wenjing Xu, Fenglei Lyu, Yaocai Bai, Aiqin Gao, Ji Feng, Zhixiong Cai, Yadong Yin

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

455 Scopus citations

Abstract

Porous cobalt oxide nanoplates enriched with oxygen vacancies are synthesized using a ligand-assisted polyol reduction method. This method enables large-scale synthesis that offers superior uniformity, solution dispersity and controllable concentration of oxygen vacancies on surface. The large surface area of porous cobalt oxide nanoplates together with enriched oxygen vacancies provide more active sites, which promote faster exchange of intermediates and more efficient electron transfer. The as prepared cobalt oxide nanoplates manifest oxygen evolution reaction (OER) overpotential as low as 306 mV at 10 mA/cm² in 1 M KOH, which is superior to the values of most reported Co-based electrocatalysts.

Original language	English
Pages (from-to)	110-116
Number of pages	7
Journal	Nano Energy
Volume	43
DOIs	https://doi.org/10.1016/j.nanoen.2017.11.022
State	Published - Jan 2018
Externally published	Yes

Funding

Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund for partial support of this research (55904-ND10). Lyu and Gao thank the financial support from the China Scholarship Council .

Funders	Funder number
American Chemical Society Petroleum Research Fund	55904-ND10
China Scholarship Council

Keywords

Cobalt hydroxide
Cobalt oxide
Oxygen evolution reaction
Oxygen vacancies
Polyol reduction

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10.1016/j.nanoen.2017.11.022

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title = "Porous cobalt oxide nanoplates enriched with oxygen vacancies for oxygen evolution reaction",

abstract = "Porous cobalt oxide nanoplates enriched with oxygen vacancies are synthesized using a ligand-assisted polyol reduction method. This method enables large-scale synthesis that offers superior uniformity, solution dispersity and controllable concentration of oxygen vacancies on surface. The large surface area of porous cobalt oxide nanoplates together with enriched oxygen vacancies provide more active sites, which promote faster exchange of intermediates and more efficient electron transfer. The as prepared cobalt oxide nanoplates manifest oxygen evolution reaction (OER) overpotential as low as 306 mV at 10 mA/cm2 in 1 M KOH, which is superior to the values of most reported Co-based electrocatalysts.",

keywords = "Cobalt hydroxide, Cobalt oxide, Oxygen evolution reaction, Oxygen vacancies, Polyol reduction",

author = "Wenjing Xu and Fenglei Lyu and Yaocai Bai and Aiqin Gao and Ji Feng and Zhixiong Cai and Yadong Yin",

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doi = "10.1016/j.nanoen.2017.11.022",

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T1 - Porous cobalt oxide nanoplates enriched with oxygen vacancies for oxygen evolution reaction

AU - Xu, Wenjing

AU - Lyu, Fenglei

AU - Bai, Yaocai

AU - Gao, Aiqin

AU - Feng, Ji

AU - Cai, Zhixiong

AU - Yin, Yadong

PY - 2018/1

Y1 - 2018/1

N2 - Porous cobalt oxide nanoplates enriched with oxygen vacancies are synthesized using a ligand-assisted polyol reduction method. This method enables large-scale synthesis that offers superior uniformity, solution dispersity and controllable concentration of oxygen vacancies on surface. The large surface area of porous cobalt oxide nanoplates together with enriched oxygen vacancies provide more active sites, which promote faster exchange of intermediates and more efficient electron transfer. The as prepared cobalt oxide nanoplates manifest oxygen evolution reaction (OER) overpotential as low as 306 mV at 10 mA/cm2 in 1 M KOH, which is superior to the values of most reported Co-based electrocatalysts.

AB - Porous cobalt oxide nanoplates enriched with oxygen vacancies are synthesized using a ligand-assisted polyol reduction method. This method enables large-scale synthesis that offers superior uniformity, solution dispersity and controllable concentration of oxygen vacancies on surface. The large surface area of porous cobalt oxide nanoplates together with enriched oxygen vacancies provide more active sites, which promote faster exchange of intermediates and more efficient electron transfer. The as prepared cobalt oxide nanoplates manifest oxygen evolution reaction (OER) overpotential as low as 306 mV at 10 mA/cm2 in 1 M KOH, which is superior to the values of most reported Co-based electrocatalysts.

KW - Cobalt hydroxide

KW - Cobalt oxide

KW - Oxygen evolution reaction

KW - Oxygen vacancies

KW - Polyol reduction

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DO - 10.1016/j.nanoen.2017.11.022

M3 - Article

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SN - 2211-2855

VL - 43

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JO - Nano Energy

JF - Nano Energy

ER -

Porous cobalt oxide nanoplates enriched with oxygen vacancies for oxygen evolution reaction

Abstract

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Keywords

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