Large current density for oxygen evolution from pyramidally-coordinated Co oxide

Yitian Hu; Lili Li; Jianfa Zhao; Yu Cheng Huang; Chang yang Kuo; Jing Zhou; Yalei Fan; Hong Ji Lin; Chung Li Dong; Chih Wen Pao; Jyh Fu Lee; Chien Te Chen; Changqing Jin; Zhiwei Hu; Jian Qiang Wang; Linjuan Zhang

doi:10.1016/j.apcatb.2023.122785

Large current density for oxygen evolution from pyramidally-coordinated Co oxide

Yitian Hu, Lili Li, Jianfa Zhao, Yu Cheng Huang, Chang yang Kuo, Jing Zhou, Yalei Fan, Hong Ji Lin, Chung Li Dong, Chih Wen Pao, Jyh Fu Lee, Chien Te Chen, Changqing Jin, Zhiwei Hu^*, Jian Qiang Wang^*, Linjuan Zhang

^*Corresponding author for this work

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

19 Scopus citations

Abstract

Developing efficient electrocatalyst at large current densities to meet the requirement of industrial water splitting is a big challenge today. Herein, we report a class of catalyst, BiCoO₃ with pyramidally coordinated Co³⁺. BiCoO₃ exhibits a large current density of 1000 mA cm⁻² at a low overpotential of 402 mV and the overpotential even reduces to only 303 mV to achieve 1000 mA cm⁻² by replacing Co with Fe, which belongs to the first-class level among large-current-densities electrocatalysts reported so far. Different from artificially created oxygen vacancies to optimize the bonding strength of the intermediate for enhancement of OER activity, BiCoO₃ has the rich active sites and the shortest reaction pathway leading to a large current density, as structurally every Co-O cluster has one oxygen vacancy. This work opens a new avenue for enhanced OER activity at high current densities via optimizing the arrangement of ligand vacancies.

Original language	English
Article number	122785
Journal	Applied Catalysis B: Environmental
Volume	333
DOIs	https://doi.org/10.1016/j.apcatb.2023.122785
State	Published - 15 Sep 2023

Keywords

BiCoO
Large current density
Oxygen evolution reaction
Oxygen vacancies

UN SDGs

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

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10.1016/j.apcatb.2023.122785

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@article{d33d88feba8743898fb92280c52d000d,

title = "Large current density for oxygen evolution from pyramidally-coordinated Co oxide",

abstract = "Developing efficient electrocatalyst at large current densities to meet the requirement of industrial water splitting is a big challenge today. Herein, we report a class of catalyst, BiCoO3 with pyramidally coordinated Co3+. BiCoO3 exhibits a large current density of 1000 mA cm−2 at a low overpotential of 402 mV and the overpotential even reduces to only 303 mV to achieve 1000 mA cm−2 by replacing Co with Fe, which belongs to the first-class level among large-current-densities electrocatalysts reported so far. Different from artificially created oxygen vacancies to optimize the bonding strength of the intermediate for enhancement of OER activity, BiCoO3 has the rich active sites and the shortest reaction pathway leading to a large current density, as structurally every Co-O cluster has one oxygen vacancy. This work opens a new avenue for enhanced OER activity at high current densities via optimizing the arrangement of ligand vacancies.",

keywords = "BiCoO, Large current density, Oxygen evolution reaction, Oxygen vacancies",

author = "Yitian Hu and Lili Li and Jianfa Zhao and Huang, {Yu Cheng} and Kuo, {Chang yang} and Jing Zhou and Yalei Fan and Lin, {Hong Ji} and Dong, {Chung Li} and Pao, {Chih Wen} and Lee, {Jyh Fu} and Chen, {Chien Te} and Changqing Jin and Zhiwei Hu and Wang, {Jian Qiang} and Linjuan Zhang",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = sep,

day = "15",

doi = "10.1016/j.apcatb.2023.122785",

language = "English",

volume = "333",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Large current density for oxygen evolution from pyramidally-coordinated Co oxide

AU - Hu, Yitian

AU - Li, Lili

AU - Zhao, Jianfa

AU - Huang, Yu Cheng

AU - Kuo, Chang yang

AU - Zhou, Jing

AU - Fan, Yalei

AU - Lin, Hong Ji

AU - Dong, Chung Li

AU - Pao, Chih Wen

AU - Lee, Jyh Fu

AU - Chen, Chien Te

AU - Jin, Changqing

AU - Hu, Zhiwei

AU - Wang, Jian Qiang

AU - Zhang, Linjuan

PY - 2023/9/15

Y1 - 2023/9/15

N2 - Developing efficient electrocatalyst at large current densities to meet the requirement of industrial water splitting is a big challenge today. Herein, we report a class of catalyst, BiCoO3 with pyramidally coordinated Co3+. BiCoO3 exhibits a large current density of 1000 mA cm−2 at a low overpotential of 402 mV and the overpotential even reduces to only 303 mV to achieve 1000 mA cm−2 by replacing Co with Fe, which belongs to the first-class level among large-current-densities electrocatalysts reported so far. Different from artificially created oxygen vacancies to optimize the bonding strength of the intermediate for enhancement of OER activity, BiCoO3 has the rich active sites and the shortest reaction pathway leading to a large current density, as structurally every Co-O cluster has one oxygen vacancy. This work opens a new avenue for enhanced OER activity at high current densities via optimizing the arrangement of ligand vacancies.

AB - Developing efficient electrocatalyst at large current densities to meet the requirement of industrial water splitting is a big challenge today. Herein, we report a class of catalyst, BiCoO3 with pyramidally coordinated Co3+. BiCoO3 exhibits a large current density of 1000 mA cm−2 at a low overpotential of 402 mV and the overpotential even reduces to only 303 mV to achieve 1000 mA cm−2 by replacing Co with Fe, which belongs to the first-class level among large-current-densities electrocatalysts reported so far. Different from artificially created oxygen vacancies to optimize the bonding strength of the intermediate for enhancement of OER activity, BiCoO3 has the rich active sites and the shortest reaction pathway leading to a large current density, as structurally every Co-O cluster has one oxygen vacancy. This work opens a new avenue for enhanced OER activity at high current densities via optimizing the arrangement of ligand vacancies.

KW - BiCoO

KW - Large current density

KW - Oxygen evolution reaction

KW - Oxygen vacancies

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U2 - 10.1016/j.apcatb.2023.122785

DO - 10.1016/j.apcatb.2023.122785

M3 - Article

AN - SCOPUS:85153087243

SN - 0926-3373

VL - 333

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 122785

ER -

Large current density for oxygen evolution from pyramidally-coordinated Co oxide

Abstract

Keywords

UN SDGs

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