Enabling high and stable electrocatalytic activity of iron-based perovskite oxides for water splitting by combined bulk doping and morphology designing

Jie Dai, Yinlong Zhu, Yijun Zhong, Jie Miao, Bowen Lin, Wei Zhou, Zongping Shao

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are crucial for water splitting technology, and perovskite oxides have received tremendous attention as promising candidates due to the compositional flexibility and rich properties. Here, reported is the successful deployment of cost-effective iron-based perovskites into efficient water splitting catalysts with both high activity and stability by combined bulk and morphology tuning strategy. Through constructing 3D ordered macroporous (3DOM) structure of LaFeO3 perovskite, approximately twofold and approximately fourfold enhancement in activity for OER and HER, respectively were realized together with much improved OER durability. By a small amount of cobalt doping, both catalytic activity and stability were further improved with activity comparing favorably to or even outperforming Co-/Ni-rich perovskite catalysts. Enhanced performance is correlated with optimized Fe/O species, high surface area, and good charge/mass transport.

Original languageEnglish
Article number1801317
Number of pages8
JournalAdvanced Materials Interfaces
Volume6
Issue number1
DOIs
Publication statusPublished - 9 Jan 2019

Keywords

  • 3DOM architecture
  • bulk doping
  • electrocatalysis
  • Fe-based perovskites
  • water splitting

Cite this

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title = "Enabling high and stable electrocatalytic activity of iron-based perovskite oxides for water splitting by combined bulk doping and morphology designing",
abstract = "The catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are crucial for water splitting technology, and perovskite oxides have received tremendous attention as promising candidates due to the compositional flexibility and rich properties. Here, reported is the successful deployment of cost-effective iron-based perovskites into efficient water splitting catalysts with both high activity and stability by combined bulk and morphology tuning strategy. Through constructing 3D ordered macroporous (3DOM) structure of LaFeO3 perovskite, approximately twofold and approximately fourfold enhancement in activity for OER and HER, respectively were realized together with much improved OER durability. By a small amount of cobalt doping, both catalytic activity and stability were further improved with activity comparing favorably to or even outperforming Co-/Ni-rich perovskite catalysts. Enhanced performance is correlated with optimized Fe/O species, high surface area, and good charge/mass transport.",
keywords = "3DOM architecture, bulk doping, electrocatalysis, Fe-based perovskites, water splitting",
author = "Jie Dai and Yinlong Zhu and Yijun Zhong and Jie Miao and Bowen Lin and Wei Zhou and Zongping Shao",
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language = "English",
volume = "6",
journal = "Advanced Materials Interfaces",
issn = "2196-7350",
publisher = "Wiley-VCH Verlag GmbH & Co. KGaA",
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Enabling high and stable electrocatalytic activity of iron-based perovskite oxides for water splitting by combined bulk doping and morphology designing. / Dai, Jie; Zhu, Yinlong; Zhong, Yijun; Miao, Jie; Lin, Bowen; Zhou, Wei; Shao, Zongping.

In: Advanced Materials Interfaces, Vol. 6, No. 1, 1801317, 09.01.2019.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Enabling high and stable electrocatalytic activity of iron-based perovskite oxides for water splitting by combined bulk doping and morphology designing

AU - Dai, Jie

AU - Zhu, Yinlong

AU - Zhong, Yijun

AU - Miao, Jie

AU - Lin, Bowen

AU - Zhou, Wei

AU - Shao, Zongping

PY - 2019/1/9

Y1 - 2019/1/9

N2 - The catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are crucial for water splitting technology, and perovskite oxides have received tremendous attention as promising candidates due to the compositional flexibility and rich properties. Here, reported is the successful deployment of cost-effective iron-based perovskites into efficient water splitting catalysts with both high activity and stability by combined bulk and morphology tuning strategy. Through constructing 3D ordered macroporous (3DOM) structure of LaFeO3 perovskite, approximately twofold and approximately fourfold enhancement in activity for OER and HER, respectively were realized together with much improved OER durability. By a small amount of cobalt doping, both catalytic activity and stability were further improved with activity comparing favorably to or even outperforming Co-/Ni-rich perovskite catalysts. Enhanced performance is correlated with optimized Fe/O species, high surface area, and good charge/mass transport.

AB - The catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are crucial for water splitting technology, and perovskite oxides have received tremendous attention as promising candidates due to the compositional flexibility and rich properties. Here, reported is the successful deployment of cost-effective iron-based perovskites into efficient water splitting catalysts with both high activity and stability by combined bulk and morphology tuning strategy. Through constructing 3D ordered macroporous (3DOM) structure of LaFeO3 perovskite, approximately twofold and approximately fourfold enhancement in activity for OER and HER, respectively were realized together with much improved OER durability. By a small amount of cobalt doping, both catalytic activity and stability were further improved with activity comparing favorably to or even outperforming Co-/Ni-rich perovskite catalysts. Enhanced performance is correlated with optimized Fe/O species, high surface area, and good charge/mass transport.

KW - 3DOM architecture

KW - bulk doping

KW - electrocatalysis

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