High activity and durability of novel perovskite electrocatalysts for water oxidation

Wei Zhou; Mingwen Zhao; Fengli Liang; Sean C. Smith; Zhonghua Zhu

doi:10.1039/c5mh00096c

High activity and durability of novel perovskite electrocatalysts for water oxidation

Wei Zhou, Mingwen Zhao, Fengli Liang, Sean C. Smith, Zhonghua Zhu

College of Chemical Engineering

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

139 Scopus citations

Abstract

Development of highly active and cost-effective electrocatalysts is central to the large-scale electrolysis of water for renewable energy generation. Perovskite oxides are a group of promising candidates to lower the oxygen evolution reaction (OER) barriers in water splitting and further improvement of their activity and durability is an important objective. Here we report scandium and niobium cation (Sc³⁺ and Nb⁵⁺) doped strontium cobaltite perovskites (SrSc_xNb_yCo_1-x-yO_3-δ) as a family of highly active and durable electrocatalysts for the OER in alkaline solution. These perovskites not only manifest up to a factor of 50 increase of the intrinsic activity compared to the gold-standard OER electrocatalysts (such as IrO₂ and RuO₂) and a factor of 5.8 enhancement to the perovskite-Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ at an overpotential of 0.35 V, but also, more importantly, show excellent durability in alkaline solutions under operation.

Original language	English
Pages (from-to)	495-501
Number of pages	7
Journal	Materials Horizons
Volume	2
Issue number	5
DOIs	https://doi.org/10.1039/c5mh00096c
State	Published - 1 Sep 2015

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title = "High activity and durability of novel perovskite electrocatalysts for water oxidation",

abstract = "Development of highly active and cost-effective electrocatalysts is central to the large-scale electrolysis of water for renewable energy generation. Perovskite oxides are a group of promising candidates to lower the oxygen evolution reaction (OER) barriers in water splitting and further improvement of their activity and durability is an important objective. Here we report scandium and niobium cation (Sc3+ and Nb5+) doped strontium cobaltite perovskites (SrScxNbyCo1-x-yO3-δ) as a family of highly active and durable electrocatalysts for the OER in alkaline solution. These perovskites not only manifest up to a factor of 50 increase of the intrinsic activity compared to the gold-standard OER electrocatalysts (such as IrO2 and RuO2) and a factor of 5.8 enhancement to the perovskite-Ba0.5Sr0.5Co0.8Fe0.2O3-δ at an overpotential of 0.35 V, but also, more importantly, show excellent durability in alkaline solutions under operation.",

author = "Wei Zhou and Mingwen Zhao and Fengli Liang and Smith, {Sean C.} and Zhonghua Zhu",

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T1 - High activity and durability of novel perovskite electrocatalysts for water oxidation

AU - Zhou, Wei

AU - Zhao, Mingwen

AU - Liang, Fengli

AU - Smith, Sean C.

AU - Zhu, Zhonghua

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Development of highly active and cost-effective electrocatalysts is central to the large-scale electrolysis of water for renewable energy generation. Perovskite oxides are a group of promising candidates to lower the oxygen evolution reaction (OER) barriers in water splitting and further improvement of their activity and durability is an important objective. Here we report scandium and niobium cation (Sc3+ and Nb5+) doped strontium cobaltite perovskites (SrScxNbyCo1-x-yO3-δ) as a family of highly active and durable electrocatalysts for the OER in alkaline solution. These perovskites not only manifest up to a factor of 50 increase of the intrinsic activity compared to the gold-standard OER electrocatalysts (such as IrO2 and RuO2) and a factor of 5.8 enhancement to the perovskite-Ba0.5Sr0.5Co0.8Fe0.2O3-δ at an overpotential of 0.35 V, but also, more importantly, show excellent durability in alkaline solutions under operation.

AB - Development of highly active and cost-effective electrocatalysts is central to the large-scale electrolysis of water for renewable energy generation. Perovskite oxides are a group of promising candidates to lower the oxygen evolution reaction (OER) barriers in water splitting and further improvement of their activity and durability is an important objective. Here we report scandium and niobium cation (Sc3+ and Nb5+) doped strontium cobaltite perovskites (SrScxNbyCo1-x-yO3-δ) as a family of highly active and durable electrocatalysts for the OER in alkaline solution. These perovskites not only manifest up to a factor of 50 increase of the intrinsic activity compared to the gold-standard OER electrocatalysts (such as IrO2 and RuO2) and a factor of 5.8 enhancement to the perovskite-Ba0.5Sr0.5Co0.8Fe0.2O3-δ at an overpotential of 0.35 V, but also, more importantly, show excellent durability in alkaline solutions under operation.

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U2 - 10.1039/c5mh00096c

DO - 10.1039/c5mh00096c

M3 - 文章

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SN - 2051-6347

VL - 2

SP - 495

EP - 501

JO - Materials Horizons

JF - Materials Horizons

IS - 5

ER -

High activity and durability of novel perovskite electrocatalysts for water oxidation

Abstract

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