Boosting oxygen evolution reaction by activation of lattice-oxygen sites in layered Ruddlesden-Popper oxide

Yinlong Zhu; Hassan A. Tahini; Zhiwei Hu; Yichun Yin; Qian Lin; Hainan Sun; Yijun Zhong; Yubo Chen; Feifei Zhang; Hong Ji Lin; Chien Te Chen; Wei Zhou; Xiwang Zhang; Sean C. Smith; Zongping Shao; Huanting Wang

doi:10.1002/eom2.12021

Boosting oxygen evolution reaction by activation of lattice-oxygen sites in layered Ruddlesden-Popper oxide

Yinlong Zhu, Hassan A. Tahini, Zhiwei Hu, Yichun Yin, Qian Lin, Hainan Sun, Yijun Zhong, Yubo Chen, Feifei Zhang, Hong Ji Lin, Chien Te Chen, Wei Zhou, Xiwang Zhang, Sean C. Smith, Zongping Shao, Huanting Wang

COLLEGE OF CHEMICAL ENGINEERING

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78 Scopus citations

Abstract

Emerging anionic redox chemistry presents new opportunities for enhancing oxygen evolution reaction (OER) activity considering that lattice-oxygen oxidation mechanism (LOM) could bypass thermodynamic limitation of conventional metal-ion participation mechanism. Thus, finding an effective method to activate lattice-oxygen in metal oxides is highly attractive for designing efficient OER electrocatalysts. Here, we discover that the lattice-oxygen sites in Ruddlesden-Popper (RP) crystal structure can be activated, leading to a new class of extremely active OER catalyst. As a proof-of-concept, the RP Sr₃(Co_0.8Fe_0.1Nb_0.1)₂O_7-δ (RP-SCFN) oxide exhibits outstanding OER activity (eg, 334 mV at 10 mA cm⁻² in 0.1 M KOH), which is significantly higher than that of the simple SrCo_0.8Fe_0.1Nb_0.1O_3-δ perovskite and benchmark RuO₂. Combined density functional theory and X-ray absorption spectroscopy studies demonstrate that RP-SCFN follows the LOM under OER condition, and the activated lattice oxygen sites triggered by high covalency of metal-oxygen bonds are the origin of the high catalytic activity. (Figure presented.).

Original language	English
Article number	e12021
Journal	EcoMat
Volume	2
Issue number	2
DOIs	https://doi.org/10.1002/eom2.12021
State	Published - Jun 2020

Keywords

Ruddlesden-Popper oxide
anion activation
lattice-oxygen sites
oxygen evolution reaction
structure engineering

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10.1002/eom2.12021

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title = "Boosting oxygen evolution reaction by activation of lattice-oxygen sites in layered Ruddlesden-Popper oxide",

abstract = "Emerging anionic redox chemistry presents new opportunities for enhancing oxygen evolution reaction (OER) activity considering that lattice-oxygen oxidation mechanism (LOM) could bypass thermodynamic limitation of conventional metal-ion participation mechanism. Thus, finding an effective method to activate lattice-oxygen in metal oxides is highly attractive for designing efficient OER electrocatalysts. Here, we discover that the lattice-oxygen sites in Ruddlesden-Popper (RP) crystal structure can be activated, leading to a new class of extremely active OER catalyst. As a proof-of-concept, the RP Sr3(Co0.8Fe0.1Nb0.1)2O7-δ (RP-SCFN) oxide exhibits outstanding OER activity (eg, 334 mV at 10 mA cm−2 in 0.1 M KOH), which is significantly higher than that of the simple SrCo0.8Fe0.1Nb0.1O3-δ perovskite and benchmark RuO2. Combined density functional theory and X-ray absorption spectroscopy studies demonstrate that RP-SCFN follows the LOM under OER condition, and the activated lattice oxygen sites triggered by high covalency of metal-oxygen bonds are the origin of the high catalytic activity. (Figure presented.).",

keywords = "Ruddlesden-Popper oxide, anion activation, lattice-oxygen sites, oxygen evolution reaction, structure engineering",

author = "Yinlong Zhu and Tahini, {Hassan A.} and Zhiwei Hu and Yichun Yin and Qian Lin and Hainan Sun and Yijun Zhong and Yubo Chen and Feifei Zhang and Lin, {Hong Ji} and Chen, {Chien Te} and Wei Zhou and Xiwang Zhang and Smith, {Sean C.} and Zongping Shao and Huanting Wang",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors. EcoMat published by The Hong Kong Polytechnic University and John Wiley & Sons Australia, Ltd.",

year = "2020",

month = jun,

doi = "10.1002/eom2.12021",

language = "英语",

volume = "2",

journal = "EcoMat",

issn = "2567-3173",

publisher = "John Wiley and Sons Inc",

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TY - JOUR

T1 - Boosting oxygen evolution reaction by activation of lattice-oxygen sites in layered Ruddlesden-Popper oxide

AU - Zhu, Yinlong

AU - Tahini, Hassan A.

AU - Hu, Zhiwei

AU - Yin, Yichun

AU - Lin, Qian

AU - Sun, Hainan

AU - Zhong, Yijun

AU - Chen, Yubo

AU - Zhang, Feifei

AU - Lin, Hong Ji

AU - Chen, Chien Te

AU - Zhou, Wei

AU - Zhang, Xiwang

AU - Smith, Sean C.

AU - Shao, Zongping

AU - Wang, Huanting

PY - 2020/6

Y1 - 2020/6

N2 - Emerging anionic redox chemistry presents new opportunities for enhancing oxygen evolution reaction (OER) activity considering that lattice-oxygen oxidation mechanism (LOM) could bypass thermodynamic limitation of conventional metal-ion participation mechanism. Thus, finding an effective method to activate lattice-oxygen in metal oxides is highly attractive for designing efficient OER electrocatalysts. Here, we discover that the lattice-oxygen sites in Ruddlesden-Popper (RP) crystal structure can be activated, leading to a new class of extremely active OER catalyst. As a proof-of-concept, the RP Sr3(Co0.8Fe0.1Nb0.1)2O7-δ (RP-SCFN) oxide exhibits outstanding OER activity (eg, 334 mV at 10 mA cm−2 in 0.1 M KOH), which is significantly higher than that of the simple SrCo0.8Fe0.1Nb0.1O3-δ perovskite and benchmark RuO2. Combined density functional theory and X-ray absorption spectroscopy studies demonstrate that RP-SCFN follows the LOM under OER condition, and the activated lattice oxygen sites triggered by high covalency of metal-oxygen bonds are the origin of the high catalytic activity. (Figure presented.).

AB - Emerging anionic redox chemistry presents new opportunities for enhancing oxygen evolution reaction (OER) activity considering that lattice-oxygen oxidation mechanism (LOM) could bypass thermodynamic limitation of conventional metal-ion participation mechanism. Thus, finding an effective method to activate lattice-oxygen in metal oxides is highly attractive for designing efficient OER electrocatalysts. Here, we discover that the lattice-oxygen sites in Ruddlesden-Popper (RP) crystal structure can be activated, leading to a new class of extremely active OER catalyst. As a proof-of-concept, the RP Sr3(Co0.8Fe0.1Nb0.1)2O7-δ (RP-SCFN) oxide exhibits outstanding OER activity (eg, 334 mV at 10 mA cm−2 in 0.1 M KOH), which is significantly higher than that of the simple SrCo0.8Fe0.1Nb0.1O3-δ perovskite and benchmark RuO2. Combined density functional theory and X-ray absorption spectroscopy studies demonstrate that RP-SCFN follows the LOM under OER condition, and the activated lattice oxygen sites triggered by high covalency of metal-oxygen bonds are the origin of the high catalytic activity. (Figure presented.).

KW - Ruddlesden-Popper oxide

KW - anion activation

KW - lattice-oxygen sites

KW - oxygen evolution reaction

KW - structure engineering

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DO - 10.1002/eom2.12021

M3 - 文章

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SN - 2567-3173

VL - 2

JO - EcoMat

JF - EcoMat

IS - 2

M1 - e12021

ER -

Boosting oxygen evolution reaction by activation of lattice-oxygen sites in layered Ruddlesden-Popper oxide

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