A Low-Lewis-Acid-Strength Cation Cs+-doped Double Perovskite for Fast and Durable Oxygen Reduction/evolutions on Protonic Ceramic Cells

Yangsen Xu; Kang Xu; Feng Zhu; Fan He; Hua Zhang; Chuanyu Fang; Ying Liu; Yucun Zhou; YongMan Choi; Yu Chen

doi:10.1021/acsenergylett.3c01722

A Low-Lewis-Acid-Strength Cation Cs+-doped Double Perovskite for Fast and Durable Oxygen Reduction/evolutions on Protonic Ceramic Cells

Yangsen Xu, Kang Xu, Feng Zhu, Fan He, Hua Zhang, Chuanyu Fang, Ying Liu^*, Yucun Zhou, YongMan Choi, Yu Chen^*

^*Corresponding author for this work

Institute of Photonic System

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

33 Scopus citations

Abstract

Improving the reaction kinetics and durability of air electrodes on protonic ceramic cells is effective for their commercialization but challenging. Here, we report our electrode design via a low-Lewis-acid-strength cation (Cs+) doping strategy on a double perovskite oxide with a detailed formula of PrBa0.9Cs0.1Co2O5+δ (PBCsC). At 600 °C, the PBCsC electrode demonstrates a low area-specific resistance (ASR) value of 0.3 Ω cm2 within 100 h without significant degradation due likely to the electron pair shift by the polarization distribution of ionic Lewis acid strength at A and B sites. At 650 °C, a full cell with the PBCsC electrode displays an encouraging peak power density of 1.66 W cm–2 in the fuel cell (FC) mode, a high current density of −2.85 A cm–2 (at 1.3 V) in the electrolysis (EC) mode, good operational stability in dual modes of FC and EC, and promising cycling durability of 20 cycles in ∼80 h.

Original language	American English
Pages (from-to)	4145–4155
Journal	ACS Energy Letters
Volume	8
DOIs	https://doi.org/10.1021/acsenergylett.3c01722 https://doi.org/10.1021/acsenergylett.3c01722
State	Published - 13 Sep 2023

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@article{5bdc6c12c32b4192bdf47b4fc6641e80,

title = "A Low-Lewis-Acid-Strength Cation Cs+-doped Double Perovskite for Fast and Durable Oxygen Reduction/evolutions on Protonic Ceramic Cells",

abstract = "Improving the reaction kinetics and durability of air electrodes on protonic ceramic cells is effective for their commercialization but challenging. Here, we report our electrode design via a low-Lewis-acid-strength cation (Cs+) doping strategy on a double perovskite oxide with a detailed formula of PrBa0.9Cs0.1Co2O5+δ (PBCsC). At 600 °C, the PBCsC electrode demonstrates a low area-specific resistance (ASR) value of 0.3 Ω cm2 within 100 h without significant degradation due likely to the electron pair shift by the polarization distribution of ionic Lewis acid strength at A and B sites. At 650 °C, a full cell with the PBCsC electrode displays an encouraging peak power density of 1.66 W cm–2 in the fuel cell (FC) mode, a high current density of −2.85 A cm–2 (at 1.3 V) in the electrolysis (EC) mode, good operational stability in dual modes of FC and EC, and promising cycling durability of 20 cycles in ∼80 h.",

author = "Yangsen Xu and Kang Xu and Feng Zhu and Fan He and Hua Zhang and Chuanyu Fang and Ying Liu and Yucun Zhou and YongMan Choi and Yu Chen",

year = "2023",

month = sep,

day = "13",

doi = "10.1021/acsenergylett.3c01722",

language = "American English",

volume = "8",

pages = "4145–4155",

journal = "ACS Energy Letters",

issn = "2380-8195",

publisher = "American Chemical Society",

}

TY - JOUR

T1 - A Low-Lewis-Acid-Strength Cation Cs+-doped Double Perovskite for Fast and Durable Oxygen Reduction/evolutions on Protonic Ceramic Cells

AU - Xu, Yangsen

AU - Xu, Kang

AU - Zhu, Feng

AU - He, Fan

AU - Zhang, Hua

AU - Fang, Chuanyu

AU - Liu, Ying

AU - Zhou, Yucun

AU - Choi, YongMan

AU - Chen, Yu

PY - 2023/9/13

Y1 - 2023/9/13

N2 - Improving the reaction kinetics and durability of air electrodes on protonic ceramic cells is effective for their commercialization but challenging. Here, we report our electrode design via a low-Lewis-acid-strength cation (Cs+) doping strategy on a double perovskite oxide with a detailed formula of PrBa0.9Cs0.1Co2O5+δ (PBCsC). At 600 °C, the PBCsC electrode demonstrates a low area-specific resistance (ASR) value of 0.3 Ω cm2 within 100 h without significant degradation due likely to the electron pair shift by the polarization distribution of ionic Lewis acid strength at A and B sites. At 650 °C, a full cell with the PBCsC electrode displays an encouraging peak power density of 1.66 W cm–2 in the fuel cell (FC) mode, a high current density of −2.85 A cm–2 (at 1.3 V) in the electrolysis (EC) mode, good operational stability in dual modes of FC and EC, and promising cycling durability of 20 cycles in ∼80 h.

AB - Improving the reaction kinetics and durability of air electrodes on protonic ceramic cells is effective for their commercialization but challenging. Here, we report our electrode design via a low-Lewis-acid-strength cation (Cs+) doping strategy on a double perovskite oxide with a detailed formula of PrBa0.9Cs0.1Co2O5+δ (PBCsC). At 600 °C, the PBCsC electrode demonstrates a low area-specific resistance (ASR) value of 0.3 Ω cm2 within 100 h without significant degradation due likely to the electron pair shift by the polarization distribution of ionic Lewis acid strength at A and B sites. At 650 °C, a full cell with the PBCsC electrode displays an encouraging peak power density of 1.66 W cm–2 in the fuel cell (FC) mode, a high current density of −2.85 A cm–2 (at 1.3 V) in the electrolysis (EC) mode, good operational stability in dual modes of FC and EC, and promising cycling durability of 20 cycles in ∼80 h.

U2 - 10.1021/acsenergylett.3c01722

DO - 10.1021/acsenergylett.3c01722

M3 - Article

SN - 2380-8195

VL - 8

SP - 4145

EP - 4155

JO - ACS Energy Letters

JF - ACS Energy Letters

ER -

A Low-Lewis-Acid-Strength Cation Cs+-doped Double Perovskite for Fast and Durable Oxygen Reduction/evolutions on Protonic Ceramic Cells

Abstract

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