Al3+ doped CeO2 for proton conducting fuel cells

Sarfraz; Shahzad Rasool; Muhammad Khalid; M. A.K.Yousaf Shah; Bin Zhu; Jung Sik Kim; Muhammad Imran Asghar; Nabeela Akbar; Wenjing Dong

doi:10.1007/s12613-024-2910-z

Al³⁺ doped CeO₂ for proton conducting fuel cells

Sarfraz, Shahzad Rasool, Muhammad Khalid, M. A.K.Yousaf Shah, Bin Zhu, Jung Sik Kim, Muhammad Imran Asghar, Nabeela Akbar, Wenjing Dong

Materials Science and Environmental Engineering

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

2 Citations (Scopus)

Abstract

Developing high ionic conducting electrolytes is crucial for applying proton-conducting fuel cell (PCFCs) practically. The current study investigates the effect of alumina on the structural, morphological, electrical, and electrochemical properties of CeO₂. Lattice oxygen vacancies are induced in CeO₂ by a general doping concept that enables fast ionic conduction at low-temperature ranges (300–500°C) for PCFCs. Rietveld refinement of the X-ray diffraction (XRD) patterns established the pure cubic fluorite structure of Al-doped CeO₂ (ADC) samples and confirmed Al ions’ fruitful integration in the CeO₂ lattice. The electronic structure of the alumina-doped ceria of the materials (10ADC, 20ADC, and 30ADC) has been investigated. As a result, it was found that the best composition of 30ADC-based electrolytes induced maximum lattice oxygen vacancies. The corresponding PCFC exhibited a maximum power output of 923 mW/cm² at 500°C. Moreover, the investigation proves the proton-conducting ability of alumina-doped ceria-based fuel cells by using an oxide ion-blocking layer.

Original language	English
Pages (from-to)	2253-2262
Number of pages	10
Journal	International Journal of Minerals, Metallurgy and Materials
Volume	31
Issue number	10
DOIs	https://doi.org/10.1007/s12613-024-2910-z
Publication status	Published - Oct 2024
Publication type	A1 Journal article-refereed

Keywords

doping
fast ions transportation
higher fuel cell performance
oxygen vacancies
proton ceramic fuel cells

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Geochemistry and Petrology
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/s12613-024-2910-z

Cite this

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title = "Al3+ doped CeO2 for proton conducting fuel cells",

abstract = "Developing high ionic conducting electrolytes is crucial for applying proton-conducting fuel cell (PCFCs) practically. The current study investigates the effect of alumina on the structural, morphological, electrical, and electrochemical properties of CeO2. Lattice oxygen vacancies are induced in CeO2 by a general doping concept that enables fast ionic conduction at low-temperature ranges (300–500°C) for PCFCs. Rietveld refinement of the X-ray diffraction (XRD) patterns established the pure cubic fluorite structure of Al-doped CeO2 (ADC) samples and confirmed Al ions{\textquoteright} fruitful integration in the CeO2 lattice. The electronic structure of the alumina-doped ceria of the materials (10ADC, 20ADC, and 30ADC) has been investigated. As a result, it was found that the best composition of 30ADC-based electrolytes induced maximum lattice oxygen vacancies. The corresponding PCFC exhibited a maximum power output of 923 mW/cm2 at 500°C. Moreover, the investigation proves the proton-conducting ability of alumina-doped ceria-based fuel cells by using an oxide ion-blocking layer.",

keywords = "doping, fast ions transportation, higher fuel cell performance, oxygen vacancies, proton ceramic fuel cells",

author = "Sarfraz and Shahzad Rasool and Muhammad Khalid and Shah, {M. A.K.Yousaf} and Bin Zhu and Kim, {Jung Sik} and Asghar, {Muhammad Imran} and Nabeela Akbar and Wenjing Dong",

note = "Publisher Copyright: {\textcopyright} University of Science and Technology Beijing 2024.",

year = "2024",

month = oct,

doi = "10.1007/s12613-024-2910-z",

language = "English",

volume = "31",

pages = "2253--2262",

journal = "International Journal of Minerals, Metallurgy and Materials",

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publisher = "University of Science and Technology Beijing",

number = "10",

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TY - JOUR

T1 - Al3+ doped CeO2 for proton conducting fuel cells

AU - Sarfraz,

AU - Rasool, Shahzad

AU - Khalid, Muhammad

AU - Shah, M. A.K.Yousaf

AU - Zhu, Bin

AU - Kim, Jung Sik

AU - Asghar, Muhammad Imran

AU - Akbar, Nabeela

AU - Dong, Wenjing

PY - 2024/10

Y1 - 2024/10

N2 - Developing high ionic conducting electrolytes is crucial for applying proton-conducting fuel cell (PCFCs) practically. The current study investigates the effect of alumina on the structural, morphological, electrical, and electrochemical properties of CeO2. Lattice oxygen vacancies are induced in CeO2 by a general doping concept that enables fast ionic conduction at low-temperature ranges (300–500°C) for PCFCs. Rietveld refinement of the X-ray diffraction (XRD) patterns established the pure cubic fluorite structure of Al-doped CeO2 (ADC) samples and confirmed Al ions’ fruitful integration in the CeO2 lattice. The electronic structure of the alumina-doped ceria of the materials (10ADC, 20ADC, and 30ADC) has been investigated. As a result, it was found that the best composition of 30ADC-based electrolytes induced maximum lattice oxygen vacancies. The corresponding PCFC exhibited a maximum power output of 923 mW/cm2 at 500°C. Moreover, the investigation proves the proton-conducting ability of alumina-doped ceria-based fuel cells by using an oxide ion-blocking layer.

AB - Developing high ionic conducting electrolytes is crucial for applying proton-conducting fuel cell (PCFCs) practically. The current study investigates the effect of alumina on the structural, morphological, electrical, and electrochemical properties of CeO2. Lattice oxygen vacancies are induced in CeO2 by a general doping concept that enables fast ionic conduction at low-temperature ranges (300–500°C) for PCFCs. Rietveld refinement of the X-ray diffraction (XRD) patterns established the pure cubic fluorite structure of Al-doped CeO2 (ADC) samples and confirmed Al ions’ fruitful integration in the CeO2 lattice. The electronic structure of the alumina-doped ceria of the materials (10ADC, 20ADC, and 30ADC) has been investigated. As a result, it was found that the best composition of 30ADC-based electrolytes induced maximum lattice oxygen vacancies. The corresponding PCFC exhibited a maximum power output of 923 mW/cm2 at 500°C. Moreover, the investigation proves the proton-conducting ability of alumina-doped ceria-based fuel cells by using an oxide ion-blocking layer.

KW - doping

KW - fast ions transportation

KW - higher fuel cell performance

KW - oxygen vacancies

KW - proton ceramic fuel cells

U2 - 10.1007/s12613-024-2910-z

DO - 10.1007/s12613-024-2910-z

M3 - Article

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SN - 1674-4799

VL - 31

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JO - International Journal of Minerals, Metallurgy and Materials

JF - International Journal of Minerals, Metallurgy and Materials

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