Performance deviation analysis and reliability improvement during experimental development of lab-scale solid oxide single cells

Luo, Zhixin; Wang, Zehua; Zhu, Tianjiu; Song, Yufei; Lin, Zezhou; Jiang, San Ping; Zhu, Zhonghua; Shao, Zongping

doi:10.1039/d4ee02581d

Energy Environ. Sci.

2024

DOI: 10.1039/d4ee02581d

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Performance deviation analysis and reliability improvement during experimental development of lab-scale solid oxide single cells

Zhixin Luo,

Zehua Wang,

Tianjiu Zhu

et al.

Abstract: Solid oxide electrochemical cells (SOCs), an elevated-temperature energy storage and conversion device, are anticipated to play a pivotal role in future sustainable energy systems. Considerable research efforts have been devoted...

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2025

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Insights on proton‐conducting ceramic electrochemical cell fabrication

Meisel,

Huang,

Kim

et al. 2025

J Am Ceram Soc.

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This study investigates the key factors influencing sintering behavior and grain growth in (BCZYYb4411)–NiO negatrodes and BCZYYb electrolytes for protonic ceramic electrochemical cells (PCECs). Elastic net machine learning models are applied to a dataset of nearly 200 individual PCEC button cells fabricated over the course of more than 3 years to identify the key processing parameters that significantly affect negatrode shrinkage and electrolyte grain growth. The shrinkage rate of the BCZYYb4411–NiO negatrode is primarily governed by the solid‐state sintering behavior. Higher sintering temperatures, longer dwell times, and smaller NiO particle size are the primary determinants that lead to greater shrinkage. New or lightly‐used setters and more compact negatrodes are also found to increase shrinkage. Electrolyte grain growth is chiefly controlled by the liquid‐phase sintering of the BCZYYb phase. Increased cerium content on the B‐site leads to the largest enhancement in grain size, followed by increasing maximum sintering temperature. We find that the parameters used to tune the spray deposition of the electrolyte layer are also critical, with wetter and more uniform sprays promoting grain enlargement. Finally, we find that the sintering environment (e.g. presence/absence of sintering neighbors or sacrificial powders and the ambient humidity level) also substantially impacts both shrinkage and grain growth. This work comprehensively analyzes data from nearly 200 PCECs without “success bias,” meaning that poor performers and fabrication failures were included in the analysis. By doing so, the study provides valuable insight into the critical factors controlling shrinkage and grain growth in BCZYYb‐based PCECs. The findings offer foundational guidance for processing optimization that could lead to better repeatability, increased yields, and higher performance.

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Insights on proton‐conducting ceramic electrochemical cell fabrication

Meisel,

Huang,

Kim

et al. 2025

J Am Ceram Soc.

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show abstract

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Performance deviation analysis and reliability improvement during experimental development of lab-scale solid oxide single cells

Abstract: Solid oxide electrochemical cells (SOCs), an elevated-temperature energy storage and conversion device, are anticipated to play a pivotal role in future sustainable energy systems. Considerable research efforts have been devoted...

Cited by 1 publication

References 204 publications

Insights on proton‐conducting ceramic electrochemical cell fabrication

Insights on proton‐conducting ceramic electrochemical cell fabrication

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