Applications of quantum dot membrane electrolytes in LT-SOFCs

Cai, Hong; Zheng, Dan; Chen, Xia; Wang, Xunying; Dong, Wenjing; Ganesh, K. Sivajee; Wang, Hao; Wang, Baoyuan

doi:10.1016/j.jallcom.2022.167213

Journal of Alloys and Compounds

2022

DOI: 10.1016/j.jallcom.2022.167213

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Applications of quantum dot membrane electrolytes in LT-SOFCs

Hong Cai

Dan Zheng

Xia Chen

et al.

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Cited by 3 publications

References 34 publications

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Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO₂/β"‐Al₂O₃ Heterostructure

Zhang,

Zhu,

Zhao

et al. 2024

Advanced Science

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Semiconductor ion fuel cells (SIFCs) have demonstrated impressive ionic conductivity and efficient power generation at temperatures below 600 °C. However, the lack of understanding of the ionic conduction mechanisms associated with composite electrolytes has impeded the advancement of SIFCs toward lower operating temperatures. In this study, a CeO2/β″‐Al2O3 heterostructure electrolyte is introduced, incorporating β″‐Al2O3 and leveraging the local electric field (LEF) as well as the manipulation of the melting point temperature of carbonate/hydroxide (C/H) by Na+ and Mg2+ from β″‐Al2O3. This design successfully maintains swift interfacial conduction of oxygen ions at 350 °C. Consequently, the fuel cell device achieved an exceptional ionic conductivity of 0.019 S/cm and a power output of 85.9 mW/cm2 at 350 °C. The system attained a peak power density of 1 W/cm2 with an ultra‐high ionic conductivity of 0.197 S/cm at 550 °C. The results indicate that through engineering the LEF and incorporating the lower melting point C/H, there approach effectively observed oxygen ion transport at low temperatures (350 °C), effectively overcoming the issue of cell failure at temperatures below 419 °C. This study presents a promising methodology for further developing high‐performance semiconductor ion fuel cells in the low temperature range of 300–600 °C.

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Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO₂/β"‐Al₂O₃ Heterostructure

Zhang,

Zhu,

Zhao

et al. 2024

Advanced Science

View full text Add to dashboard Cite

show abstract

Improving the electrochemical energy conversion of solid oxide fuel cells through the interface effect in La0.6Sr0.4Co0.2Fe0.8O3-δ-BaTiO3-δ electrolyte

Cai

Zheng

Chen

et al. 2023

Journal of Colloid and Interface Science

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Interfacial ionic transportation in composite electrolyte induced by element segregation for low temperature fuel cells

Hu,

Dong,

Zhang

et al. 2024

Journal of Power Sources

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Applications of quantum dot membrane electrolytes in LT-SOFCs

Cited by 3 publications

References 34 publications

Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO₂/β"‐Al₂O₃ Heterostructure

Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO₂/β"‐Al₂O₃ Heterostructure

Improving the electrochemical energy conversion of solid oxide fuel cells through the interface effect in La0.6Sr0.4Co0.2Fe0.8O3-δ-BaTiO3-δ electrolyte

Interfacial ionic transportation in composite electrolyte induced by element segregation for low temperature fuel cells

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Applications of quantum dot membrane electrolytes in LT-SOFCs

Cited by 3 publications

References 34 publications

Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO2/β"‐Al2O3 Heterostructure

Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO2/β"‐Al2O3 Heterostructure

Improving the electrochemical energy conversion of solid oxide fuel cells through the interface effect in La0.6Sr0.4Co0.2Fe0.8O3-δ-BaTiO3-δ electrolyte

Interfacial ionic transportation in composite electrolyte induced by element segregation for low temperature fuel cells

Contact Info

Product

Resources

About

Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO₂/β"‐Al₂O₃ Heterostructure

Observation of Fast Low‐Temperature Oxygen Ion Conduction in CeO₂/β"‐Al₂O₃ Heterostructure