Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying

X. M. Wang; C. J. Li; C. X. Li; G. J. Yang

doi:10.1361/cp2009itsc0012

Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying

X. M. Wang
, C. J. Li
, C. X. Li
, G. J. Yang

School of Materials Science and Engineering

Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Plasma-sprayed yttria-stabilized zirconia (YSZ) can be potentially employed as electrolyte coating in solid oxide fuel cells (SOFCs). The formation of a convex coating surface with semi-melted particles will increase the specific surface area and subsequently improve the output performance of SOFCs. However, using completely molten YSZ particles during plasma spraying leads to the formation of locally flat surface owing to the spreading of the liquid droplets on impact. In this study, flame spraying was employed to deposit YSZ particles on YSZ substrate using surface-melted particles. 4.5 mol% YSZ powder particles were used as spray materials. The deposition was carried out at different spray distances on the YSZ substrate preheated to 650°C. The surface morphology of YSZ particles was characterized by SEM. The bonding of YSZ particles with the underlying YSZ substrate was examined from cross section. The electrochemical behavior of single cell with structured cathode was analyzed by the electrochemical impedance spectroscopy. The results show that spray distance have significant influence on the morphology of deposited YSZ particles. The cathode polarization of a structured cathode was decreased by about 30% compared to a flat cathode.

Original language	English
Title of host publication	Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009
Pages	12-17
Number of pages	6
DOIs	https://doi.org/10.1361/cp2009itsc0012
State	Published - 2009
Event	Expanding Thermal Spray Performance to New Markets and Applications - 2009 International Thermal Spray Conference, ITSC 2009 - Las Vegas, NV, United States Duration: 4 May 2009 → 7 May 2009

Publication series

Name	Proceedings of the International Thermal Spray Conference

Conference

Conference	Expanding Thermal Spray Performance to New Markets and Applications - 2009 International Thermal Spray Conference, ITSC 2009
Country/Territory	United States
City	Las Vegas, NV
Period	4/05/09 → 7/05/09

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10.1361/cp2009itsc0012

Cite this

Wang, X. M., Li, C. J., Li, C. X., & Yang, G. J. (2009). Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying. In Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009 (pp. 12-17). (Proceedings of the International Thermal Spray Conference). https://doi.org/10.1361/cp2009itsc0012

Wang, X. M. ; Li, C. J. ; Li, C. X. et al. / Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying. Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009. 2009. pp. 12-17 (Proceedings of the International Thermal Spray Conference).

@inproceedings{9294bccfa9fc45caa73cc8d13b1efae3,

title = "Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying",

abstract = "Plasma-sprayed yttria-stabilized zirconia (YSZ) can be potentially employed as electrolyte coating in solid oxide fuel cells (SOFCs). The formation of a convex coating surface with semi-melted particles will increase the specific surface area and subsequently improve the output performance of SOFCs. However, using completely molten YSZ particles during plasma spraying leads to the formation of locally flat surface owing to the spreading of the liquid droplets on impact. In this study, flame spraying was employed to deposit YSZ particles on YSZ substrate using surface-melted particles. 4.5 mol\% YSZ powder particles were used as spray materials. The deposition was carried out at different spray distances on the YSZ substrate preheated to 650°C. The surface morphology of YSZ particles was characterized by SEM. The bonding of YSZ particles with the underlying YSZ substrate was examined from cross section. The electrochemical behavior of single cell with structured cathode was analyzed by the electrochemical impedance spectroscopy. The results show that spray distance have significant influence on the morphology of deposited YSZ particles. The cathode polarization of a structured cathode was decreased by about 30\% compared to a flat cathode.",

author = "Wang, \{X. M.\} and Li, \{C. J.\} and Li, \{C. X.\} and Yang, \{G. J.\}",

year = "2009",

doi = "10.1361/cp2009itsc0012",

language = "英语",

isbn = "9781615030040",

series = "Proceedings of the International Thermal Spray Conference",

pages = "12--17",

booktitle = "Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009",

note = "Expanding Thermal Spray Performance to New Markets and Applications - 2009 International Thermal Spray Conference, ITSC 2009 ; Conference date: 04-05-2009 Through 07-05-2009",

}

Wang, XM, Li, CJ , Li, CX & Yang, GJ 2009, Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying. in Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009. Proceedings of the International Thermal Spray Conference, pp. 12-17, Expanding Thermal Spray Performance to New Markets and Applications - 2009 International Thermal Spray Conference, ITSC 2009, Las Vegas, NV, United States, 4/05/09. https://doi.org/10.1361/cp2009itsc0012

Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying. / Wang, X. M.; Li, C. J.; Li, C. X. et al.
Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009. 2009. p. 12-17 (Proceedings of the International Thermal Spray Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying

AU - Wang, X. M.

AU - Li, C. J.

AU - Li, C. X.

AU - Yang, G. J.

PY - 2009

Y1 - 2009

N2 - Plasma-sprayed yttria-stabilized zirconia (YSZ) can be potentially employed as electrolyte coating in solid oxide fuel cells (SOFCs). The formation of a convex coating surface with semi-melted particles will increase the specific surface area and subsequently improve the output performance of SOFCs. However, using completely molten YSZ particles during plasma spraying leads to the formation of locally flat surface owing to the spreading of the liquid droplets on impact. In this study, flame spraying was employed to deposit YSZ particles on YSZ substrate using surface-melted particles. 4.5 mol% YSZ powder particles were used as spray materials. The deposition was carried out at different spray distances on the YSZ substrate preheated to 650°C. The surface morphology of YSZ particles was characterized by SEM. The bonding of YSZ particles with the underlying YSZ substrate was examined from cross section. The electrochemical behavior of single cell with structured cathode was analyzed by the electrochemical impedance spectroscopy. The results show that spray distance have significant influence on the morphology of deposited YSZ particles. The cathode polarization of a structured cathode was decreased by about 30% compared to a flat cathode.

AB - Plasma-sprayed yttria-stabilized zirconia (YSZ) can be potentially employed as electrolyte coating in solid oxide fuel cells (SOFCs). The formation of a convex coating surface with semi-melted particles will increase the specific surface area and subsequently improve the output performance of SOFCs. However, using completely molten YSZ particles during plasma spraying leads to the formation of locally flat surface owing to the spreading of the liquid droplets on impact. In this study, flame spraying was employed to deposit YSZ particles on YSZ substrate using surface-melted particles. 4.5 mol% YSZ powder particles were used as spray materials. The deposition was carried out at different spray distances on the YSZ substrate preheated to 650°C. The surface morphology of YSZ particles was characterized by SEM. The bonding of YSZ particles with the underlying YSZ substrate was examined from cross section. The electrochemical behavior of single cell with structured cathode was analyzed by the electrochemical impedance spectroscopy. The results show that spray distance have significant influence on the morphology of deposited YSZ particles. The cathode polarization of a structured cathode was decreased by about 30% compared to a flat cathode.

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U2 - 10.1361/cp2009itsc0012

DO - 10.1361/cp2009itsc0012

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SN - 9781615030040

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BT - Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009

T2 - Expanding Thermal Spray Performance to New Markets and Applications - 2009 International Thermal Spray Conference, ITSC 2009

Y2 - 4 May 2009 through 7 May 2009

ER -

Wang XM, Li CJ , Li CX , Yang GJ. Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying. In Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009. 2009. p. 12-17. (Proceedings of the International Thermal Spray Conference). doi: 10.1361/cp2009itsc0012

Microstructures and electrochemical behavior of LSM cathode with a structured electrolyte modified by flame spraying

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