Development and characterization of highly stable electrode inks for low-temperature ceramic fuel cells
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-12-30
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Language
en
Pages
10
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Journal of Power Sources, Volume 552, pp. 1-10
Abstract
Inkjet printing is a potential contactless and mask-free additive manufacturing approach for solid oxide fuel cells. Here, a highly stable cathode ink using La0.6Sr0.4Co0.2Fe0.8O3 was developed and characterized with particle size analysis, viscosity, surface tension, density, and thermal analysis. Both fresh and 6-months stored inks showed excellent jetability behavior with a Z number of 2.77 and 3.45, respectively. The ink was successfully inkjet-printed on a (LiNaK)2CO3-Gd:CeO2 porous electrolyte substrate to fabricate a symmetric cell. The electrochemical impedance spectroscopy measurements showed that at 550 °C the inkjet printing lowered the ohmic resistance to one-third (from 1.05 Ω cm2 to 0.37 Ω cm2) and the mass diffusion resistance by 4.25 times (from 6.09 Ω cm2 to 1.43 Ω cm2) as compared to drop-casted cell by creating a hierarchical porous structure and increasing reaction sites. Successful inkjet printing of the functional electrode material opens up a new avenue for the fabrication of the low-temperature ceramic fuel cells.Description
Funding Information: The authors are thankful to Academy of Finland (Grant No. 13329016 , 13322738 ) for the financial support. Dr. Asghar also thanks the Hubei Overseas Talent 100 program.
Keywords
Ceramics, Electrode, Inkjet printing, Solid oxide fuel cell, Stability
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Citation
Golkhatmi, S Z, Asghar, M I & Lund, P D 2022, ' Development and characterization of highly stable electrode inks for low-temperature ceramic fuel cells ', Journal of Power Sources, vol. 552, 232263, pp. 1-10 . https://doi.org/10.1016/j.jpowsour.2022.232263