Herrnawan, Erik Lee, Gyun Sang Kim, Ghun Sik Ham, Hyung Chul Han, Jonghee Yoon, Sung Pil 2024-01-20T00:34:20Z 2024-01-20T00:34:20Z 2021-09-04 2017-09 0272-8842 https://pubs.kist.re.kr/handle/201004/122368 A densification process based on chemical/electrochemical vapor deposition (CVD/EVD) was successfully performed to produce a dense and gas-tight YSZ electrolyte on a metal support for solid oxide fuel cell applications. Micro Ni/YSZ (7:3 wt%) was deposited by screen printing and YSZ was deposited by an atmospheric plasma spray (APS) process on a metal support prior to the CVD/EVD refinement process. The initial nitrogen permeation flux through the YSZ layer prepared by the APS process was in the range of 1.8-2.7x 10(-7) mol/s cm(2) at 25 degrees C, which shows that residual pores/pinholes existed in the YSZ layer. After YSZ density refinement by the CVD/EVD process, a dense and gas-tight YSZ layer can be obtained after five hours of deposition. An additional 4-7 pm of YSZ was observed after the refinement process was finished. The average film growth rate during CVD/EVD was approximately 1.14 mu m/h. From XRD analysis, the YSZ layer prepared after CVD/EVD showed a dominant cubic structure; nonetheless, a secondary phase was also observed. From the SEM and elemental mapping analyses, the YSZ layers showed a homogeneous distribution on the surface of the metal support. The present results showed that the CVD/EVD process is capable of refining the YSZ electrolyte density/tightness by plugging residual pores/pinholes, along with increasing the YSZ thickness, for application in metal-supported solid oxide fuel cells. English ELSEVIER SCI LTD YTTRIA-STABILIZED ZIRCONIA THIN-FILMS GROWTH MORPHOLOGY CVD Densification of an YSZ electrolyte layer prepared by chemical/electrochemical vapor deposition for metal-supported solid oxide fuel cells Article 10.1016/j.ceramint.2017.05.085 1 CERAMICS INTERNATIONAL, v.43, no.13, pp.10450 - 10459 CERAMICS INTERNATIONAL 43 13 10450 10459 scie scopus 000406438700112 2-s2.0-85019133147 Materials Science, Ceramics Materials Science Article YTTRIA-STABILIZED ZIRCONIA THIN-FILMS GROWTH MORPHOLOGY CVD YSZ Metal supports Chemical/electrochemical vapor deposition (CVD/EVD) Metal-supported solid oxide fuel cells (MS-SOFCs)