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J. Korean Ceram. Soc. > Volume 57(3); 2020 > Article
Journal of the Korean Ceramic Society 2020;57(3): 338-344.
doi: https://doi.org/10.1007/s43207-020-00034-z
Catalytic characteristics of Ni(B)‑coated YSZ powder by neutral electroless plating
Sa‑Kyun Rha1, Mi‑Jai Lee2, Youn‑Seoung Lee3
1Department of Advanced Materials Engineering, Hanbat National University, Daejeon 305‑719, South Korea
2Optic and Display Material, Korea Institute of Ceramic Engineering and Technology, Jinju‑si 52851, South Korea
3Department of Information Communication Engineering, Hanbat National University, Daejeon 305‑719, South Korea
Correspondence  Youn‑Seoung Lee ,Email: yslee@hanbat.ac.kr
Received: January 2, 2020; Revised: February 11, 2020   Accepted: February 13, 2020.  Published online: March 31, 2020.
ABSTRACT
In this study, an eco-friendly, electroless, and neutral (pH 7.0) process of nickel plating at low temperature (40 °C) was used to develop an anode catalyst for a solid oxide fuel cell (SOFC). Electroless Ni(B) plating on yttria-stabilized zirconia (YSZ) particles resulted in the formation of a Ni(B)/YSZ core–shell. We examined the crystallinity and uniformity of the Ni(B) layer on the plated core–shell powder and found that it had an amorphous-like structure. In addition, we evaluated the rate of carbon deposition and characteristics of the SOFC anode catalyst: the carbon deposition rate was 19.42%, H2 selectivity was nearly 88% at 800 °C, and methane conversion was maintained at 100% at temperatures above 850 °C. It was ascertained that in the high-temperature region, which is the main operating temperature of SOFCs, the amorphous-like microstructure of the Ni(B) layer on the Ni(B)–YSZ core–shell powder played an important role in enhancing these properties.
Key words: Ni(B)–YSZ · Core–shell · Electroless plating · Eco-friendly process
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