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Ultra-fast fabrication of tape-cast anode supports for solid oxide fuel cells via resonant acoustic mixing technology

Ultra-fast fabrication of tape-cast anode supports for solid oxide fuel cells via resonant acoustic mixing technology
Park, Jeong HwaBae, Gyeong TaekKim, Kyeong JoonJoh, Dong WooKim, DoyeubMyung, Jae-HaLee, Kang Taek
DGIST Authors
Lee, Kang Taek
Issue Date
Ceramics International, 45(9), 12154-12161
Article Type
Author Keyword
Tape-cast process; Anode support; Resonant acoustic mixing; Solid oxide fuel cells; Ultra-fast fabrication
Acoustic fields; Anodes; Ball milling; Binders; Fabrication; Fuel cells; Gas fuel purification; Mixing; Nickel oxide; Powders; Solvents; Yttria stabilized zirconia; Yttrium oxide; Zirconia; 3D reconstruction; Anode-support; Mixing sequences; Peak power densities; Resonant acoustic mixing; Solid oxide fuel cells (SOFCs); Ultra-fast; Yttria-stabilized zirconias (YSZ); Solid oxide fuel cells (SOFC)
Herein, for the first time, we demonstrate ultra-fast fabrication of a tape casted NiO-yttria stabilized zirconia (YSZ) anode support for solid oxide fuel cells (SOFCs) using resonant acoustic mixing (RAM) technology. Due to its characteristics of non-contact and high-intensity acoustic field-assisted mixing, NiO-YSZ tape-cast slurry is prepared via a RAM process within ∼0.5 h, > 140 times faster than use of a conventional ball-milling (BM) process (∼72 h). During the RAM process, liquid binders more effectively penetrate into soft agglomerated ceramic powders and covered larger surface area than the case of BM process. The optimization of RAM procedure requires more subdivided mixing sequence and higher content of binders and plasticizers compared to that of the BM. Despite drastically reduced mixing time, the microstructures of RAM Ni-YSZ anode, quantified via a 3D reconstruction, are statistically identical to that of BM Ni-YSZ. The SOFC employing RAM Ni-YSZ anode support achieves 0.55 W/cm 2 at 750 °C in peak power density and exhibits high durability for 300 h without noticeable degradation. Thus, our results demonstrate that the RAM process is a highly effective and ultra-fast mixing technology to produce high performance SOFC components. © 2019 Elsevier Ltd and Techna Group S.r.l.
Pergamon Press Ltd.
Related Researcher
  • Author Lee, Kang Taek AECSL(Advanced Energy Conversion and Storage Lab)
  • Research Interests Advanced energy conversion and storage systems; Solid-state Electrochemical Energy Devices; All solid-state batteries; low-temperature solid oxide fuel cells(SOFCs); 신 에너지 변환 및 저장 시스템; Solid-state Electrochemical Energy Devices; 차세대 전고체 이차전지(solid-state batteries) 및 저온화 고체산화물 연료전지(LT-SOFCs)
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Department of Energy Science and EngineeringAECSL(Advanced Energy Conversion and Storage Lab)1. Journal Articles

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