Development of a Geometrical Model for Optimizing Porous Anode Microstructure of Solid Oxide Fuel Cells

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Noboru Nonaka³  Makio Naito¹  Hidetoshi Mori³  Hiroya Abe¹  Mitsukuni Mizuno² 

[1] Joining and Welding Research Institute, Osaka University;Department of Mechanical Engineering, Aichi Institute of Technology;Department of Robot Systems Engineering, Aichi University of Technology

关键词: Triple-Phase-Boundary;    Solid Oxide Fuel Cell;    Composite Anode Electrode;    Percolation Cluster;    Coordination Number;   

DOI  :  10.1252/jcej.07WE169

来源: Maruzen Company Ltd

【 摘 要 】

References(15)Cited-By(1)A geometrical model has been developed to optimize the microstructure of porous composite anode electrodes of solid oxide fuel cells. The model takes into account the coordination number theory applied to a random packing of binary particle mixture, together with the percolation theory introduced to provide percolation paths for electrons and ions. The predictions confirm that the effective triple-phase-boundary (TPB) index deduced from a geometric analysis depends on the pore size as well as the characteristic parameters including particle radius ratio, contact angle and composition ratio. The influence of pore size on the effective TPB index is particularly conspicuous, suggesting that the pore size optimization should improve the effective TPB index significantly.

【 授权许可】

Unknown