title: Discussion on a percolating conducting network of a composite thin-film electrode (≤1 μm) for micro-solid oxide fuel cell application.
abstract: Ni/Gd0.1Ce0.9O(2-δ) (Ni/GDC) and La0.6Sr0.4Fe0.8Co0.2O(3-δ)/Gd0.1Ce0.9O(2-δ) (LSCF/GDC) porous thin-film electrodes with thicknesses between 120 and 500 nm were synthesized through templated sol-gel chemistry coupled with the dip-coating process and heat treatment. The thin films consist of two interpenetrated networks made of pores and inorganic materials. The porous structure was composed of multi-scale pores with dimensions ranging from macro- to nanosize and with an oriented columnar structure. The dimension of the percolation network is discussed as a function of the chemical nature of the percolating components and the particle/thickness ratio. A three-dimensional percolation network is achieved in the LSCF/GDC composite, while a two-dimensional percolation network is observed for the Ni/GDC composite. This difference is related to the microstructure of the composite thin film. An anisotropic columnar structure is observed for Ni/GDC, while an isotropic structure is achieved for LSCF/GDC.
authors: Laboratoire de Chimie de La Matière Condensée de Paris, UMR7574, UPMC Univ Paris 06, Sorbonne Universités , 11 Place Marcellin Berthelot, 75231 Paris, France.
authors: Guillaume
authors: G
authors: Muller
authors: Armelle
authors: A
authors: Ringuedé
authors: Christel
authors: C
authors: Laberty-Robert