title: The nature of phase separation in a Ru-Sn-O ternary oxide electrocatalyst.
abstract: A phase stability diagram of ruthenium-zirconium oxide (Ru-Sn-O) was constructed by a combination of ab initio density functional theory and thermodynamic calculations. Results suggest that the phase separation/segregation that has been reported in the literature for the RuO(2)-SnO(2) system is through a typical spinodal decomposition mechanism. Ru(0.45)Sn(0.55)O(2) films were prepared by thermal co-decomposition of precursors at 500 °C for varied duration. Quantitative phase analyses of the prepared films based on X-ray diffraction and high-resolution transmission electron microscopy confirmed the spinodal nature of the phase separation. The present fundamental study provides a theoretical guideline for the phase and microstructure design of Ru-Sn-O based mixed oxides for electrocatalysis applications.
authors: College of Materials Science and Engineering, Fuzhou University, Fuzhou, Fujian 350108, China.
authors: Xin
authors: X
authors: Wang
authors: Fenyong
authors: F
authors: Deng
authors: Zhongzhi
authors: Z
authors: Tang
authors: Bo
authors: B
authors: Wu
authors: Dian
authors: D
authors: Tang
authors: Wei
authors: W
authors: Lin