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Synthesis and Characterization of Nanoscale Ce ( x ) Ru (1− x ) O 2 Coatings With Electrochemical Activity
Author(s) -
Zhang Teng,
Tang Dian,
Shao Yanqun,
Ke Xuebiao,
You Shaoxin
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01503.x
Subject(s) - electrochemistry , scanning electron microscope , materials science , cyclic voltammetry , electrode , analytical chemistry (journal) , nanoscopic scale , ruthenium , metal , characterization (materials science) , nuclear chemistry , chemical engineering , nanotechnology , chemistry , catalysis , metallurgy , composite material , organic chemistry , engineering
The nanoscale coatings of Ce x Ru 1− x O 2 ( x =0, 0.25, 0.5, and 0.75 mol%) with electrochemical activity were investigated. The characterization of the resulting materials was conducted by X‐ray diffraction (XRD), scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET), and cyclic voltammetry test (CV). It is shown through XRD analysis that there is no metallic ruthenium in those samples containing more than 50 mol% Ce. The results of SEM and BET show that the presence of CeO 2 changes the morphology as well as the surface areas of the coatings in electrodes. The electrochemical activity also shows a strong dependence on the CeO 2 content in the coatings under the CV test. The electrode of Ce 0.5 Ru 0.5 O 2 has the highest surface area (19.13 m 2 /g) and the best electrochemical property (voltammetric charge of 180.64 mC/cm 2 ) among the binary compositions.