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Development of zirconia-magnesia/zirconia-yttria composite solid electrolytes
(ELSEVIER SCIENCE BV, 2008)
Composite solid electrolytes were prepared by thoroughly mixing ZrO2:8 mol% MgO (Z8Mg) and ZrO(2):3 mol% Y(2)O(3) (Z3Y) ceramic powders followed by pressing and sintering at 1500 degrees C/1 h. The properties of the sintered ...
Stabilization of the cubic perovskite in the system La1-xBa xCo1-yFeyO3-δ (0.7 ≤ x ≤ 0.9) and its electrochemical performance as cathode materials for intermediate-temperature solid oxide fuel cells
(Elsevier Science, 2014-02-01)
The effects of the substitution of Co by Fe on the crystal chemistry and electrode reaction of the system La1-xBaxCo 1-yFeyO3-δ (0.7 ≤ x ≤ 0.9), are investigated. The incorporation of Fe stabilizes the cubic perovskite and ...
Effect of Nb5 + content on the high temperature properties of the mixed conductors system La1 − xBaxCo1 − yNbyO3 − δ with 0.6 ≤ x ≤ 1.0 and 0 ≤ y ≤ 0.4
(Elsevier Science, 2017-02)
The replacement of Co by Nb in the La1 − xBaxCo1 − yNbyO3 − δ (0.6 ≤ x ≤ 1.0) system and its effects on phase stability and high temperature properties of the cubic perovskite phase were investigated by X-ray diffraction, ...
Fingerprint of semi-crystalline structure memory in the thermal and ionic conduction properties of amorphous ureasil-polyether hybrid solid electrolytes
(2022-02-04)
Correlations among the structure, thermal properties, and ionic conductivity of solid polymer electrolytes (SPEs) were studied using a ureasil-polyethylene oxide (U-PEO) organic-inorganic hybrid prepared according to a ...
Effects of neodymium doping on oxygen reduction activity in Pr2−xNdxNiO4+δ cathodes
(Elsevier Science, 2020-04)
Single phase Pr2−xNdxNiO4+δ (x = 0, 0.3, 1, 1.7 and 2) (PNNO) compounds were synthetized by a sol-gel route. The thermal behavior of these compounds has been studied by Differential Thermal Analysis (DTA) and High Temperature ...
Revestimentos de nanocompósitos de fusion-bonded epoxy com óxido de grafeno reduzido em aço carbono : análises tribológicas e eletroquímicas
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA QUÍMICAPrograma de Pós-Graduação em Engenharia QuímicaUFMG, 2020-07-31)
In this work, the influence of the addition of reduced graphene oxide (RGO) to the Fusion-Bonded Epoxy (FBE) matrix was evaluated. The analyzes of thermogravimetry (TG), spectroscopy in the infrared region with Fourier ...
Efeitos da adição de resíduos de cinza da casca de café na microestrutura e propriedades de cerâmicas à base de cordierita
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIA E ENGENHARIA DE MATERIAIS, 2021-12-15)
Cordierite is one of the compounds of the MgO-Al2O3-SiO2 system that presents the
lowest thermal expansion coefficient among the inorganic oxides. Despite this advantage,
which results in high thermal shock resistance, ...