High surface area LaNiO3 electrodes for oxygen electrocatalysis in alkaline media |
| |
Authors: | C. O. Soares M. D. Carvalho M. E. Melo Jorge A. Gomes R. A. Silva C. M. Rangel M. I. da Silva Pereira |
| |
Affiliation: | 1.Departamento de Química e Bioquímica, C.C.M.M., Faculdade de Ciências,Universidade de Lisboa,Campo Grande,Portugal;2.Fuel Cells and Hydrogen Unit,Laboratório Nacional de Energia e Geologia,Lisbon,Portugal |
| |
Abstract: | LaNiO3 coatings on nickel-foam supports were prepared by brush painting. The electrochemical properties were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Comparative studies were performed with LaNiO3-pelleted electrodes. The roughness factors were determined by CV and found to be 5,208 ± 350 and 4,037 ± 250 for the pelleted and coated electrodes, respectively. EIS measurements confirm the results obtained by CV. Values lower than 0.3 were calculated for the morphology factors for both electrodes, indicating low electrochemical porosity. The experimental method used in this work to synthesise the oxide coupled with the use of Ni foam as support has proved to be very effective in producing oxide electrodes with surface areas higher than those referred to in relevant literature. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|