ler totalmente Effect of Scandium Doping on Novel Mixed-Conducting Perovskite Oxides

This book examines the impact of scandium (Sc³⁺) doping on SrCoO3-δ perovskite oxides and their potential as oxygen permeating membranes. The research explores an alternative to traditional cryogenic distillation for oxygen production using mixed ionic and electronic conducting (MIEC) oxide membranes, which offer 100% oxygen selectivity. Through extensive experimentation, the study found that scandium doping levels significantly affect the material's structure and performance, with optimal results achieved at 5-10 mol% scandium concentration. At these levels, the material forms a stable cubic perovskite structure that demonstrates superior electrical conductivity and oxygen permeation compared to the parent compound. The research revealed that scandium doping changes the rate-limiting step from bulk diffusion to surface exchange, with electron conduction occurring through B-O-B bonds. However, higher scandium content (above 50%) proves detrimental, blocking electron exchange between cobalt ions and oxygen. The optimized compositions (particularly SSC0.05 and SSC0.1) show promising potential for applications in oxygen separation, fuel cells, and energy-efficient continuous oxygen production. The work provides valuable insights into the relationship between dopant concentration, structure, and performance in these advanced ceramic materials.

Procurando Effect of Scandium Doping on Novel Mixed-Conducting Perovskite Oxides? Aqui você encontra tudo sobre este livro de Mohammad Fikrey Roslan em 20 de novembro de 2024. Nesta página estão a descrição da obra, os detalhes da edição (34 páginas) e os formatos disponíveis para baixar: pdf, epub, txt, djvu. Se você gosta de Livros Internacionais, Ciências Tecnológicas, Física, Estática, explore também outros títulos da mesma categoria no Encontrando os melhores livros. Veja ainda as outras obras de Mohammad Fikrey Roslan em nosso catálogo.