Lithium intercalation in Ln13NbO3 perovskite-type phases (Ln = La, Nd)

摘要: Abstract Lithium can be intercalated either chemically or electrochemically in Ln 1 3 NbO perovskite-type phases (Ln = La,Nd). In the starting material electrostatic repulsion between rare earth ions leads to relative ordering within NbO3 network. Every other plane of perovskite cavities contains earths. The related formula is □ 2 □′ 6 ) . both systems, solid solutions are observed first part intercalation reaction. While almost all filled neodymium phases, higher ionic character LaO bonds prevents practically sites from Li intercalation. For highest rates which attain 0.80, a new site involved. physical properties materials have been described connection with electrochemical behavior. Whatever rate, d electrons remain localized and electronic behavior characterized by hopping mechanism.