论文信息 - Fast Na+-ion transport in skeleton structures

Fast Na+-ion transport in skeleton structures

Skeleton structures have been explored experimentally for fast Na+-ion transport. A skeleton structure consists of a rigid skeletal array of atoms stabilized by electrons donated by alkali ions partially occupying sites in a three dimensionally linked interstitial space. Fast Na+-ion transport was demonstrated in several structures, and the system Na1+xZr2P3−xSixO12 has a Na+-ion resistivity at 300°C of ϱ300 ≲ 5Ω-cm for x ≈ 2, which is competitive with the best β″-alumina. An activation energy ea ≈ 0.29 eV is about 0.1 eV larger than that of β″-alumina.

[1] J. T. Kummer,et al. Ion exchange properties of and rates of ionic diffusion in beta-alumina , 1967 .

[2] R. S. Gordon,et al. Hot‐Pressing of Li2O‐Stabilized β″‐Alumina , 1974 .

[3] Raymond R. Ridgway,et al. The Preparation and Properties of So‐Called “Beta Alumina” , 1936 .

[4] J. Paasiv́irta,et al. The Crystal Structure of NaM2IV(PO4)3; MeIV = Ge, Ti, Zr. , 1968 .

[5] P. M. Raccah,et al. Pb2M2O7−x (M = Ru, Ir, Re) — Preparation and properties of oxygen deficient pyrochlores , 1969 .

[6] D. Reinen,et al. Verbindungen mit Cu2+-ionen auf den a-plaetzen von perowskiten ABO3 , 1971 .

[7] L. Pauling. The Nature Of The Chemical Bond , 1939 .

[8] C. Michel,et al. Sur de nouveaux pyrochlores ASbWO6 (A = K, Rb, Cs, Tl) , 1973 .

[9] C. Michel,et al. Proprietes d'echange d'ions des pyrochlores AB2O6—I Preparation et etude structurale de nouveaux pyrochlores AMWO6 . H2O (A = Li, Na; M = Nb, Ta, Sb) , 1975 .

[10] J. Goodenough,et al. Crystal chemistry in the system MSbO3 , 1974 .

[11] W. Brower,et al. Flux synthesis of cubic potassium antimonate , 1974 .

[12] J. Fourquet,et al. Les pyrochlores AIB2X6: Mise en evidence de l'occupation par le cation AI de nouvelles positions cristallographiques dans le groupe d'espace fd3m , 1973 .

[13] Nils Schrewelius. Röntgenuntersuchung der Verbindungen NaSb(OH)6, NaSbF6, NaSbO3 und gleichartiger Stoffe , 1938 .