Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5150432 | Solid State Ionics | 2017 | 5 Pages |
Abstract
Novel nanocrystalline mixed conductors were obtained by thermal nanocrystallisation of lithium-iron-borate glasses (nominally LiFeBO3) prepared via melt-quenching method. After heat treatment, a glass-ceramics consisting of FeBO3 and LiFeBO3 phases was obtained. Grain sizes, estimated using Scherrer formula, were 45-50 nm and 70-80 nm, respectively. Value of electrical conductivity of the initial glass was estimated as 5.8·10â12 S cmâ1. After annealing at 475 °C, a growth by a factor 2.4·106 was observed, leading to final conductivity value  1.4·10-5S cmâ1 at room temperature. The activation energy of electronic conductivity was lowered from 0.81 eV for glass to 0.18 eV for thermally treated material.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
PrzemysÅaw P. Michalski, Tomasz K. Pietrzak, Jan L. NowiÅski, Marek Wasiucionek, Jerzy E. Garbarczyk,