Effect of hydration of solid electrolytes on the behavior of boundaries Na0.5WO3/Na+-solid electrolyte

被引：5

作者：

Bukun, N ^{[1
]}

Leonova, L ^{[1
]}

Ermolaeva, S ^{[1
]}

Nadkhina, O ^{[1
]}

Dobrovolsky, Y ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka, Russia

来源：

SOLID STATE IONICS | 2003年 / 157卷 / 1-4期

关键词：

solid electrolyte; hydration; impedance; exchange current;

D O I：

10.1016/S0167-2738(02)00212-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of hydration of sodium-conducting solid electrolytes (SEs) on the reversibility of Na0.5WO3/Na+-solid electrolyte interfaces was studied. It was shown that solid electrolytes with higher tendency to hydration form the interfaces with higher room-temperature reversibility with respect to Na+ ions. According to IR spectra, the ability to hydration decreases in series Na5GdSi4O12>Na3Zr2Si2PO12>Na3SC2(PO4)(3). It is supposed that hydrated layers at the surfaces of solid electrolyte grains exhibit a more disordered structure than the bulk of the grains and, thus, promote the electrochemical reactions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：215 / 219

页数：5