Stability and Conductivity of In3+-Doped SnP2O7 with Varying Phosphorous to Metal Ratios

被引：15

作者：

Kreller, Cortney R. ^{[1
]}

Wilson, Mahlon S. ^{[1
]}

Mukundan, Rangachary ^{[1
]}

Brosha, Eric L. ^{[1
]}

Garzon, Fernando H. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Sensors & Electrochem Devices Grp, Los Alamos, NM 87545 USA

来源：

ECS ELECTROCHEMISTRY LETTERS | 2013年 / 2卷 / 09期

关键词：

PROTONIC CONDUCTORS;

D O I：

10.1149/2.002309eel

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In-doped tin pyrophosphate materials were synthesized with varying metal to phosphate ratios to assess the influence of an excess amorphous polyphosphate phase on conductivity. Total conductivity at 250 degrees C increased with phosphorus to metal (P:M) ratio, with the 2.81 P:M ratio material exhibiting maximum conductivity of 10(-2) and 10(-1) Scm(-1) in dry and humidified N-2. XRD measurements revealed no systematic change in lattice parameter with increasing P:M. These results combined with supporting spectroscopy, suggest that a grain-boundary polyphosphate phase is required to achieve high conductivity in the low-intermediate temperature range. The materials were relatively stable and provided steady conductivities at 250 degrees C. (c) 2013 The Electrochemical Society.

引用

页码：F61 / F63

页数：3

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