Crystal chemistry and electrical properties of Na1+xScNb(PO4)(3) phases

被引：11

作者：

Znaidi, L ^{[1
]}

Launay, S ^{[1
]}

Quarton, M ^{[1
]}

机构：

[1] UNIV PARIS 06,LAB CRISTALLOCHIM SOLIDE,CNRS URA 1388,F-75252 PARIS 05,FRANCE

来源：

SOLID STATE IONICS | 1997年 / 93卷 / 3-4期

关键词：

nasicon; phosphate; mixed valence; electrochemical intercalation;

D O I：

10.1016/S0167-2738(96)00558-9

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：

Two Nasicon-type phases Na1+xScNb(PO4)(3) have been obtained by solid state reaction: rhombohedral <(R(3)over bar c)> for 0 less than or equal to x less than or equal to 1 and monoclinic (C2/c) for 1 < x less than or equal to 2. In spite of the presence of mixed valence niobium (V/IV for 0 < x < 1 or IV/III for 1 < x < 2), ionic and electronic conductivity measurements have shown the pre-eminence of ionic charge carriers (Na+) with sigma(300 degrees C) approximate to 10(-3) S cm(-1). At room temperature, reversible electrochemical intercalation of sodium in the NaScNb(PO4)(3) compound has allowed to scan the range 0 less than or equal to x less than or equal to 2.

引用

页码：273 / 277

页数：5

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