Preparation and thermoelectric properties of NaxCoO2/Co3O4 layered nano-composite

被引：7
作者：
Zhu, PX
Takeuchi, T
Ohta, H
Seo, WS
Koumoto, K [1 ]
机构：
[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
[2] Japan Sci & Technol Agcy, CREST, Kawaguchi 3320012, Japan
[3] Korea Inst Ceram Engn & Technol, Seoul 153801, South Korea
来源：
MATERIALS TRANSACTIONS | 2005年 / 46卷 / 07期
关键词：
sodium cobaltite; thermoelectric properties; exfoliation; integration; nano sheet;
D O I：
10.2320/matertrans.46.1453
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NaxCoO2/Co3O4 layered nano-composite was prepared through the exfoliation, stacking, and sintering processes. Although almost no electrical conduction was observed at low temperatures, a significant increase in conductivity was observed above 750K, and it reached 1.2 x 10(2) Scm(-1) at 1200 K, which is comparable to that of Na0.7CoO2. Seebeck coefficient also largely increased above 750 K. This observation might be associated with the electrical behaviors Of Co3O4 at high temperature.
引用
收藏
页码：1453 / 1455
页数：3
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