Enhanced high temperature thermoelectric characteristics of transition metals doped Ca3Co4O9+delta by cold high-pressure fabrication
文献类型：期刊论文
| 作者 | Wang, Yang2; Sui, Yu1,2; Wang, Xianjie2; Su, Wenhui2; Liu, Xiaoyang3 |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2010-02-01 |
| 卷号 | 107期号:3页码:9 |
| 关键词 | Boltzmann equation calcium compounds compaction copper density doping high-pressure techniques iron manganese texture thermoelectric power |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.3291125 |
| 通讯作者 | Sui, Yu(suiyu@hit.edu.cn) |
| 英文摘要 | A series of Fe, Mn, and Cu doped Ca3Co4O9+delta samples, Ca-3(Co,M)(4)O9+delta (M=Fe, Mn, and Cu), were fabricated by cold high-pressure compacting technique. Their thermoelectric properties were investigated from room temperature up to 1000 K. The cold high-pressure compacting method is advantageous to increasing density and texture, in favor of the improvement of thermoelectric performance. The electrical transport measurements indicate that Fe/Mn substitutes for Co mainly in [CoO2] layers whereas the substitution of Cu for Co takes place in [Ca2CoO3] layers. The thermoelectric properties as well as electronic correlations depend not only on the substitution ion but also the Co site that is replaced. Thermopower can be well calculated by the carrier effective mass according to Boltzmann transport model, indicating that the electronic correlation plays a crucial role in the unusual thermoelectric characteristics of this system. From the changes in thermopower, resistivity, and thermal conductivity, thermoelectric performance of Ca3Co4O9+delta is efficiently improved by these transition metals doping. Fe doped samples possess the highest ZT values. Combining cold high-pressure technique, ZT of Ca3Co3.9Fe0.1O9+delta can reach similar to 0.4 at 1000 K, which is quite large among ceramic oxides, suggesting that Fe doped Ca3Co4O9+delta could be a promising candidate for thermoelectric applications at elevated temperatures. |
| 资助项目 | National Natural Science Foundation of China[50672019] ; National Natural Science Foundation of China[10804024] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000274517300052 |
| 出版者 | AMER INST PHYSICS |
| 资助机构 | National Natural Science Foundation of China ; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry |
| 源URL | [http://ir.imr.ac.cn/handle/321006/101398]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Sui, Yu |
| 作者单位 | 1.Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China 2.Harbin Inst Technol, CCMST, Dept Phys, Harbin 150001, Peoples R China 3.Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yang,Sui, Yu,Wang, Xianjie,et al. Enhanced high temperature thermoelectric characteristics of transition metals doped Ca3Co4O9+delta by cold high-pressure fabrication[J]. JOURNAL OF APPLIED PHYSICS,2010,107(3):9. |
| APA | Wang, Yang,Sui, Yu,Wang, Xianjie,Su, Wenhui,&Liu, Xiaoyang.(2010).Enhanced high temperature thermoelectric characteristics of transition metals doped Ca3Co4O9+delta by cold high-pressure fabrication.JOURNAL OF APPLIED PHYSICS,107(3),9. |
| MLA | Wang, Yang,et al."Enhanced high temperature thermoelectric characteristics of transition metals doped Ca3Co4O9+delta by cold high-pressure fabrication".JOURNAL OF APPLIED PHYSICS 107.3(2010):9. |
入库方式： OAI收割
来源：金属研究所
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