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Publication
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| Title of Article |
การสังเคราะห์และสมบัติเทอร์มออิเล็กทริกสาร Ca3Co4O9 ที่เตรียมโดยวิธีซอลเจลโดยใช้ PVA |
| Date of Acceptance |
2 November 2011 |
| Journal |
| Title of Journal |
วารสารวิจัย มข. |
| Standard |
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| Institute of Journal |
ฝ่ายวิจัยและการถ่ายทอดเทคโนโลยี มหาวิทยาลัยขอนแก่น |
| ISBN/ISSN |
08593957 |
| Volume |
16 |
| Issue |
1 |
| Month |
มกราคม |
| Year of Publication |
2011 |
| Page |
11-19 |
| Abstract |
Thermoelectric Ca3Co4O9 powder was synthesized by a sol-gel method using an aqueous solution containing
metal nitrates and polyvinyl alcohol (PVA) as starting materials. The physical properties of the samples were
characterized by thermogravimetric/ differential thermal analysis (TG/DTA), x-ray diffraction (XRD), energy
dispersive x-ray analysis (EDX) and scanning electron microscopy (SEM). The single phase of Ca3Co4O9 compound
was obtained at the calcined temperature of 800 °C for 4 h. The polycrystalline bulk samples were compacted by
a uniaxial pressure of 440 MPa and then sintered at 890 °C for 4 h. The thermoelectric properties of the sintered
samples were investigated from room temperature to 600 °C. At 600°C the electrical resistivity, the Seebeck coefficient and the thermal conductivity of the sample were 1.44x10-4 Ωm, 172 μVK-1 and Wm-1K-1 respectively,
which resulted in the highest ZT of 0.12. |
| Keyword |
Thermoelectric, Ca3Co4O9, Sol-gel |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
ชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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