Enhancement of Ca 3 Co 4 O 9 thermoelectric properties by Cr for Co substitution
Source abstract
Abstract
Ca3Co4-xCrxO9 polycristalline thermoelectric ceramics with small amounts of Cr have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Cr has been incorporated into the Ca3Co4O 9 structure and no Cr-containing secondary phases have been produced for Cr contents≤0.05. Apparent density measurements have shown that all samples are very similar, with densities around 75% of the theoretical one. Electrical resistivity decreases and Seebeck coefficient slightly raises when Cr content increases until 0.05 Cr addition. The improvement in both parameters leads to higher power factor values than the usually obtained by conventional solid state routes. © 2013 Elsevier Ltd and Techna Group S.r.l.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal Expansion and Ionic Conductivity · Thermal properties of materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Rowe · 2006
2. Thermoelectric materials: new approaches to an old problem10.1063/1.881752 ↗
3. Development of a solar receiver for a high-efficicency thermionic/thermoelectric conversion system10.1016/S0038-092X(96)00084-9 ↗
4. C.M. Kim, Y.J. Hwang, Y.H. Ryu, Air conditioner for individual cooling/heating, US Patent US6393842, May 2002.
5. Large thermoelectric power in NaCo2O4 single crystals10.1103/PhysRevB.56.R12685 ↗
6. An oxide single crystal with high thermoelectric performance in air10.1143/JJAP.39.L1127 ↗
7. New solution method to produce high performance thermoelectric ceramics: A case study of Bi–Sr–Co–O10.1016/j.matlet.2010.08.041 ↗
8. Solution-based synthesis routes to thermoelectric Bi2Ca2Co1.7Ox10.1016/j.jeurceramsoc.2011.03.008 ↗
9. Thermoelectric power in misfit cobaltites ceramics: Optimization by chemical substitutions10.3989/cyv.2006.v45.i3.290 ↗
10. Magnetoresistance and magnetothermopower properties of Bi/Ca/Co/O and Bi(Pb)/Ca/Co/O misfit layer cobaltites
11. Fabrication of textured thermoelectric layered cobaltites with various rock salt-type layers by using β-Co(OH)2 platelets as reactive templates10.1039/B309804D ↗
12. Thermoelectric properties of Gd, Y Ca3Co4O9+δ10.1016/j.cap.2008.03.010 ↗
13. Low temperature electrical and thermal transport properties of the Ca3−xSbxCo4O9 system
14. Improved thermoelectric properties in directionally grown Bi2Sr2Co1.8Oy ceramics by Pb for Bi substitution10.1016/j.materresbull.2011.08.011 ↗
15. Enhancement of the thermoelectric properties of directionally grown Bi–Ca–Co–O through Pb for Bi substitution10.1016/j.jeurceramsoc.2010.01.037 ↗
16. Effect of Ag addition on the mechanical and thermoelectric performances of annealed Bi2Sr2Co1.8Ox textured ceramics10.1016/j.jeurceramsoc.2012.05.035 ↗
17. Relationship among synthesis, microstructure and properties in sinter-forged Bi-2212 ceramics10.1016/S0921-4534(99)00308-1 ↗
18. Granular and lamellar thermoelectric oxides consolidated by spark plasma sintering10.1007/s11664-011-1550-z ↗
19. Microstructure and transport properties of YBCO zone melted samples processed in a microwave cavity and infra-red furnace10.1016/S0921-4534(99)00202-6 ↗
20. Fabrication and properties of textured Bi-based cobaltite thermoelectric rods by zone melting10.1016/j.jeurceramsoc.2007.02.020 ↗
21. Texture development by templated grain growth in liquid-phase-sintered alpha-alumina10.1111/j.1151-2916.1997.tb02961.x ↗
22. Bi2Ca2Co1.7Ox thermoelectric ceramics textured by laser floating zone method10.3989/cyv.2008.v47.i4.179 ↗
23. Improvement of Bi2Sr2Co1.8Ox thermoelectric properties by laser floating zone texturing10.1016/j.ssi.2009.02.004 ↗
24. Growth rate effect on microstructure and thermoelectric properties of melt grown Bi2Ba2Co2Ox textured ceramics10.1179/1743676112Y.0000000039 ↗
25. Enhancement of the high-temperature thermoelectric performance of Bi2Ba2Co2Ox ceramics10.1016/j.scriptamat.2012.09.014 ↗
26. Improvement of thermoelectric properties of Ca3Co4O9 using soft chemistry synthetic methods10.1016/j.jeurceramsoc.2012.02.012 ↗
27. Synthesis of Ca3Co4O9 and CuAlO2 ceramics of the thermoelectric application using a reaction-sintering process
28. Phase equilibria in the system CaO–cobalt oxide in air10.1016/0022-1902(70)80631-5 ↗
29. Thermoelectric properties of transition metals-doped Ca3Co3.8M0.2O9+δ (M=Co, Cr, Fe, Ni, Cu and Zn)
30. Ca3Co4O9 ceramics consolidated by SPS process: Optimisation of mechanical and thermoelectric properties10.1016/j.materresbull.2010.05.006 ↗
31. Enhanced high temperature thermoelectric characteristics of transition metals doped Ca3Co4O9+δ by cold high-pressure fabrication10.1063/1.3291125 ↗