Effect of grain size and porosity on phonon scattering enhancement of Ca3Co4O9

M Gunes, M Ozenbas - Journal of Alloys and Compounds, 2015 - Elsevier
Abstract Ca 3 Co 4 O 9 (C-349) samples with average grain sizes ranging from 18 nm to 2
μm were synthesized using the citrate sol–gel method. PEG 400 was used to vary the …

Calcium cobaltite, a promising oxide for energy harvesting: effective strategies toward enhanced thermoelectric performance

J Yu, R Freer - Journal of Physics: Energy, 2022 - iopscience.iop.org
Thermoelectric (TE) materials are able to generate power from waste heat and thereby
provide an alternative source of sustainable energy. Calcium cobaltite is a promising p-type …

Improved High-Temperature Thermoelectric Properties of Dual-Doped Ca3Co4O9

U Hira, SS Ali, S Latif, N Pryds, F Sher - ACS omega, 2022 - ACS Publications
Layered structured Ca3Co4O9 has displayed great potential for thermoelectric (TE)
renewable energy applications, as it is nontoxic and contains abundantly available …

Significant enhancement of the thermoelectric performance in Ca3Co4O9 thermoelectric materials through combined strontium substitution and hot-pressing process

MA Torres, FM Costa, D Flahaut, K Touati… - Journal of the European …, 2019 - Elsevier
This work explores the possibilities for a further enhancement of the thermoelectric
properties of Ca 3 Co 4 O 9 by Sr-doping combined with hot-pressing. Modified hot-pressing …

Enhanced thermoelectric performance of Ca 3 Co 4 O 9 ceramics through grain orientation and interface modulation

Z Shi, T Su, P Zhang, Z Lou, M Qin, T Gao… - Journal of Materials …, 2020 - pubs.rsc.org
The commercial application of Ca3Co4O9 ceramics at high temperatures is greatly restricted
due to poor thermoelectric properties. One of the approaches to enhance the performance of …

Enhancement of mechanical and thermoelectric properties of Ca3Co4O9 by Ag addition

F Kahraman, MA Madre, S Rasekh, C Salvador… - Journal of the European …, 2015 - Elsevier
Abstract Ca 3 Co 4 O 9+ x wt.% Ag (x= 0, 1, 3, 5, and 10) polycrystalline thermoelectric
ceramics have been prepared by a sol–gel route via nitrates followed by high temperature …

Thermoelectric properties of La3+ and Ce3+ co-doped CaMnO3 prepared by tape casting

CM Kim, DH Kim, HY Hong, K Park - Journal of the European Ceramic …, 2020 - Elsevier
The structural and thermoelectric transport properties of Ca 0.9 La 0.1–x Ce x MnO 3–δ (x= 0–
0.1) prepared through tape casting process were investigated. The thermoelectric transport …

Improved High Temperature Thermoelectric Properties in Misfit Ca3Co4O9 by Thermal Annealing

A Chatterjee, A El Sachat, A Banik, K Biswas… - Energies, 2023 - mdpi.com
Ca3Co4O9, a p-type thermoelectric material based on transition-metal oxides, has garnered
significant interest due to its potential in thermoelectric applications. Its unique misfit-layered …

Two–step processing of thermoelectric (Ca0. 9Ag0. 1) 3Co4O9/nano–sized Ag composites with high ZT

Z Shi, F Gao, J Xu, J Zhu, Y Zhang, T Gao, M Qin… - Journal of the European …, 2019 - Elsevier
A two–step processing method, spark plasma sintering (SPS) combined with a heat–
treatment, was used to fabricate (Ca 0.9 Ag 0.1) 3 Co 4 O 9/nano–sized Ag composites …

Enhanced thermoelectric properties of Ca3Co4O9 by adding nano MoSi2

Y Li, P Wu, S Zhang, Y Pei, J Yang, S Chen… - Ceramics International, 2022 - Elsevier
Adding nanoparticles is a method to regulate the performance of thermoelectric materials.
Ca 3 Co 4 O 9/x MoSi 2 (x= 0, 0.05, 0.10, 0.13, and 0.16) was synthesized by a wet chemical …