Effect of Ca substitution by Fe on the thermoelectric properties of Ca3Co4O9 ceramics
(Ca 1-x Fe x ) 3 Co 4 O 9 polycrystalline samples (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.1 and 0.2) have been prepared by solid state reaction and sintered by spark plasma sintering. Their thermoelectric properties have been studied between 323 and 1000 K. The substitution limit is low (< 3%). F...
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| Veröffentlicht in: | Journal of electroceramics 2018-04, Vol.40 (2), p.107-114 |
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| creator | Delorme, F. Diaz-Chao, P. Giovannelli, F. |
| description | (Ca
1-x
Fe
x
)
3
Co
4
O
9
polycrystalline samples (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.1 and 0.2) have been prepared by solid state reaction and sintered by spark plasma sintering. Their thermoelectric properties have been studied between 323 and 1000 K. The substitution limit is low (< 3%). For higher iron contents, formation of Co
3
O
4
, Ca
2
FeCoO
5
and a calcium ferrite compound occurs. Concerning electrical conductivity and power factor, an optimum value exists for x = 0.03 substitution. This optimum power factor is circa 10% higher than the one of the unsubstituted sample. The optimum thermal diffusivity is measured for the sample with x = 0.02 and is circa 9% lower than the one of the unsubstituted sample. Therefore, the dimensionless figure of merit ZT is finally increased by 14% for the (Ca
0.98
Fe
0.02
)
3
Co
4
O
9
and (Ca
0.97
Fe
0.03
)
3
Co
4
O
9
compositions. |
| doi_str_mv | 10.1007/s10832-018-0109-2 |
| format | Article |
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1-x
Fe
x
)
3
Co
4
O
9
polycrystalline samples (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.1 and 0.2) have been prepared by solid state reaction and sintered by spark plasma sintering. Their thermoelectric properties have been studied between 323 and 1000 K. The substitution limit is low (< 3%). For higher iron contents, formation of Co
3
O
4
, Ca
2
FeCoO
5
and a calcium ferrite compound occurs. Concerning electrical conductivity and power factor, an optimum value exists for x = 0.03 substitution. This optimum power factor is circa 10% higher than the one of the unsubstituted sample. The optimum thermal diffusivity is measured for the sample with x = 0.02 and is circa 9% lower than the one of the unsubstituted sample. Therefore, the dimensionless figure of merit ZT is finally increased by 14% for the (Ca
0.98
Fe
0.02
)
3
Co
4
O
9
and (Ca
0.97
Fe
0.03
)
3
Co
4
O
9
compositions.</description><identifier>ISSN: 1385-3449</identifier><identifier>EISSN: 1573-8663</identifier><identifier>DOI: 10.1007/s10832-018-0109-2</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Calcium compounds ; Ceramics ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Cobalt oxides ; Composites ; Crystallography and Scattering Methods ; Electrical resistivity ; Electrochemistry ; Engineering Sciences ; Ferrites ; Figure of merit ; Glass ; Iron ; Materials ; Materials Science ; Natural Materials ; Optical and Electronic Materials ; Plasma sintering ; Power factor ; Spark plasma sintering ; Substitution reactions ; Thermal diffusivity</subject><ispartof>Journal of electroceramics, 2018-04, Vol.40 (2), p.107-114</ispartof><rights>Springer Science+Business Media, LLC, part of Springer Nature 2018</rights><rights>Journal of Electroceramics is a copyright of Springer, (2018). All Rights Reserved.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c350t-d6b0d0fc944be5aed86e17a88fd9a72cffd42918ab33a3596d825044d1bfe1eb3</citedby><cites>FETCH-LOGICAL-c350t-d6b0d0fc944be5aed86e17a88fd9a72cffd42918ab33a3596d825044d1bfe1eb3</cites><orcidid>0000-0003-1248-077X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10832-018-0109-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10832-018-0109-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,780,784,885,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://univ-tours.hal.science/hal-01741366$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Delorme, F.</creatorcontrib><creatorcontrib>Diaz-Chao, P.</creatorcontrib><creatorcontrib>Giovannelli, F.</creatorcontrib><title>Effect of Ca substitution by Fe on the thermoelectric properties of Ca3Co4O9 ceramics</title><title>Journal of electroceramics</title><addtitle>J Electroceram</addtitle><description>(Ca
1-x
Fe
x
)
3
Co
4
O
9
polycrystalline samples (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.1 and 0.2) have been prepared by solid state reaction and sintered by spark plasma sintering. Their thermoelectric properties have been studied between 323 and 1000 K. The substitution limit is low (< 3%). For higher iron contents, formation of Co
3
O
4
, Ca
2
FeCoO
5
and a calcium ferrite compound occurs. Concerning electrical conductivity and power factor, an optimum value exists for x = 0.03 substitution. This optimum power factor is circa 10% higher than the one of the unsubstituted sample. The optimum thermal diffusivity is measured for the sample with x = 0.02 and is circa 9% lower than the one of the unsubstituted sample. Therefore, the dimensionless figure of merit ZT is finally increased by 14% for the (Ca
0.98
Fe
0.02
)
3
Co
4
O
9
and (Ca
0.97
Fe
0.03
)
3
Co
4
O
9
compositions.</description><subject>Calcium compounds</subject><subject>Ceramics</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Cobalt oxides</subject><subject>Composites</subject><subject>Crystallography and Scattering Methods</subject><subject>Electrical resistivity</subject><subject>Electrochemistry</subject><subject>Engineering Sciences</subject><subject>Ferrites</subject><subject>Figure of merit</subject><subject>Glass</subject><subject>Iron</subject><subject>Materials</subject><subject>Materials Science</subject><subject>Natural Materials</subject><subject>Optical and Electronic Materials</subject><subject>Plasma sintering</subject><subject>Power factor</subject><subject>Spark plasma sintering</subject><subject>Substitution reactions</subject><subject>Thermal diffusivity</subject><issn>1385-3449</issn><issn>1573-8663</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kE9LAzEQxYMoWP98AG8BTx5WM5tsNjmW0lqh0Is9h2w2sVvapiZZod_eLCvixcMww_B7j8dD6AHIMxBSv0QggpYFAZGHyKK8QBOoaloIzullvqmoCsqYvEY3Me4IIVIwmKDN3DlrEvYOzzSOfRNTl_rU-SNuznhhcT7S1g4TDt7uMxs6g0_Bn2xInY2jks48W0tsbNCHzsQ7dOX0Ptr7n32LNov5-2xZrNavb7PpqjC0IqloeUNa4oxkrLGVtq3gFmothGulrkvjXMtKCUI3lGpaSd6KsiKMtdA4C7aht-hp9N3qvTqF7qDDWXndqeV0pYYfgZoB5fwLMvs4sjn7Z29jUjvfh2OOp0BKCrwiXGYKRsoEH2Ow7tcWiBqaVmPT2VmooWlVZk05amJmjx82_HH-V_QNC7Z_kQ</recordid><startdate>20180401</startdate><enddate>20180401</enddate><creator>Delorme, F.</creator><creator>Diaz-Chao, P.</creator><creator>Giovannelli, F.</creator><general>Springer US</general><general>Springer Nature B.V</general><general>Springer Verlag</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SP</scope><scope>7SR</scope><scope>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0003-1248-077X</orcidid></search><sort><creationdate>20180401</creationdate><title>Effect of Ca substitution by Fe on the thermoelectric properties of Ca3Co4O9 ceramics</title><author>Delorme, F. ; Diaz-Chao, P. ; Giovannelli, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c350t-d6b0d0fc944be5aed86e17a88fd9a72cffd42918ab33a3596d825044d1bfe1eb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Calcium compounds</topic><topic>Ceramics</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Cobalt oxides</topic><topic>Composites</topic><topic>Crystallography and Scattering Methods</topic><topic>Electrical resistivity</topic><topic>Electrochemistry</topic><topic>Engineering Sciences</topic><topic>Ferrites</topic><topic>Figure of merit</topic><topic>Glass</topic><topic>Iron</topic><topic>Materials</topic><topic>Materials Science</topic><topic>Natural Materials</topic><topic>Optical and Electronic Materials</topic><topic>Plasma sintering</topic><topic>Power factor</topic><topic>Spark plasma sintering</topic><topic>Substitution reactions</topic><topic>Thermal diffusivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Delorme, F.</creatorcontrib><creatorcontrib>Diaz-Chao, P.</creatorcontrib><creatorcontrib>Giovannelli, F.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Journal of electroceramics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Delorme, F.</au><au>Diaz-Chao, P.</au><au>Giovannelli, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Ca substitution by Fe on the thermoelectric properties of Ca3Co4O9 ceramics</atitle><jtitle>Journal of electroceramics</jtitle><stitle>J Electroceram</stitle><date>2018-04-01</date><risdate>2018</risdate><volume>40</volume><issue>2</issue><spage>107</spage><epage>114</epage><pages>107-114</pages><issn>1385-3449</issn><eissn>1573-8663</eissn><abstract>(Ca
1-x
Fe
x
)
3
Co
4
O
9
polycrystalline samples (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.1 and 0.2) have been prepared by solid state reaction and sintered by spark plasma sintering. Their thermoelectric properties have been studied between 323 and 1000 K. The substitution limit is low (< 3%). For higher iron contents, formation of Co
3
O
4
, Ca
2
FeCoO
5
and a calcium ferrite compound occurs. Concerning electrical conductivity and power factor, an optimum value exists for x = 0.03 substitution. This optimum power factor is circa 10% higher than the one of the unsubstituted sample. The optimum thermal diffusivity is measured for the sample with x = 0.02 and is circa 9% lower than the one of the unsubstituted sample. Therefore, the dimensionless figure of merit ZT is finally increased by 14% for the (Ca
0.98
Fe
0.02
)
3
Co
4
O
9
and (Ca
0.97
Fe
0.03
)
3
Co
4
O
9
compositions.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10832-018-0109-2</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0003-1248-077X</orcidid></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Calcium compounds Ceramics Characterization and Evaluation of Materials Chemistry and Materials Science Cobalt oxides Composites Crystallography and Scattering Methods Electrical resistivity Electrochemistry Engineering Sciences Ferrites Figure of merit Glass Iron Materials Materials Science Natural Materials Optical and Electronic Materials Plasma sintering Power factor Spark plasma sintering Substitution reactions Thermal diffusivity |
| title | Effect of Ca substitution by Fe on the thermoelectric properties of Ca3Co4O9 ceramics |
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