Control of mixed protonic and electronic conductivity by mixing rare-earth ortho-borates
In order to develop mixed protonic and electronic conductors, we proposed a novel concept for material design that enables to control partial conductivities by fabricating solid solutions of protonic and electronic conductors. In this work, Sr-doped LaBO 3 and Sr-doped CeBO 3 were chosen as model co...
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Veröffentlicht in: | Solid state ionics 2011-06, Vol.192 (1), p.275-278 |
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creator | Takahashi, Hayato Unemoto, Atsushi Amezawa, Koji Kawada, Tatsuya |
description | In order to develop mixed protonic and electronic conductors, we proposed a novel concept for material design that enables to control partial conductivities by fabricating solid solutions of protonic and electronic conductors. In this work, Sr-doped LaBO
3 and Sr-doped CeBO
3 were chosen as model compounds conducting protons and electron holes, respectively. Solid solutions of the above borates, Sr-doped La
1
−
x
Ce
x
BO
3, were prepared, and their electrical conductivities were investigated in 8.5
×
10
2–4.2
×
10
3
Pa of
p(H
2O) and 1.0
×
10–1.0
×
10
5
Pa of
p(H
2) at 1073
K. From the experimental results of the gas partial pressure dependences of the conductivities, major charge carrier species were identified as a function of
x. It was found that proton was the major charge carrier when
x
<
0.2 while the contribution of the electron hole conduction became remarkable as
x increased above 0.2. The contribution of the electron hole conduction can be interpreted by the percolation model. |
doi_str_mv | 10.1016/j.ssi.2010.07.023 |
format | Article |
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3 and Sr-doped CeBO
3 were chosen as model compounds conducting protons and electron holes, respectively. Solid solutions of the above borates, Sr-doped La
1
−
x
Ce
x
BO
3, were prepared, and their electrical conductivities were investigated in 8.5
×
10
2–4.2
×
10
3
Pa of
p(H
2O) and 1.0
×
10–1.0
×
10
5
Pa of
p(H
2) at 1073
K. From the experimental results of the gas partial pressure dependences of the conductivities, major charge carrier species were identified as a function of
x. It was found that proton was the major charge carrier when
x
<
0.2 while the contribution of the electron hole conduction became remarkable as
x increased above 0.2. The contribution of the electron hole conduction can be interpreted by the percolation model.</description><identifier>ISSN: 0167-2738</identifier><identifier>EISSN: 1872-7689</identifier><identifier>DOI: 10.1016/j.ssi.2010.07.023</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Charge carriers ; Conductivity ; Conductivity control ; Conductors ; Electron hole conduction ; Electronics ; Mixed conductor ; Proton conduction ; Rare earth metals ; Rare-earth ortho-borates ; Resistivity ; Solid solutions ; Strontium</subject><ispartof>Solid state ionics, 2011-06, Vol.192 (1), p.275-278</ispartof><rights>2010 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c329t-4bcb6adfd5ce249713d37f8012281fe3e49a9a062dc13d436203dd4a5047acf73</citedby><cites>FETCH-LOGICAL-c329t-4bcb6adfd5ce249713d37f8012281fe3e49a9a062dc13d436203dd4a5047acf73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0167273810004212$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids></links><search><creatorcontrib>Takahashi, Hayato</creatorcontrib><creatorcontrib>Unemoto, Atsushi</creatorcontrib><creatorcontrib>Amezawa, Koji</creatorcontrib><creatorcontrib>Kawada, Tatsuya</creatorcontrib><title>Control of mixed protonic and electronic conductivity by mixing rare-earth ortho-borates</title><title>Solid state ionics</title><description>In order to develop mixed protonic and electronic conductors, we proposed a novel concept for material design that enables to control partial conductivities by fabricating solid solutions of protonic and electronic conductors. In this work, Sr-doped LaBO
3 and Sr-doped CeBO
3 were chosen as model compounds conducting protons and electron holes, respectively. Solid solutions of the above borates, Sr-doped La
1
−
x
Ce
x
BO
3, were prepared, and their electrical conductivities were investigated in 8.5
×
10
2–4.2
×
10
3
Pa of
p(H
2O) and 1.0
×
10–1.0
×
10
5
Pa of
p(H
2) at 1073
K. From the experimental results of the gas partial pressure dependences of the conductivities, major charge carrier species were identified as a function of
x. It was found that proton was the major charge carrier when
x
<
0.2 while the contribution of the electron hole conduction became remarkable as
x increased above 0.2. The contribution of the electron hole conduction can be interpreted by the percolation model.</description><subject>Charge carriers</subject><subject>Conductivity</subject><subject>Conductivity control</subject><subject>Conductors</subject><subject>Electron hole conduction</subject><subject>Electronics</subject><subject>Mixed conductor</subject><subject>Proton conduction</subject><subject>Rare earth metals</subject><subject>Rare-earth ortho-borates</subject><subject>Resistivity</subject><subject>Solid solutions</subject><subject>Strontium</subject><issn>0167-2738</issn><issn>1872-7689</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWKs_wFtunnbNxzbJ4kmKX1DwouAtZJNZTdluapIW--_NUs9eZhje9x1mHoSuKakpoeJ2Xafka0bKTGRNGD9BM6okq6RQ7SmaFY-smOTqHF2ktCaECK7EDH0sw5hjGHDo8cb_gMPbGHIYvcVmdBgGsEWeRhtGt7PZ730-4O4wuf34iaOJUIGJ-QuHUkLVhWgypEt01pshwdVfn6P3x4e35XO1en16Wd6vKstZm6ums50wrncLC6xpJeWOy14RypiiPXBoWtMaIpizRWq4YIQ715gFaaSxveRzdHPcW-7-3kHKeuOThWEwI4Rd0qoVVImFUMVJj04bQ0oRer2NfmPiQVOiJ4h6rQtEPUHUROoCsWTujhkoL-w9RJ2sh9GC87GQ0S74f9K_4Fh7wA</recordid><startdate>20110616</startdate><enddate>20110616</enddate><creator>Takahashi, Hayato</creator><creator>Unemoto, Atsushi</creator><creator>Amezawa, Koji</creator><creator>Kawada, Tatsuya</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20110616</creationdate><title>Control of mixed protonic and electronic conductivity by mixing rare-earth ortho-borates</title><author>Takahashi, Hayato ; Unemoto, Atsushi ; Amezawa, Koji ; Kawada, Tatsuya</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c329t-4bcb6adfd5ce249713d37f8012281fe3e49a9a062dc13d436203dd4a5047acf73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Charge carriers</topic><topic>Conductivity</topic><topic>Conductivity control</topic><topic>Conductors</topic><topic>Electron hole conduction</topic><topic>Electronics</topic><topic>Mixed conductor</topic><topic>Proton conduction</topic><topic>Rare earth metals</topic><topic>Rare-earth ortho-borates</topic><topic>Resistivity</topic><topic>Solid solutions</topic><topic>Strontium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Takahashi, Hayato</creatorcontrib><creatorcontrib>Unemoto, Atsushi</creatorcontrib><creatorcontrib>Amezawa, Koji</creatorcontrib><creatorcontrib>Kawada, Tatsuya</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Solid state ionics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Takahashi, Hayato</au><au>Unemoto, Atsushi</au><au>Amezawa, Koji</au><au>Kawada, Tatsuya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Control of mixed protonic and electronic conductivity by mixing rare-earth ortho-borates</atitle><jtitle>Solid state ionics</jtitle><date>2011-06-16</date><risdate>2011</risdate><volume>192</volume><issue>1</issue><spage>275</spage><epage>278</epage><pages>275-278</pages><issn>0167-2738</issn><eissn>1872-7689</eissn><abstract>In order to develop mixed protonic and electronic conductors, we proposed a novel concept for material design that enables to control partial conductivities by fabricating solid solutions of protonic and electronic conductors. In this work, Sr-doped LaBO
3 and Sr-doped CeBO
3 were chosen as model compounds conducting protons and electron holes, respectively. Solid solutions of the above borates, Sr-doped La
1
−
x
Ce
x
BO
3, were prepared, and their electrical conductivities were investigated in 8.5
×
10
2–4.2
×
10
3
Pa of
p(H
2O) and 1.0
×
10–1.0
×
10
5
Pa of
p(H
2) at 1073
K. From the experimental results of the gas partial pressure dependences of the conductivities, major charge carrier species were identified as a function of
x. It was found that proton was the major charge carrier when
x
<
0.2 while the contribution of the electron hole conduction became remarkable as
x increased above 0.2. The contribution of the electron hole conduction can be interpreted by the percolation model.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.ssi.2010.07.023</doi><tpages>4</tpages></addata></record> |
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issn | 0167-2738 1872-7689 |
language | eng |
recordid | cdi_proquest_miscellaneous_896186568 |
source | Elsevier ScienceDirect Journals |
subjects | Charge carriers Conductivity Conductivity control Conductors Electron hole conduction Electronics Mixed conductor Proton conduction Rare earth metals Rare-earth ortho-borates Resistivity Solid solutions Strontium |
title | Control of mixed protonic and electronic conductivity by mixing rare-earth ortho-borates |
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