CobaltMaghrebV1, PascalFrancis, Corpus, bibRecord, 000326

Structure and Na+ ion conductivity inside double phosphates of Na8-2xM2+4+x(P2O7)4 formulation (M=Mn, Co and Ni)

Identifieur interne : 000326 ( PascalFrancis/Corpus ); précédent : 000325; suivant : 000327

Structure and Na+ ion conductivity inside double phosphates of Na8-2xM2+4+x(P2O7)4 formulation (M=Mn, Co and Ni)

Auteurs : N. Dridi ; A. Boukhari ; J. M. Reau ; E. M. Holt

Source :

Solid state ionics [ 0167-2738 ] ; 1998.

RBID : Pascal:98-0169809

Descripteurs français

Pascal (Inist)
- Conductivité ionique, Mobilité ion, Effet tunnel, Impédance électrique, Structure cristalline, Site cristallographique, Dépendance fréquence, Densité porteur charge, Conductivité saut, Sodium phosphate, Manganèse phosphate, Cobalt phosphate, Nickel phosphate, Composé quaternaire, Composition chimique, Etude expérimentale, Ca Na O P, Na8-2xNi4+x(P2O7)4, Na Ni O P, 6630H, Impédance complexe, Na8-2xMn4+x(P2O7)4, Mn Na O P, Na8-2xCo4+x(P2O7)4.

English descriptors

KwdEn :
- Carrier density, Chemical composition, Cobalt phosphates, Crystal structure, Crystallographic site, Electric impedance, Experimental study, Frequency dependence, Hopping conductivity, Ion mobility, Ionic conductivity, Manganese phosphates, Nickel phosphates, Quaternary compounds, Sodium phosphates, Tunnel effect.

Abstract

Investigation of electrical properties inside double phosphates Na_8-2xM²⁺_4+x(P₂O₇)₄ containing simultaneously the Na⁺ ion and a divalent cation (M²⁺=Mn²⁺, Co²⁺, Ni²⁺) is undertaken by impedance spectroscopy. Ionic conductivity in these materials is due to Na⁺ ion mobility in tunnels along the c-axis centred on the (0,0,0) position. The best performance are obtained for the Co-phase. Correlations between structure and electrical properties are established.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

A01	`01`	`1`		`@0 0167-2738`
A02	`01`			`@0 SSIOD3`
A03		`1`		`@0 Solid state ion.`
A05				`@2 107`
A06				`@2 1-2`
A08	`01`	`1`	`ENG`	`@1 Structure and Na⁺ ion conductivity inside double phosphates of Na_8-2xM²⁺_4+x(P₂O₇)₄ formulation (M=Mn, Co and Ni)`
A11	`01`	`1`		`@1 DRIDI (N.)`
A11	`02`	`1`		`@1 BOUKHARI (A.)`
A11	`03`	`1`		`@1 REAU (J. M.)`
A11	`04`	`1`		`@1 HOLT (E. M.)`
A14	`01`			`@1 Laboratoire de Chimie du Solide Appliqué, Université Mohammed V, Av. Ibn Batouta, B.P. 1014 @2 Rabat @3 MAR @Z 1 aut. @Z 2 aut.`
A14	`02`			`@1 Institut de Chimie de la Matière Condensée de Bordeaux, 162 Av. Dr. A. Schweitzer @2 33608 Pessac @3 FRA @Z 3 aut.`
A14	`03`			`@1 Department of Chemistry, Oklahoma State University @2 Stillwater, OH 74078 @3 USA @Z 4 aut.`
A20				`@1 25-30`
A21				`@1 1998`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 18305 @5 354000079032640030`
A44				`@0 0000 @1 © 1998 INIST-CNRS. All rights reserved.`
A45				`@0 8 ref.`
A47	`01`	`1`		`@0 98-0169809`
A60				`@1 P`
A61				`@0 A`
A64		`1`		`@0 Solid state ionics`
A66	`01`			`@0 NLD`
C01	`01`		`ENG`	`@0 Investigation of electrical properties inside double phosphates Na_8-2xM²⁺_4+x(P₂O₇)₄ containing simultaneously the Na⁺ ion and a divalent cation (M²⁺=Mn²⁺, Co²⁺, Ni²⁺) is undertaken by impedance spectroscopy. Ionic conductivity in these materials is due to Na⁺ ion mobility in tunnels along the c-axis centred on the (0,0,0) position. The best performance are obtained for the Co-phase. Correlations between structure and electrical properties are established.`
C02	`01`	`3`		`@0 001B60F30H`
C03	`01`	`3`	`FRE`	`@0 Conductivité ionique @5 01`
C03	`01`	`3`	`ENG`	`@0 Ionic conductivity @5 01`
C03	`02`	`3`	`FRE`	`@0 Mobilité ion @5 02`
C03	`02`	`3`	`ENG`	`@0 Ion mobility @5 02`
C03	`03`	`3`	`FRE`	`@0 Effet tunnel @5 03`
C03	`03`	`3`	`ENG`	`@0 Tunnel effect @5 03`
C03	`04`	`3`	`FRE`	`@0 Impédance électrique @5 04`
C03	`04`	`3`	`ENG`	`@0 Electric impedance @5 04`
C03	`05`	`3`	`FRE`	`@0 Structure cristalline @5 05`
C03	`05`	`3`	`ENG`	`@0 Crystal structure @5 05`
C03	`06`	`X`	`FRE`	`@0 Site cristallographique @5 06`
C03	`06`	`X`	`ENG`	`@0 Crystallographic site @5 06`
C03	`06`	`X`	`SPA`	`@0 Sitio cristalográfico @5 06`
C03	`07`	`3`	`FRE`	`@0 Dépendance fréquence @5 07`
C03	`07`	`3`	`ENG`	`@0 Frequency dependence @5 07`
C03	`08`	`3`	`FRE`	`@0 Densité porteur charge @5 08`
C03	`08`	`3`	`ENG`	`@0 Carrier density @5 08`
C03	`09`	`X`	`FRE`	`@0 Conductivité saut @5 09`
C03	`09`	`X`	`ENG`	`@0 Hopping conductivity @5 09`
C03	`09`	`X`	`SPA`	`@0 Conductividad salto @5 09`
C03	`10`	`3`	`FRE`	`@0 Sodium phosphate @2 NK @5 10`
C03	`10`	`3`	`ENG`	`@0 Sodium phosphates @2 NK @5 10`
C03	`11`	`3`	`FRE`	`@0 Manganèse phosphate @2 NK @5 11`
C03	`11`	`3`	`ENG`	`@0 Manganese phosphates @2 NK @5 11`
C03	`12`	`3`	`FRE`	`@0 Cobalt phosphate @2 NK @5 12`
C03	`12`	`3`	`ENG`	`@0 Cobalt phosphates @2 NK @5 12`
C03	`13`	`3`	`FRE`	`@0 Nickel phosphate @2 NK @5 13`
C03	`13`	`3`	`ENG`	`@0 Nickel phosphates @2 NK @5 13`
C03	`14`	`3`	`FRE`	`@0 Composé quaternaire @5 14`
C03	`14`	`3`	`ENG`	`@0 Quaternary compounds @5 14`
C03	`15`	`3`	`FRE`	`@0 Composition chimique @5 15`
C03	`15`	`3`	`ENG`	`@0 Chemical composition @5 15`
C03	`16`	`3`	`FRE`	`@0 Etude expérimentale @5 17`
C03	`16`	`3`	`ENG`	`@0 Experimental study @5 17`
C03	`17`	`3`	`FRE`	`@0 Ca Na O P @4 INC @5 52`
C03	`18`	`3`	`FRE`	`@0 Na8-2xNi4+x(P2O7)4 @4 INC @5 53`
C03	`19`	`3`	`FRE`	`@0 Na Ni O P @4 INC @5 54`
C03	`20`	`3`	`FRE`	`@0 6630H @2 PAC @4 INC @5 56`
C03	`21`	`3`	`FRE`	`@0 Impédance complexe @4 INC @5 92`
C03	`22`	`3`	`FRE`	`@0 Na8-2xMn4+x(P2O7)4 @4 INC @5 93`
C03	`23`	`3`	`FRE`	`@0 Mn Na O P @4 INC @5 94`
C03	`24`	`3`	`FRE`	`@0 Na8-2xCo4+x(P2O7)4 @4 INC @5 95`
C07	`01`	`3`	`FRE`	`@0 Métal transition composé @5 16`
C07	`01`	`3`	`ENG`	`@0 Transition element compounds @5 16`
N21				`@1 110`

Format Inist (serveur)

NO :	PASCAL 98-0169809 INIST
ET :	Structure and Na⁺ ion conductivity inside double phosphates of Na_8-2xM²⁺_4+x(P₂O₇)₄ formulation (M=Mn, Co and Ni)
AU :	DRIDI (N.); BOUKHARI (A.); REAU (J. M.); HOLT (E. M.)
AF :	Laboratoire de Chimie du Solide Appliqué, Université Mohammed V, Av. Ibn Batouta, B.P. 1014/Rabat/Maroc (1 aut., 2 aut.); Institut de Chimie de la Matière Condensée de Bordeaux, 162 Av. Dr. A. Schweitzer/33608 Pessac/France (3 aut.); Department of Chemistry, Oklahoma State University/Stillwater, OH 74078/Etats-Unis (4 aut.)
DT :	Publication en série; Niveau analytique
SO :	Solid state ionics; ISSN 0167-2738; Coden SSIOD3; Pays-Bas; Da. 1998; Vol. 107; No. 1-2; Pp. 25-30; Bibl. 8 ref.
LA :	Anglais
EA :	Investigation of electrical properties inside double phosphates Na_8-2xM²⁺_4+x(P₂O₇)₄ containing simultaneously the Na⁺ ion and a divalent cation (M²⁺=Mn²⁺, Co²⁺, Ni²⁺) is undertaken by impedance spectroscopy. Ionic conductivity in these materials is due to Na⁺ ion mobility in tunnels along the c-axis centred on the (0,0,0) position. The best performance are obtained for the Co-phase. Correlations between structure and electrical properties are established.
CC :	001B60F30H
FD :	Conductivité ionique; Mobilité ion; Effet tunnel; Impédance électrique; Structure cristalline; Site cristallographique; Dépendance fréquence; Densité porteur charge; Conductivité saut; Sodium phosphate; Manganèse phosphate; Cobalt phosphate; Nickel phosphate; Composé quaternaire; Composition chimique; Etude expérimentale; Ca Na O P; Na8-2xNi4+x(P2O7)4; Na Ni O P; 6630H; Impédance complexe; Na8-2xMn4+x(P2O7)4; Mn Na O P; Na8-2xCo4+x(P2O7)4
FG :	Métal transition composé
ED :	Ionic conductivity; Ion mobility; Tunnel effect; Electric impedance; Crystal structure; Crystallographic site; Frequency dependence; Carrier density; Hopping conductivity; Sodium phosphates; Manganese phosphates; Cobalt phosphates; Nickel phosphates; Quaternary compounds; Chemical composition; Experimental study
EG :	Transition element compounds
SD :	Sitio cristalográfico; Conductividad salto
LO :	INIST-18305.354000079032640030
ID :	98-0169809

Links to Exploration step

Pascal:98-0169809

Le document en format XML

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 ion conductivity inside double phosphates of Na<sub>8-2x</sub>
M<sup>2+</sup>
<sub>4+x</sub>
(P<sub>2</sub>
O<sub>7</sub>
)<sub>4</sub>
 formulation (M=Mn, Co and Ni)</title>
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<author><name sortKey="Reau, J M" sort="Reau, J M" uniqKey="Reau J" first="J. M." last="Reau">J. M. Reau</name>
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 ion conductivity inside double phosphates of Na<sub>8-2x</sub>
M<sup>2+</sup>
<sub>4+x</sub>
(P<sub>2</sub>
O<sub>7</sub>
)<sub>4</sub>
 formulation (M=Mn, Co and Ni)</title>
<author><name sortKey="Dridi, N" sort="Dridi, N" uniqKey="Dridi N" first="N." last="Dridi">N. Dridi</name>
<affiliation><inist:fA14 i1="01"><s1>Laboratoire de Chimie du Solide Appliqué, Université Mohammed V, Av. Ibn Batouta, B.P. 1014</s1>
<s2>Rabat</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
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<author><name sortKey="Boukhari, A" sort="Boukhari, A" uniqKey="Boukhari A" first="A." last="Boukhari">A. Boukhari</name>
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<sZ>3 aut.</sZ>
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</author>
<author><name sortKey="Holt, E M" sort="Holt, E M" uniqKey="Holt E" first="E. M." last="Holt">E. M. Holt</name>
<affiliation><inist:fA14 i1="03"><s1>Department of Chemistry, Oklahoma State University</s1>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carrier density</term>
<term>Chemical composition</term>
<term>Cobalt phosphates</term>
<term>Crystal structure</term>
<term>Crystallographic site</term>
<term>Electric impedance</term>
<term>Experimental study</term>
<term>Frequency dependence</term>
<term>Hopping conductivity</term>
<term>Ion mobility</term>
<term>Ionic conductivity</term>
<term>Manganese phosphates</term>
<term>Nickel phosphates</term>
<term>Quaternary compounds</term>
<term>Sodium phosphates</term>
<term>Tunnel effect</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Conductivité ionique</term>
<term>Mobilité ion</term>
<term>Effet tunnel</term>
<term>Impédance électrique</term>
<term>Structure cristalline</term>
<term>Site cristallographique</term>
<term>Dépendance fréquence</term>
<term>Densité porteur charge</term>
<term>Conductivité saut</term>
<term>Sodium phosphate</term>
<term>Manganèse phosphate</term>
<term>Cobalt phosphate</term>
<term>Nickel phosphate</term>
<term>Composé quaternaire</term>
<term>Composition chimique</term>
<term>Etude expérimentale</term>
<term>Ca Na O P</term>
<term>Na8-2xNi4+x(P2O7)4</term>
<term>Na Ni O P</term>
<term>6630H</term>
<term>Impédance complexe</term>
<term>Na8-2xMn4+x(P2O7)4</term>
<term>Mn Na O P</term>
<term>Na8-2xCo4+x(P2O7)4</term>
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<front><div type="abstract" xml:lang="en">Investigation of electrical properties inside double phosphates Na<sub>8-2x</sub>
M<sup>2+</sup>
<sub>4+x</sub>
(P<sub>2</sub>
O<sub>7</sub>
)<sub>4</sub>
 containing simultaneously the Na<sup>+</sup>
 ion and a divalent cation (M<sup>2+</sup>
=Mn<sup>2+</sup>
, Co<sup>2+</sup>
, Ni<sup>2+</sup>
) is undertaken by impedance spectroscopy. Ionic conductivity in these materials is due to Na<sup>+</sup>
 ion mobility in tunnels along the c-axis centred on the (0,0,0) position. The best performance are obtained for the Co-phase. Correlations between structure and electrical properties are established.</div>
</front>
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<fA08 i1="01" i2="1" l="ENG"><s1>Structure and Na<sup>+</sup>
 ion conductivity inside double phosphates of Na<sub>8-2x</sub>
M<sup>2+</sup>
<sub>4+x</sub>
(P<sub>2</sub>
O<sub>7</sub>
)<sub>4</sub>
 formulation (M=Mn, Co and Ni)</s1>
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<fA11 i1="01" i2="1"><s1>DRIDI (N.)</s1>
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<fA11 i1="02" i2="1"><s1>BOUKHARI (A.)</s1>
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<fA11 i1="03" i2="1"><s1>REAU (J. M.)</s1>
</fA11>
<fA11 i1="04" i2="1"><s1>HOLT (E. M.)</s1>
</fA11>
<fA14 i1="01"><s1>Laboratoire de Chimie du Solide Appliqué, Université Mohammed V, Av. Ibn Batouta, B.P. 1014</s1>
<s2>Rabat</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Institut de Chimie de la Matière Condensée de Bordeaux, 162 Av. Dr. A. Schweitzer</s1>
<s2>33608 Pessac</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Department of Chemistry, Oklahoma State University</s1>
<s2>Stillwater, OH 74078</s2>
<s3>USA</s3>
<sZ>4 aut.</sZ>
</fA14>
<fA20><s1>25-30</s1>
</fA20>
<fA21><s1>1998</s1>
</fA21>
<fA23 i1="01"><s0>ENG</s0>
</fA23>
<fA43 i1="01"><s1>INIST</s1>
<s2>18305</s2>
<s5>354000079032640030</s5>
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<s1>© 1998 INIST-CNRS. All rights reserved.</s1>
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<fC01 i1="01" l="ENG"><s0>Investigation of electrical properties inside double phosphates Na<sub>8-2x</sub>
M<sup>2+</sup>
<sub>4+x</sub>
(P<sub>2</sub>
O<sub>7</sub>
)<sub>4</sub>
 containing simultaneously the Na<sup>+</sup>
 ion and a divalent cation (M<sup>2+</sup>
=Mn<sup>2+</sup>
, Co<sup>2+</sup>
, Ni<sup>2+</sup>
) is undertaken by impedance spectroscopy. Ionic conductivity in these materials is due to Na<sup>+</sup>
 ion mobility in tunnels along the c-axis centred on the (0,0,0) position. The best performance are obtained for the Co-phase. Correlations between structure and electrical properties are established.</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001B60F30H</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE"><s0>Conductivité ionique</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Ionic conductivity</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE"><s0>Mobilité ion</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG"><s0>Ion mobility</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Effet tunnel</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>Tunnel effect</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Impédance électrique</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Electric impedance</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Structure cristalline</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Crystal structure</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Site cristallographique</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Crystallographic site</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Sitio cristalográfico</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Dépendance fréquence</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>Frequency dependence</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE"><s0>Densité porteur charge</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG"><s0>Carrier density</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Conductivité saut</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Hopping conductivity</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Conductividad salto</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE"><s0>Sodium phosphate</s0>
<s2>NK</s2>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG"><s0>Sodium phosphates</s0>
<s2>NK</s2>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Manganèse phosphate</s0>
<s2>NK</s2>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Manganese phosphates</s0>
<s2>NK</s2>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>Cobalt phosphate</s0>
<s2>NK</s2>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Cobalt phosphates</s0>
<s2>NK</s2>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>Nickel phosphate</s0>
<s2>NK</s2>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG"><s0>Nickel phosphates</s0>
<s2>NK</s2>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="3" l="FRE"><s0>Composé quaternaire</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="3" l="ENG"><s0>Quaternary compounds</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE"><s0>Composition chimique</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="3" l="ENG"><s0>Chemical composition</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE"><s0>Etude expérimentale</s0>
<s5>17</s5>
</fC03>
<fC03 i1="16" i2="3" l="ENG"><s0>Experimental study</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE"><s0>Ca Na O P</s0>
<s4>INC</s4>
<s5>52</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE"><s0>Na8-2xNi4+x(P2O7)4</s0>
<s4>INC</s4>
<s5>53</s5>
</fC03>
<fC03 i1="19" i2="3" l="FRE"><s0>Na Ni O P</s0>
<s4>INC</s4>
<s5>54</s5>
</fC03>
<fC03 i1="20" i2="3" l="FRE"><s0>6630H</s0>
<s2>PAC</s2>
<s4>INC</s4>
<s5>56</s5>
</fC03>
<fC03 i1="21" i2="3" l="FRE"><s0>Impédance complexe</s0>
<s4>INC</s4>
<s5>92</s5>
</fC03>
<fC03 i1="22" i2="3" l="FRE"><s0>Na8-2xMn4+x(P2O7)4</s0>
<s4>INC</s4>
<s5>93</s5>
</fC03>
<fC03 i1="23" i2="3" l="FRE"><s0>Mn Na O P</s0>
<s4>INC</s4>
<s5>94</s5>
</fC03>
<fC03 i1="24" i2="3" l="FRE"><s0>Na8-2xCo4+x(P2O7)4</s0>
<s4>INC</s4>
<s5>95</s5>
</fC03>
<fC07 i1="01" i2="3" l="FRE"><s0>Métal transition composé</s0>
<s5>16</s5>
</fC07>
<fC07 i1="01" i2="3" l="ENG"><s0>Transition element compounds</s0>
<s5>16</s5>
</fC07>
<fN21><s1>110</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 98-0169809 INIST</NO>
<ET>Structure and Na<sup>+</sup>
 ion conductivity inside double phosphates of Na<sub>8-2x</sub>
M<sup>2+</sup>
<sub>4+x</sub>
(P<sub>2</sub>
O<sub>7</sub>
)<sub>4</sub>
 formulation (M=Mn, Co and Ni)</ET>
<AU>DRIDI (N.); BOUKHARI (A.); REAU (J. M.); HOLT (E. M.)</AU>
<AF>Laboratoire de Chimie du Solide Appliqué, Université Mohammed V, Av. Ibn Batouta, B.P. 1014/Rabat/Maroc (1 aut., 2 aut.); Institut de Chimie de la Matière Condensée de Bordeaux, 162 Av. Dr. A. Schweitzer/33608 Pessac/France (3 aut.); Department of Chemistry, Oklahoma State University/Stillwater, OH 74078/Etats-Unis (4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Solid state ionics; ISSN 0167-2738; Coden SSIOD3; Pays-Bas; Da. 1998; Vol. 107; No. 1-2; Pp. 25-30; Bibl. 8 ref.</SO>
<LA>Anglais</LA>
<EA>Investigation of electrical properties inside double phosphates Na<sub>8-2x</sub>
M<sup>2+</sup>
<sub>4+x</sub>
(P<sub>2</sub>
O<sub>7</sub>
)<sub>4</sub>
 containing simultaneously the Na<sup>+</sup>
 ion and a divalent cation (M<sup>2+</sup>
=Mn<sup>2+</sup>
, Co<sup>2+</sup>
, Ni<sup>2+</sup>
) is undertaken by impedance spectroscopy. Ionic conductivity in these materials is due to Na<sup>+</sup>
 ion mobility in tunnels along the c-axis centred on the (0,0,0) position. The best performance are obtained for the Co-phase. Correlations between structure and electrical properties are established.</EA>
<CC>001B60F30H</CC>
<FD>Conductivité ionique; Mobilité ion; Effet tunnel; Impédance électrique; Structure cristalline; Site cristallographique; Dépendance fréquence; Densité porteur charge; Conductivité saut; Sodium phosphate; Manganèse phosphate; Cobalt phosphate; Nickel phosphate; Composé quaternaire; Composition chimique; Etude expérimentale; Ca Na O P; Na8-2xNi4+x(P2O7)4; Na Ni O P; 6630H; Impédance complexe; Na8-2xMn4+x(P2O7)4; Mn Na O P; Na8-2xCo4+x(P2O7)4</FD>
<FG>Métal transition composé</FG>
<ED>Ionic conductivity; Ion mobility; Tunnel effect; Electric impedance; Crystal structure; Crystallographic site; Frequency dependence; Carrier density; Hopping conductivity; Sodium phosphates; Manganese phosphates; Cobalt phosphates; Nickel phosphates; Quaternary compounds; Chemical composition; Experimental study</ED>
<EG>Transition element compounds</EG>
<SD>Sitio cristalográfico; Conductividad salto</SD>
<LO>INIST-18305.354000079032640030</LO>
<ID>98-0169809</ID>
</server>
</inist>
</record>

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Structure and Na+ ion conductivity inside double phosphates of Na8-2xM2+4+x(P2O7)4 formulation (M=Mn, Co and Ni)

Structure and Na+ ion conductivity inside double phosphates of Na8-2xM2+4+x(P2O7)4 formulation (M=Mn, Co and Ni)

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