HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)

BaMMn7O16 (M = Mg, Mn, Fe, Ni) and AMn8O16 (A = Ba, K2) hollandite oxides were synthesized in air from metal carbonates and a mixture of simple oxides using the thermal decomposition in solid phase method at 850 C. The oxides BaMn8O16 and BaFeMn7O16 crystallized in the hollandite monoclinic phase, S...

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Autores principales:	BARBATO,SALVADOR, RESTOVIC,AMBROSIO, GAUTIER,JUAN LUIS
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2001
Materias:	Hollandite Cationic distribution Mixed oxides Manganates Ionic conductor
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000200010
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spelling	oai:scielo:S0366-164420010002000102008-11-04HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)BARBATO,SALVADORRESTOVIC,AMBROSIOGAUTIER,JUAN LUIS Hollandite Cationic distribution Mixed oxides Manganates Ionic conductor BaMMn7O16 (M = Mg, Mn, Fe, Ni) and AMn8O16 (A = Ba, K2) hollandite oxides were synthesized in air from metal carbonates and a mixture of simple oxides using the thermal decomposition in solid phase method at 850 C. The oxides BaMn8O16 and BaFeMn7O16 crystallized in the hollandite monoclinic phase, S.G. I2/m and S.G. P2(1)/n respectively, whereas K2Mn8O16 was tetragonal, S.G. I4/m. Two new phases are reported: BaMgMn7O16 and BaNiMn7O16 which crystallize in the hollandite monoclinic phase structure. The ionic distributions were proposed on the basis of several physicochemical analyses comporting XRD, GTA, magnetic susceptibility and oxidation power measurements. Barium and potassium manganites showed Mn3+ and Mn4+ in octahedral sites whereas BaMMn7O16 (M = Mg, Ni) exhibited Mn2+ and Mn4+ in sites B. On the other hand, iron-manganese hollandite, BaFeMn7O16, shows Fe3+ ions besides Mn3+ and Mn4+ cationsinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaBoletín de la Sociedad Chilena de Química v.46 n.2 20012001-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000200010en10.4067/S0366-16442001000200010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Hollandite Cationic distribution Mixed oxides Manganates Ionic conductor
spellingShingle	Hollandite Cationic distribution Mixed oxides Manganates Ionic conductor BARBATO,SALVADOR RESTOVIC,AMBROSIO GAUTIER,JUAN LUIS HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)
description	BaMMn7O16 (M = Mg, Mn, Fe, Ni) and AMn8O16 (A = Ba, K2) hollandite oxides were synthesized in air from metal carbonates and a mixture of simple oxides using the thermal decomposition in solid phase method at 850 C. The oxides BaMn8O16 and BaFeMn7O16 crystallized in the hollandite monoclinic phase, S.G. I2/m and S.G. P2(1)/n respectively, whereas K2Mn8O16 was tetragonal, S.G. I4/m. Two new phases are reported: BaMgMn7O16 and BaNiMn7O16 which crystallize in the hollandite monoclinic phase structure. The ionic distributions were proposed on the basis of several physicochemical analyses comporting XRD, GTA, magnetic susceptibility and oxidation power measurements. Barium and potassium manganites showed Mn3+ and Mn4+ in octahedral sites whereas BaMMn7O16 (M = Mg, Ni) exhibited Mn2+ and Mn4+ in sites B. On the other hand, iron-manganese hollandite, BaFeMn7O16, shows Fe3+ ions besides Mn3+ and Mn4+ cations
author	BARBATO,SALVADOR RESTOVIC,AMBROSIO GAUTIER,JUAN LUIS
author_facet	BARBATO,SALVADOR RESTOVIC,AMBROSIO GAUTIER,JUAN LUIS
author_sort	BARBATO,SALVADOR
title	HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)
title_short	HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)
title_full	HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)
title_fullStr	HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)
title_full_unstemmed	HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)
title_sort	hollandite cathodes for lithium ion batteries: 1. synthesis and characterization of the mm'mn7o16 compounds (m= k, ba; m' = mg, mn, fe, ni)
publisher	Sociedad Chilena de Química
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000200010
work_keys_str_mv	AT barbatosalvador hollanditecathodesforlithiumionbatteries1synthesisandcharacterizationofthemmmn7o16compoundsmkbammgmnfeni AT restovicambrosio hollanditecathodesforlithiumionbatteries1synthesisandcharacterizationofthemmmn7o16compoundsmkbammgmnfeni AT gautierjuanluis hollanditecathodesforlithiumionbatteries1synthesisandcharacterizationofthemmmn7o16compoundsmkbammgmnfeni
_version_	1718438128552771584

HOLLANDITE CATHODES FOR LITHIUM ION BATTERIES: 1. SYNTHESIS AND CHARACTERIZATION OF THE MM'Mn7O16 COMPOUNDS (M= K, Ba; M' = Mg, Mn, Fe, Ni)

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