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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Structure and lithium-ion mobility in Li1.5M0.5Ge1.5(PO4)(3) (M = Ga, Sc, Y) NASICON glass-ceramics

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Autor(es):
Almeida Silva, Igor d'Anciaes [1] ; Nieto-Munoz, Adriana M. [2] ; Rodrigues, Ana Candida M. [3] ; Eckert, Hellmut [1, 4]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13566590 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Programa Posgrad Ciencia & Engn Mat, Sao Carlos - Brazil
[3] Univ Fed Sao Carlos, Dept Engn Mat, Sao Carlos - Brazil
[4] WWU Munster, Inst Phys Chem, Munster - Germany
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Journal of the American Ceramic Society; v. 103, n. 7, SI JAN 2020.
Citações Web of Science: 0
Resumo

This work reports structural and lithium-ion mobility studies in NASICON single- or multiple phase Li1+xMxGe2-x(PO4)(3) (M = Ga3+, Sc3+, Y3+) glass-ceramics using solid-state NMR techniques, X-ray powder diffraction, and impedance spectroscopy. X-ray powder diffraction data show the successful incorporation of Ga3+ and Sc3+ into the Ge4+ octahedral sites of the NASICON structure at the levels of x = 0.5 and 0.4, respectively. The glass-to-crystal transition was further characterized by multinuclear NMR and electrical conductivity measurements. Among the studied samples, the gallium-containing glass-ceramic presented the highest DC conductivity, 1.1 x 10(-4) S/cm at room temperature, whereas for the Sc-containing samples, the maximum room temperature conductivity that could be reached was 4.8 x 10(-6) S/cm. No indications of any substitution of Ge4+ by Y3+ could be found. (AU)

Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
Beneficiário:Edgar Dutra Zanotto
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs