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Master's Dissertation
DOI
10.11606/D.54.1980.tde-14102009-094630
Document
Author
Full name
Nelson Jose Heraldo Gallo
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1980
Supervisor
Title in Portuguese
Estudos de condutividade elétrica em compostos iônicos do tipo ABF2 e A2B'F6.
Keywords in Portuguese
Compostos iônicos
Condutividade elétrica
Hexafluor fosfatos
Abstract in Portuguese
Neste trabalho determinou-se os valores de condutividade elétrica em diversos compostos iônicos do tipo ABF6 (A= Li, Na, K, Ag; B= P, Sb, Ti), utilizando-se a técnica de corrente contínua. Todos estes compostos possuem valores de condutividade elétrica maiores que os halogenetos alcalinos, mas nenhum deles podem ser classificados como condutores superiônicos. O maior valor obtido pertence ao sal LiPF6 que tem con¬dutividade elétrica de 1,03 x 107 Ohm-1 cm-1 na temperatura de 150°C valor este várias ordens de grandeza maior que KCl na mesma temperatura (3,26 x 10-12 Ohm-1cm1). Um breve apanhado sobre os condutores superiônicos e fornecido, juntamente com possíveis aplicações destes compostos em baterias de estado sólido.
Title in English
Study of electrical conductivity of ABF2 and A2B'F6 ionic compounds.
Keywords in English
Electrical conductivity
Hexafluor phosphates
Ionic compounds
Abstract in English
The D.C. electrical conductivity technique has been used to determine the electrical conductivity values of several ionic compounds of the ABF6 family (A=Li, Na, K, Ag; B = P, Sb, Ti). Al1 these compounds have electrical conductivity values higher than those of alkali halides, however none of then can be classified as superionic conductors. Of the several ionic compounds studied, it was found that LiPF6 has the greatest electrical conductivity value at 150°C (1,03 x 107 Ohm-1 cm-1). This values is several ordes of magnitude higher than those of KCl at the same temperature (3,26 x 10-12 Ohm-1cm1). A short review of superionic conductors is introduced and some possible uses of these compounds in solid state batteries are discusses.
 
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NelsonGalloM.pdf (7.34 Mbytes)
Publishing Date
2009-10-20
 
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