Proton conductivity of phosphoric acid derivative of fullerene

Autor:	Koichiro Hinokuma, Yong Ming Li
Rok vydání:	2002
Předmět:	Inorganic chemistry Analytical chemistry Thermal desorption Humidity General Chemistry Conductivity Atmospheric temperature range Condensed Matter Physics Thermal conduction chemistry.chemical_compound chemistry General Materials Science Relative humidity Phosphoric acid Proton conductor
Zdroj:	Solid State Ionics. 150:309-315
ISSN:	0167-2738
Popis:	The proton conductive property of methano [60] fullerene diphosphoric acid has been investigated under various humidity conditions at the temperature range between 15 and 45 °C. It shows proton conductivity as high as 10 −2 S cm −1 at 25 °C under relative humidity of 95%. Thermal analyses including TG–DTA and thermal desorption mass spectroscopy (TDS) confirm that the compound is thermally stable up to 200 °C. Proton conduction of the compound depends very much on humidity or water content. The logarithmic conductivity at 25 °C is increased linearly with increasing relative humidity. The activation energy ( E a ) estimated from the slope of log( σT ) vs. 1/ T is decreased from 1.08 to 0.52 eV, as the relative humidity is increased from 40% to 75%. The humidity dependence of conductivity is discussed in the light of the observed hydration isotherm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5d37868612bf5d4d1780b64de3b9236a https://doi.org/10.1016/s0167-2738(02)00449-6 Zobrazit plný text záznamu Full Text from ScienceDirect