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Apparatus for Measurement of Protonic Conductivity of Powdered Materials as a Function of Temperature and Humidityстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 июня 2024 г.
- Авторы: Garanin1 Evgeny M., Tolmachev2 Yuriy V., 3, 1
- Журнал: Journal of the Electrochemical Society
- Том: 155
- Год издания: 2008
- Издательство: Electrochemical Society, Inc.
- Местоположение издательства: United States
- Номер статьи: B1251
- DOI: 10.1149/1.2987753
- Аннотация: Presented is an approach to measuring protonic conductivity of powdered samples. The features of this method are the utilization of porous sample holder, which allows for an easy control of the water activity in the sample, the use of spring-loaded contact electrodes, which prevents the loss of contact upon sample shrinking, as well as the implementation of four-electrode ac impedance measurements, which reduces the inaccuracy due to interfacial capacitance of the probes. We also report conductivities of a low equivalent weight version of Nafion in film and powder forms as functions of relative humidity. These data show that the conductivity of a powder is several times lower than the conductivity of a film, which is likely due to the porous nature and intergrain resistances in the powder.
- Добавил в систему: Толмачёв Юрий Вячеславович