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Resumen

 

HYDROGEN STORAGE DETERMINATION IN CARBON NANOFIBERS

DETERMINACION DEL ALMACENAMIENTO DE HIDROGENO EN NANOFIBRAS DE CARBONO
MSc. Rafael Bolívar L.
MSc. Ivan Uribe P. 

Abstrac: The hydrogen storage capacity was mesured on carbon nanofibers by means of electrochemist methode used sustainer electrodes. It was change the kind of support material and determined the influence of its on the storage capacity. The carbon nanofibers was termal treatment with CO2 and O2 and chemist treatment with HNO3. The termal treatment reduced the storotage capacity while the chemist treatment increased it.It mesured different storage capacity because the used of diferents matrix, nanofibers percentage, charge current ant charge time. We found that the best sotrage capacity was 759 mAh/g.

Resumen: Fue medida la capacidad de almacenamiento de hidrógeno en nanofibras de carbono (CNF) mediante técnicas electroquímicas utilizando electrodos sustentados. Se varió el tipo de material de soporte de electrodos y se determinó la influencia de estos sobre la capacidad de almacenamiento. Las CNF se sometieron a tratamientos térmicos con CO2 y O2, y ataque químico con HNO3. Los tratamientos térmicos disminuyeron su propiedad adsorsora mientras que el químico la potencializó. Se obtuvo capacidades de almacenamiento variables debido a las diferentes matrices, porcentajes de nanofibras,corrientes y tiempos de carga. Se encontró una máxima capacidad de almacenamiento de 759 mAh/g.

Keywords: Hydrogen Storage, Carbon nanofibers.