Pd-Ag hydrogen content and electrical resistivity: Temperature and pressure effect
Apstrakt
A Pd-Ag (silver 21 wt.%) thin sheet has been tested in order to measure its electrical resistivity by means of electrochemical impedance spectroscopy under different hydrogenation conditions in the temperature range 25-350 degrees C. The metal sheet has been assembled with the electrical contacts in a gas tight module where pure hydrogen has been fed at a pressure of 100 and 200 kPa. The electrical resistivity vs. both the temperature and hydrogen pressure presents a characteristic S-shape curve with a minimum and a maximum of the resistivity. This behaviour permitted to recognize three stages: (1) introduction of H into Pd-Ag lattice up to a well-defined HIM ratio increases the resistivity; (2) further uptake of hydrogen with a decrease of resistivity until a higher HIM ratio; (3) above this higher HIM ratio the resistivity increases sharply. The behaviour of the electrical resistivity is discussed in details by considering the hydrogen uploading into the metal lattice, its effect on ...the conduction electrons and the scattering of the hydrogen atoms into the metal lattice. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Ključne reči:
Pd-Ag alloy / Hydrogen / Electrical resistivityIzvor:
International Journal of Hydrogen Energy, 2012, 37, 9, 7925-7933Finansiranje / projekti:
- Fizika i hemija sa jonskim snopovima (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45006)
- ICTP, Trieste, Italy
DOI: 10.1016/j.ijhydene.2012.01.108
ISSN: 0360-3199
WoS: 000305040200062
Scopus: 2-s2.0-84860334273
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Pozio, Alfonso AU - Jovanović, Zoran M. AU - Lo Presti, R. AU - De Francesco, M. AU - Tosti, Silvano PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4877 AB - A Pd-Ag (silver 21 wt.%) thin sheet has been tested in order to measure its electrical resistivity by means of electrochemical impedance spectroscopy under different hydrogenation conditions in the temperature range 25-350 degrees C. The metal sheet has been assembled with the electrical contacts in a gas tight module where pure hydrogen has been fed at a pressure of 100 and 200 kPa. The electrical resistivity vs. both the temperature and hydrogen pressure presents a characteristic S-shape curve with a minimum and a maximum of the resistivity. This behaviour permitted to recognize three stages: (1) introduction of H into Pd-Ag lattice up to a well-defined HIM ratio increases the resistivity; (2) further uptake of hydrogen with a decrease of resistivity until a higher HIM ratio; (3) above this higher HIM ratio the resistivity increases sharply. The behaviour of the electrical resistivity is discussed in details by considering the hydrogen uploading into the metal lattice, its effect on the conduction electrons and the scattering of the hydrogen atoms into the metal lattice. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. T2 - International Journal of Hydrogen Energy T1 - Pd-Ag hydrogen content and electrical resistivity: Temperature and pressure effect VL - 37 IS - 9 SP - 7925 EP - 7933 DO - 10.1016/j.ijhydene.2012.01.108 ER -
@article{ author = "Pozio, Alfonso and Jovanović, Zoran M. and Lo Presti, R. and De Francesco, M. and Tosti, Silvano", year = "2012", abstract = "A Pd-Ag (silver 21 wt.%) thin sheet has been tested in order to measure its electrical resistivity by means of electrochemical impedance spectroscopy under different hydrogenation conditions in the temperature range 25-350 degrees C. The metal sheet has been assembled with the electrical contacts in a gas tight module where pure hydrogen has been fed at a pressure of 100 and 200 kPa. The electrical resistivity vs. both the temperature and hydrogen pressure presents a characteristic S-shape curve with a minimum and a maximum of the resistivity. This behaviour permitted to recognize three stages: (1) introduction of H into Pd-Ag lattice up to a well-defined HIM ratio increases the resistivity; (2) further uptake of hydrogen with a decrease of resistivity until a higher HIM ratio; (3) above this higher HIM ratio the resistivity increases sharply. The behaviour of the electrical resistivity is discussed in details by considering the hydrogen uploading into the metal lattice, its effect on the conduction electrons and the scattering of the hydrogen atoms into the metal lattice. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.", journal = "International Journal of Hydrogen Energy", title = "Pd-Ag hydrogen content and electrical resistivity: Temperature and pressure effect", volume = "37", number = "9", pages = "7925-7933", doi = "10.1016/j.ijhydene.2012.01.108" }
Pozio, A., Jovanović, Z. M., Lo Presti, R., De Francesco, M.,& Tosti, S.. (2012). Pd-Ag hydrogen content and electrical resistivity: Temperature and pressure effect. in International Journal of Hydrogen Energy, 37(9), 7925-7933. https://doi.org/10.1016/j.ijhydene.2012.01.108
Pozio A, Jovanović ZM, Lo Presti R, De Francesco M, Tosti S. Pd-Ag hydrogen content and electrical resistivity: Temperature and pressure effect. in International Journal of Hydrogen Energy. 2012;37(9):7925-7933. doi:10.1016/j.ijhydene.2012.01.108 .
Pozio, Alfonso, Jovanović, Zoran M., Lo Presti, R., De Francesco, M., Tosti, Silvano, "Pd-Ag hydrogen content and electrical resistivity: Temperature and pressure effect" in International Journal of Hydrogen Energy, 37, no. 9 (2012):7925-7933, https://doi.org/10.1016/j.ijhydene.2012.01.108 . .