Resistivity Testing of Palladium Dilution Limits in CoPd Alloys for Hydrogen Storage

Materials

Alexander Gerber¹  Gregory Kopnov¹  Sudhansu Sekhar Das¹ 

[1] School of Physics and Astronomy, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel;

关键词: hydrogen storage;    palladium alloys;    thin films;   

DOI  :  10.3390/ma15010111

来源: DOAJ

【 摘 要 】

Palladium satisfies most of the requirements for an effective hydrogen storage material with two major drawbacks: it has a relatively low gravimetric hydrogen density and is prohibitively expensive for large scale applications. Pd-based alloys should be considered as possible alternatives to a pure Pd. The question is how much one can dilute the Pd concentration in a variety of candidate materials while preserving the hydrogen absorption capability. We demonstrate that the resistivity measurements of thin film alloy samples can be used for a qualitative high-throughput screening and study of the hydrogen absorbing properties over the entire range of palladium concentrations. Contrary to palladium-rich alloys where additional hydrogen scattering indicates a degree of hydrogen content, the diluted alloy films respond by a decrease in resistance due to their thickness expansion. Evidence of significant hydrogen absorption was found in thin CoPd films diluted to just 20% of Pd.

【 授权许可】

Unknown