Pd-H as an irreplaceable model system for the study of hydrogen electrosorption in aqueous and non-aqueous electrolytes
- Resource Type
- Original Paper
- Authors
- Hubkowska, K.; Pająk, M.; Monikowska, D.; Czerwiński, A.
- Source
- Journal of Solid State Electrochemistry: Energy, Materials and Environmental Science & Technology. 28(3-4):1159-1169
- Subject
- Hydrogen sorption
Pd-H system
α → β/β → α phase transition
Non-aqueous electrolytes
Ionic liquids
- Language
- English
- ISSN
- 1432-8488
1433-0768
Even though Pd-H system has been known since the nineteenth century, it is still of interest to scientists. Pd thin film electrode (called as a Limited Volume Electrode – LVE) is able to electrosorb hydrogen form aqueous (acid, base) and non-aqueous electrolytes (e.g. ionic liquids). Therefore Pd-H is an irreplaceable model system for the study of hydrogen electrosorption in different media. The paper presents: (1) short overview of the study of hydrogen sorption in Pd, (2) the detailed description of the electrochemical measurement methods and (3) the equations for the determination of hydrogen electrosorption charges needed to hydrogen electrosorption isotherms creation. The presented approach can be applied for laboratory work. The results show that Pd-LVE can be effectively used as a model system before the studies of multicomponent hydrogen storage alloys (e.g. AB5 alloys).Graphical abstract: