Related Experiment Video
Updated: Jul 22, 2026
09:04
Fabrication of VB2/Air Cells for Electrochemical Testing
Published on: August 5, 2013
12.0K
Low-Pressure Deuterium Storage on Palladium-Coated Titanium Nanofilms: A Versatile Model System for Tritium-Based
Turkan Gamze Ulusoy Ghobadi1, Yusuf Kocak1,2, Ahsan Jalal2
1Nanotechnology Research Center (NANOTAM), Bilkent University, Ankara 06800, Turkey.
ACS Applied Materials & Interfaces
|August 17, 2023
Summary
Optimized palladium-coated titanium films efficiently store deuterium, forming stable titanium deuteride phases. A 10 nm palladium layer enhances deuterium uptake and release for energy applications.
Area of Science:
- Materials Science and Engineering
- Nanotechnology
- Surface Science
Background:
- Efficient deuterium (D2(g)) storage is crucial for energy applications.
- Palladium (Pd) and titanium (Ti) thin films are investigated for their hydrogen isotope storage capabilities.
- Understanding structure-property relationships in nanostructured films is key to optimizing storage performance.
Purpose of the Study:
- To fine-tune deuterium storage in Pd-coated Ti ultra-thin films by controlling film parameters.
- To investigate structure-functionality relationships in Ti/Pd nanofilms for enhanced D2(g) storage.
- To evaluate the potential of optimized Ti/Pd systems in tritium-based betavoltaic battery devices.
Main Methods:
- Systematic variation of Pd overlayer thickness, Ti film thickness, D2(g) pressure, exposure duration, and temperature.
- Characterization using X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), and Temperature Programmed Desorption (TPD).
- Deuteration of Ti/Pd systems to form titanium deuteride (TiDx) phases.
Main Results:
- Achieved D/Ti ratios up to 1.53, forming ordered TiDx phases with strong Ti-D interactions and high thermal stability (>460 °C).
- Over 90% of stored deuterium resides in the Ti component, desorbing as D2(g).
- Identified an optimal Pd film thickness of 10 nm for efficient D2(g) uptake and diffusion, sensitive to surface roughness.
Conclusions:
- Deuterium storage is significantly enhanced in Pd-coated Ti films with optimized nanostructure, particularly with a 10 nm Pd overlayer.
- The Ti component dominates deuterium storage, forming stable titanium deuteride phases with high thermal desorption temperatures.
- Optimized Ti/Pd systems show promise for applications in tritium-based betavoltaic batteries, demonstrating significant β-particle emission yields.
