Zeolite supported palladium nanoparticle characterization for fuel cell application

Yao, Jun; Yao, Yufeng

Abstract

© 2017 Hydrogen Energy Publications LLC Palladium (Pd) has been widely used as a type of hydrogen storage material and has attracted much attention for fuel cell applications, due to its high solubility and mobility of hydrogen in Pd. In this study, Pd nanoparticles made by 1.5 wt% Pd loading on Y-zeolite under pre-treatment was employed to investigate their electrochemical activities using cyclic voltammetry (CV), and detailed local structural characterization of Pd cluster was probed by the extended X-ray absorption fine structure. Pd nanoparticle sizes were predicted at 0.81 nm–1.2 nm and the CV measurement has demonstrated that Pd zeolite catalyst has exhibited a similar tendency to those 40% Pd on XC-72R carbon. The hydrogen spillover process and surface conductance pathways contribute to the electrochemical behavior on Pd surface. In electrochemical environment, hydrogen is able to form hydride phase on Pd surface by either direct hydrogen adsorption or migrating to the centre of Pd.

• Journal Article Type: Article
• Acceptance Date: Apr 18, 2017
• Online Publication Date: May 9, 2017
• Publication Date: Jul 20, 2017
• Deposit Date: May 10, 2017
• Publicly Available Date: May 9, 2018
• Journal: International Journal of Hydrogen Energy
• Print ISSN: 0360-3199
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 42
• Issue: 29
• Pages: 18560-18567
• DOI: https://doi.org/10.1016/j.ijhydene.2017.04.182
• Keywords: zeolite supported palladium nanoparticle, EXAFS and CV techniques, fuel cell application
• Public URL: https://uwe-repository.worktribe.com/output/884063
• Publisher URL: http://dx.doi.org/10.1016/j.ijhydene.2017.04.182
• Contract Date: May 10, 2017