Direct Observation of Phase Change Accommodating Hydrogen Uptake in Bimetallic Nanoparticles
Source abstract
Abstract
Hydrogen holds great promise as a cleaner alternative to fossil fuels, but its efficient and affordable storage remains a significant challenge. Bimetallic systems, such as Pd and Ni, present a promising option for storing hydrogen. In this study, using the combination of different cutting-edge X-ray and electron techniques, we observed the transformations of Pd-Ni nanoparticles, which initially consist of a NiO-rich shell surrounding a Pd-rich core but undergo a major transformation when they interact with hydrogen. During hydrogen exposure, the Pd core breaks into smaller pockets, dramatically increasing its surface area and enhancing the hydrogen storage capacity, especially in nanoparticles with lower Pd content. The findings provide a deep understanding of the morphological changes at the atomic level during hydrogen storage and contribute to designing cost-effective hydrogen storage using multimetallic systems.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Hydrogen Storage and Materials · Catalytic Processes in Materials Science · Catalysis and Hydrodesulfurization Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Programa de Pós-Graduação em Física, Instituto de Física
Universidade Federal do Rio Grande do Sul (UFRGS)
Advanced Light Source
Lawrence Berkeley National Laboratory
Chemical Sciences Division
Materials Science Division
ALBA Synchrotron Light Source, Cerdanyola del Vallès, Barcelona 08290, Spain
Department of Physics and Astronomy
University of California
Departamento de Química Orgânica, Instituto de Química
Funding
Ministerio de Ciencia, Innovaci?n y Universidades · Basic Energy Sciences · European Regional Development Fund · Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico · Funda??o de Amparo ? Pesquisa do Estado do Rio Grande do Sul · Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior · FWP
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