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Title: The self-healing of defects induced by the hydriding phase transformation in palladium nanoparticles

Journal Article · · Nature Communications

Nanosizing can dramatically alter material properties by enhancing surface thermodynamic contributions, shortening diffusion lengths, and increasing the number of catalytically active sites per unit volume. These mechanisms have been used to explain the improved properties of catalysts, battery materials, plasmonic materials, etc. Here we show that Pd nanoparticles also have the ability to self-heal defects in their crystal structures. Using Bragg coherent diffractive imaging, we image dislocations nucleated deep in a Pd nanoparticle during the forward hydriding phase transformation that heal during the reverse transformation, despite the region surrounding the dislocations remaining in the hydrogen-poor phase. We show that defective Pd nanoparticles exhibit sloped isotherms, indicating that defects act as additional barriers to the phase transformation. Our results resolve the formation and healing of structural defects during phase transformations at the single nanoparticle level and offer an additional perspective as to how and why nanoparticles differ from their bulk counterparts.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1411033
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

References (35)

Reconstructing solute-induced phase transformations within individual nanocrystals journal April 2016
Avalanching strain dynamics during the hydriding phase transformation in individual palladium nanoparticles journal December 2015
Defect Engineering in Cubic Cerium Oxide Nanostructures for Catalytic Oxidation journal July 2011
Coherent X-ray diffraction imaging of strain at the nanoscale journal April 2009
Alternative mechanism for misfit dislocation generation during high-temperature Ge(Si)/Si (001) island growth journal September 2002
The β → α phase transformation in palladium-hydrogen alloys journal November 1976
Topological defect dynamics in operando battery nanoparticles journal June 2015
The Palladium-Hydrogen System journal August 1991
Nanowire Solar Cells journal August 2011
Theory of Coherent Nucleation in Phase-Separating Nanoparticles journal May 2013
HYDROGEN IN METALS: Microstructural Aspects journal August 2006
Elements of Modern X-ray Physics book March 2011
Capturing metastable structures during high-rate cycling of LiFePO4 nanoparticle electrodes journal June 2014
Theory of Nucleation in Phase-separating Nanoparticles text January 2013
Nanomaterials for Rechargeable Lithium Batteries journal April 2008
Nonequilibrium Structural Dynamics of Nanoparticles in LiNi 1/2 Mn 3/2 O 4 Cathode under Operando Conditions journal August 2014
Anomalous compliance and early yielding of nanoporous gold text January 2015
Nanosize effects in heterogeneous catalysis journal March 2013
Nucleation mechanisms and the elimination of misfit dislocations at mismatched interfaces by reduction in growth area journal March 1989
Stability Limits and Defect Dynamics in Ag Nanoparticles Probed by Bragg Coherent Diffractive Imaging journal February 2017
Strain Accommodation during Phase Transformations in Olivine-Based Cathodes as a Materials Selection Criterion for High-Power Rechargeable Batteries journal March 2007
A nanostructured cathode architecture for low charge overpotential in lithium-oxygen batteries journal August 2013
Three-dimensional imaging of dislocation dynamics during the hydriding phase transformation journal January 2017
Uncovering the intrinsic size dependence of hydriding phase transformations in nanocrystals journal August 2013
Three-dimensional imaging of dislocation propagation during crystal growth and dissolution journal June 2015
Hydride formation thermodynamics and hysteresis in individual Pd nanocrystals with different size and shape journal September 2015
Bragg coherent diffractive imaging of single-grain defect dynamics in polycrystalline films journal May 2017
The H-Pd (hydrogen-palladium) System journal February 1994
Anomalous compliance and early yielding of nanoporous gold journal July 2015
Direct visualization of hydrogen absorption dynamics in individual palladium nanoparticles journal January 2017
Roles of nanosize in lithium reactive nanomaterials for lithium ion batteries journal February 2011
Invited Article: A unified evaluation of iterative projection algorithms for phase retrieval journal January 2007
Thermodynamics of the hybrid interaction of hydrogen with palladium nanoparticles journal November 2015
In situ detection of hydrogen-induced phase transitions in individual palladium nanocrystals journal September 2014
Movement of Dislocations book February 2011

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An Ultrasensitive and Ultraselective Hydrogen Sensor Based on Defect‐Dominated Electron Scattering in Pt Nanowire Arrays journal November 2018
Impact and mitigation of angular uncertainties in Bragg coherent x-ray diffraction imaging journal April 2019
Oxidation induced strain and defects in magnetite crystals journal February 2019
Watching In Situ the Hydrogen Diffusion Dynamics in Magnesium on the Nanoscale conference January 2021
Coherent Bragg imaging of 60 nm Au nanoparticles under electrochemical control at the NanoMAX beamline journal August 2019