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Title: Chemical Redox Agent-Driven Noncorrosive Formation of Nanoporous Mg Structures for Advanced Hydrogen Storage

Journal Article · · ACS Nano

Light metal-based nanomaterials are widely used for energy storage due to their high energy density and surface-to-volume ratio. However, their high reactivity is paradoxically both the source of advantageous properties and a hurdle to the fabrication of stable nanostructures. Here, in this study, we demonstrate the formation of nanoporous Mg via chemical redox agent-driven dealloying, which ensures minimized surface passivation and results in fine nanostructures with <50 nm of interconnected metallic ligament despite the labile chemical properties of Mg. The thin passivation layer protects the metallic ligaments from severe coarsening by suppressing surface diffusion. The hydrogen storage performance of nanoporous Mg is investigated as an exemplar for energy applications, and the hydrogen ab/desorption kinetics is substantially enhanced compared to other nano-Mg with similar dimensions. Mesoscale simulations highlight the significance of the bicontinuous structure compared to the particle-like counterpart. This work offers valuable insights into the unexplored realm of reactive metal-based nanoporous structures, highlighting their potential for sustainable energy storage and carrier media.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
Ministry of Science and ICT (MSIT); National Research Foundation of Korea (NRF); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Hydrogen Fuel Cell Technologies Office (HFTO)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
2537974
Report Number(s):
LLNL--JRNL-866193; 1100865
Journal Information:
ACS Nano, Journal Name: ACS Nano Journal Issue: 5 Vol. 19; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (58)

Nanoporous Copper with Tunable Nanoporosity for SERS Applications journal April 2009
Monodisperse Magnesium Hydride Nanoparticles Uniformly Self-Assembled on Graphene journal August 2015
Beating Thermal Coarsening in Nanoporous Materials via High‐Entropy Design journal December 2019
Dealloying Ag–Al Alloy to Prepare Nanoporous Silver as a Substrate for Surface‐Enhanced Raman Scattering: Effects of Structural Evolution and Surface Modification journal May 2011
Review on Hydrogen Storage Performance of MgH2: Development and Trends journal February 2021
Effect of carbon nanoscaffolds on hydrogen storage performance of magnesium hydride journal August 2020
Nanoporous magnesium journal August 2018
Thermodynamic investigation of the magnesium–hydrogen system journal January 1999
Materials for hydrogen storage journal September 2003
A TEM based study of the microstructure during room temperature and low temperature hydrogen storage cycling in MgH2 promoted by Nb–V journal September 2012
Dealloyed nanoporous materials for electrochemical energy conversion and storage journal January 2022
Chemically polished lithium metal anode for high energy lithium metal batteries journal September 2018
Hydrogen absorption kinetics of magnesium fiber prepared by vapor deposition journal November 2011
Effect of in-situ formed Mg2Ni/Mg2NiH4 compounds on hydrogen storage performance of MgH2 journal October 2020
Catalytic effect of Ni nanoparticles on the desorption kinetics of MgH2 nanoparticles journal August 2009
Catalytic effects of different Ti-based materials on dehydrogenation performances of MgH2 journal October 2015
Magnesium-based energy materials: Progress, challenges, and perspectives journal November 2023
Imaging of 3D morphological evolution of nanoporous silicon anode in lithium ion battery by X-ray nano-tomography journal October 2018
Dimensional effects of nanostructured Mg/MgH 2 for hydrogen storage applications: A review journal May 2017
Nanointerface Engineering of Metal Hydrides for Advanced Hydrogen Storage journal January 2023
Nanoscale Mg–B via Surfactant Ball Milling of MgB 2 : Morphology, Composition, and Improved Hydrogen Storage Properties journal September 2020
Destabilization of Mg Hydride by Self-Organized Nanoclusters in the Immiscible Mg–Ti System journal May 2015
Stability of Catalyzed Magnesium Hydride Nanocrystalline During Hydrogen Cycling. Part I: Kinetic Analysis journal September 2015
Ligament Evolution in Nanoporous Cu Films Prepared by Dealloying journal October 2018
Dealloyed Air- and Water-Sensitive Nanoporous Metals and Metalloids for Emerging Energy Applications journal June 2022
Passivation Dynamics in the Anisotropic Deposition and Stripping of Bulk Magnesium Electrodes During Electrochemical Cycling journal August 2015
One-Step, Vacuum-Assisted Construction of Micrometer-Sized Nanoporous Silicon Confined by Uniform Two-Dimensional N-Doped Carbon toward Advanced Li Ion and MXene-Based Li Metal Batteries journal February 2022
Monolithic Nanoporous Zn Anode for Rechargeable Alkaline Batteries journal February 2020
Eco-friendly Synthesis of Nanoporous Magnesium by Air-Free Electrolytic Dealloying with Recovery of Sacrificial Elements for Energy Conversion and Storage Applications journal January 2021
Chemical Redox Agents for Organometallic Chemistry journal January 1996
Magnesium Nanowires:  Enhanced Kinetics for Hydrogen Absorption and Desorption journal May 2007
Size-Dependent Hydrogen Storage Properties of Mg Nanocrystals Prepared from Solution journal July 2011
Hydrogen Storage Properties of a Mg–Ni Nanocomposite Coprecipitated from Solution journal July 2014
Tuning the Thermodynamic Properties of MgH2 at the Nanoscale via a Catalyst or Destabilizing Element Coating Strategy journal November 2014
ALD Functionalized Nanoporous Gold: Thermal Stability, Mechanical Properties, and Catalytic Activity journal August 2011
Correlation of the structure and applications of dealloyed nanoporous metals in catalysis and energy conversion/storage journal January 2015
Mg–TM (TM: Ti, Nb, V, Co, Mo or Ni) core–shell like nanostructures: synthesis, hydrogen storage performance and catalytic mechanism journal January 2014
Substrate-independent and catalyst-free synthesis of magnesium nanowires journal January 2019
Magnesium: properties and rich chemistry for new material synthesis and energy applications journal January 2023
Nucleation and growth mechanisms of nano magnesium hydride from the hydrogen sorption kinetics journal January 2013
Size effects and hydrogen storage properties of Mg nanoparticles synthesised by an electroless reduction method journal January 2014
Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points journal December 2000
A climbing image nudged elastic band method for finding saddle points and minimum energy paths journal December 2000
Ultrafine nanoporous gold by low-temperature dealloying and kinetics of nanopore formation journal August 2007
Self-assembly of gas-phase synthesized magnesium nanoparticles on room temperature substrates journal December 2014
Inhomogeneous Electron Gas journal November 1964
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Projector augmented-wave method journal December 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Generalized Gradient Approximation Made Simple journal October 1996
Light, strong, and stable nanoporous aluminum with native oxide shell journal July 2021
Dealloying and Dealloyed Materials journal July 2016
Dealloying Silver/Gold Alloys in Neutral Silver Nitrate Solution: Porosity Evolution, Surface Composition, and Surface Oxides journal January 2008
Hydrogen diffusion and effect of grain size on hydrogenation kinetics in magnesium hydrides journal February 2008
Effects of lithium, indium, and zinc on the lattice parameters of magnesium journal December 2008
Nanoporous metal by dealloying for electrochemical energy conversion and storage journal January 2018
Pattern formation during electrochemical and liquid metal dealloying journal January 2018