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Title: Extracting an Empirical Intermetallic Hydride Design Principle from Limited Data via Interpretable Machine Learning

Journal Article · · Journal of Physical Chemistry Letters

An open question in the metal hydride community is whether there are simple, physics-based design rules that dictate the thermodynamic properties of these materials across the variety of structures and chemistry they can exhibit. While black box machine learning-based algorithms can predict these properties with some success, they do not directly provide the basis on which these predictions are made, therefore complicating the a priori design of novel materials exhibiting a desired property value. In this work we demonstrate how feature importance, as identified by a gradient boosting tree regressor, uncovers the strong dependence of the metal hydride equilibrium H2 pressure on a volume-based descriptor that can be computed from just the elemental composition of the intermetallic alloy. Elucidation of this simple structure–property relationship is valid across a range of compositions, metal substitutions, and structural classes exhibited by intermetallic hydrides. Finally, this permits rational targeting of novel intermetallics for high-pressure hydrogen storage (low-stability hydrides) by their descriptor values, and we predict a known intermetallic to form a low-stability hydride (as confirmed by density functional theory calculations) that has not yet been experimentally investigated.

Research Organization:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office (HFTO)
Grant/Contract Number:
AC04-94AL85000; NA-0003525
OSTI ID:
1595021
Report Number(s):
SAND-2019-14626J; 682475; TRN: US2100658
Journal Information:
Journal of Physical Chemistry Letters, Vol. 11, Issue 1; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

References (68)

Hydrogen-storage materials for mobile applications journal November 2001
High capacity hydrogenstorage materials: attributes for automotive applications and techniques for materials discovery journal January 2010
Thermal decomposition of complex metal hydrides journal June 1972
Structure of the Complex Metal Hydride BaReH9 journal September 1994
Formation of metal hydrides by mechanical alloying journal February 1995
Nanocrystalline metal hydrides journal May 1997
The renaissance of hydrides as energy materials journal December 2016
Exploring the High-Pressure Materials Genome journal November 2018
Nanostructured Metal Hydrides for Hydrogen Storage journal October 2018
Metal hydride hydrogen compressors: A review journal April 2014
Metal hydrides used as negative electrode materials for Li-ion batteries journal February 2016
Application of hydrides in hydrogen storage and compression: Achievements, outlook and perspectives journal March 2019
A correlation between the interstitial hole sizes in intermetallic compounds and the thermodynamic properties of the hydrides formed from those compounds journal November 1977
Relationships between intermetallic compound structure and hydride formation journal March 1981
An investigation of R6Fe23Hx thermodynamics journal October 1983
A microcalorimetric investigation of the thermodynamics and kinetics of hydriding-dehydriding reactions journal September 1996
Intermetallic compounds as negative electrodes of Ni/MH batteries journal February 2001
The electronegativity parameter for transition metals: Heat of formation and charge transfer in alloys journal July 1973
Hydrogen absorption in LaNi5 and related compounds: Experimental observations and their explanation journal March 1974
Hydrogen absorption in intermetallic compounds of thorium journal September 1975
Hydrides of intermetallic compounds: A review of stabilities, stoichiometries and preferred hydrogen sites journal May 1983
Calculation of the enthalpy of metal hydride formation journal November 1987
Identification of Destabilized Metal Hydrides for Hydrogen Storage Using First Principles Calculations journal May 2006
Using first principles calculations to identify new destabilized metal hydride reactions for reversible hydrogen storage journal January 2007
Discovery of novel hydrogen storage materials: an atomic scale computational approach journal January 2008
Theoretical Limits of Hydrogen Storage in Metal–Organic Frameworks: Opportunities and Trade-Offs journal August 2013
What Are the Best Materials To Separate a Xenon/Krypton Mixture? journal June 2015
Machine learning for molecular and materials science journal July 2018
Automatic Chemical Design Using a Data-Driven Continuous Representation of Molecules journal January 2018
Metallic Metal–Organic Frameworks Predicted by the Combination of Machine Learning Methods and Ab Initio Calculations journal July 2018
New tolerance factor to predict the stability of perovskite oxides and halides journal February 2019
Generalized Neural-Network Representation of High-Dimensional Potential-Energy Surfaces journal April 2007
Predicting density functional theory total energies and enthalpies of formation of metal-nonmetal compounds by linear regression journal February 2016
Insightful classification of crystal structures using deep learning journal July 2018
Unsupervised word embeddings capture latent knowledge from materials science literature journal July 2019
Data-Driven Discovery of Photoactive Quaternary Oxides Using First-Principles Machine Learning journal August 2019
End-to-End Differentiable Learning of Protein Structure journal April 2019
Crystal Graph Convolutional Neural Networks for an Accurate and Interpretable Prediction of Material Properties journal April 2018
Linking synthesis and structure descriptors from a large collection of synthetic records of zeolite materials journal October 2019
SISSO: A compressed-sensing method for identifying the best low-dimensional descriptor in an immensity of offered candidates journal August 2018
Machine learning based prediction of metal hydrides for hydrogen storage, part I: Prediction of hydrogen weight percent journal March 2019
Machine learning based prediction of metal hydrides for hydrogen storage, part II: Prediction of material class journal March 2019
A simple constrained machine learning model for predicting high-pressure-hydrogen-compressor materials journal January 2018
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Materials Design and Discovery with High-Throughput Density Functional Theory: The Open Quantum Materials Database (OQMD) journal September 2013
AFLOWLIB.ORG: A distributed materials properties repository from high-throughput ab initio calculations journal June 2012
Destabilization of the Mg-H System through Elastic Constraints journal June 2009
Metal-hydrogen systems with an exceptionally large and tunable thermodynamic destabilization journal November 2017
Optimizing nanoporous materials for gas storage journal January 2014
Role of Associative Charging in the Entropy–Energy Balance of Polyelectrolyte Complexes journal October 2018
Correlation between thermodynamical stabilities of metal borohydrides and cation electronegativites: First-principles calculations and experiments journal July 2006
Complex hydrides for energy storage journal March 2019
A general-purpose machine learning framework for predicting properties of inorganic materials journal August 2016
Discovery of Intermetallic Compounds from Traditional to Machine-Learning Approaches journal December 2017
The Elements of Statistical Learning book January 2009
On the heat of formation of solid alloys journal July 1975
On the heat of formation of solid alloys. II journal April 1976
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Generalized Gradient Approximation Made Simple journal October 1996
Projector augmented-wave method journal December 1994
Fully unconstrained noncollinear magnetism within the projector augmented-wave method journal November 2000
High-precision sampling for Brillouin-zone integration in metals journal August 1989
The hydrogen activation of LaNi5 journal July 1992
A new study of the structure of LaNi5D6.7 using a modified Rietveld method for the refinement of neutron powder diffraction data journal February 1987
Compounds of uranium with the transition metals of the first long period journal January 1950
Synthesis of novel deuterides in several Laves phases by using gaseous deuterium under high pressure journal October 2002
Investigation on high-pressure metal hydride hydrogen compressors journal November 2007
Materials Databases: The Need for Open, Interoperable Databases with Standardized Data and Rich Metadata journal September 2019