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RSS FeedsMolecules, Vol. 26, Pages 6362: Applying Active Learning to the Screening of Molecular Oxygen Evolution Catalysts (Molecules)

 
 

21 october 2021 12:37:28

 
Molecules, Vol. 26, Pages 6362: Applying Active Learning to the Screening of Molecular Oxygen Evolution Catalysts (Molecules)
 


The oxygen evolution reaction (OER) can enable green hydrogen production; however, the state-of-the-art catalysts for this reaction are composed of prohibitively expensive materials. In addition, cheap catalysts have associated overpotentials that render the reaction inefficient. This impels the search to discover novel catalysts for this reaction computationally. In this communication, we present machine learning algorithms to enhance the hypothetical screening of molecular OER catalysts. By predicting calculated binding energies using Gaussian process regression (GPR) models and applying active learning schemes, we provide evidence that our algorithm can improve computational efficiency by guiding simulations towards candidates with promising OER descriptor values. Furthermore, we derive an acquisition function that, when maximized, can identify catalysts that can exhibit theoretical overpotentials that circumvent the constraints imposed by linear scaling relations by attempting to enforce a specific mechanism. Finally, we provide a brief perspective on the appropriate sets of molecules to consider when screening complexes that could be stable and active for this reaction.


 
60 viewsCategory: Biochemistry, Chemistry, Molecular Biology
 
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