Predicted Optimal Bifunctional Electrocatalysts for the Hydrogen Evolution Reaction and the Oxygen Evolution Reaction Using Chalcogenide Heterostructures Based on Machine Learning Analysis of in Silico Quantum Mechanics Based High Throughput Screening
Journal Article
·
· Journal of Physical Chemistry Letters
- Soochow University, Suzhou (China); OSTI
- Soochow University, Suzhou (China)
- California Institute of Technology (CalTech), Pasadena, CA (United States)
Two-dimensional van der Waals heterostructure materials, particularly transition metal dichalcogenides (TMDC), have proved to be excellent photoabsorbers for solar radiation, but performance for such electrocatalysis processes as water splitting to form H2 and O2 is not adequate. We propose that dramatically improved performance may be achieved by combining two independent TMDC while optimizing such descriptors as rotational angle, bond length, distance between layers, and the ratio of the bandgaps of two component materials. In this work we apply the least absolute shrinkage and selection operator (LASSO) process of artificial intelligence incorporating these descriptors together with quantum mechanics (density functional theory) to predict novel structures with predicted superior performance. Our predicted best system is MoTe2/WTe2 with a rotation of 300°, which is predicted to have an overpotential of 0.03 V for HER and 0.17 V for OER, dramatically improved over current electrocatalysts for water splitting.
- Research Organization:
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- Sponsoring Organization:
- National Key R&D Program of China; National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0004993
- OSTI ID:
- 1801619
- Journal Information:
- Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 3 Vol. 11; ISSN 1948-7185
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Identification of optimal solar fuel electrocatalysts via high throughput in situ optical measurements
Epitaxial Design of Complex Nickelates as Electrocatalysts for the Oxygen Evolution Reaction
Journal Article
·
Mon Oct 20 20:00:00 EDT 2014
· Journal of Materials Research
·
OSTI ID:1333883
Epitaxial Design of Complex Nickelates as Electrocatalysts for the Oxygen Evolution Reaction
Journal Article
·
Wed Apr 19 20:00:00 EDT 2023
· Advanced Energy Materials
·
OSTI ID:1971184