Vidvuds Ozolins
Yale University
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Publication
Featured researches published by Vidvuds Ozolins.
Nature Communications | 2017
S. Shahab Naghavi; Antoine Emery; Heine Anton Hansen; Fei Zhou; Vidvuds Ozolins; C. Wolverton
Previous studies have shown that a large solid-state entropy of reduction increases the thermodynamic efficiency of metal oxides, such as ceria, for two-step thermochemical water splitting cycles. In this context, the configurational entropy arising from oxygen off-stoichiometry in the oxide, has been the focus of most previous work. Here we report a different source of entropy, the onsite electronic configurational entropy, arising from coupling between orbital and spin angular momenta in lanthanide f orbitals. We find that onsite electronic configurational entropy is sizable in all lanthanides, and reaches a maximum value of ≈4.7 kB per oxygen vacancy for Ce4+/Ce3+ reduction. This unique and large positive entropy source in ceria explains its excellent performance for high-temperature catalytic redox reactions such as water splitting. Our calculations also show that terbium dioxide has a high electronic entropy and thus could also be a potential candidate for solar thermochemical reactions.Solid-state entropy of reduction increases the thermodynamic efficiency of ceria for two-step thermochemical water splitting. Here, the authors report a large and different source of entropy, the onsite electronic configurational entropy arising from coupling between orbital and spin angular momenta in f orbitals.
ACS Applied Nano Materials | 2018
Eric P. Young; Junsoo Park; Tingyu Bai; Christopher S. Choi; Ryan H. DeBlock; Mike Lange; Sumiko Poust; Jesse Tice; Clincy Cheung; Bruce S. Dunn; M. S. Goorsky; Vidvuds Ozolins; Dwight C. Streit; Vincent Gambin
Archive | 2011
Fei Zhou; Yongduo Liu; Mark Asta; Vidvuds Ozolins
Archive | 2010
Yongsheng Zhang; C. Wolverton; Eric H. Majzoub; Vidvuds Ozolins
Archive | 2004
Mark Asta; Emmanuelle A. Marquis; David N. Seidman; C. Woodward; Vidvuds Ozolins
Archive | 2004
C. Wolverton; Vidvuds Ozolins; Mark Asta
Archive | 2000
Vidvuds Ozolins; Mark Asta; C. Wolverton
Journal Name: Journal of Physics: Condensed Matter; Other Information: Submitted to Journal of Physics: Condensed Matter; (23 Nov 1999) | 1999
W. Wolverton; Vidvuds Ozolins; Alex Zunger
Archive | 1998
Vidvuds Ozolins; Alex Zunger
Archive | 1998
Luiz G. Ferreira; Vidvuds Ozolins; Alex Zunger