Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 4, 2017
Previous Article Next Article

Direct observation of enhanced water and carbon dioxide reactivity on multivalent metal oxides and their composites

Author affiliations

Abstract

Electrochemical gas–solid reactions are important for many energy technologies, involving partial pressure dependent surface catalysis and bulk conduction phenomenon unresolvable using conventional techniques. We report for the first time water and CO2 reactivity on perovskites, fluorites, and their composites across a wide temperature- oxygen partial pressure (pO2) range by in situ gas phase isotopic oxygen exchange, demonstrating that multivalent metal oxides actively “breathe” oxygen from these gasses. We reveal the importance of cation oxidation state and the roles of electronic, ionic, and mixed conductor phases, as well as their composites. Moreover, we show that an ionic and electronic conducting oxide composite dramatically modifies the kinetics of oxygen exchange as compared to these materials individually or as compared to the effect of creating a composite from two mixed conducting oxides.

Graphical abstract: Direct observation of enhanced water and carbon dioxide reactivity on multivalent metal oxides and their composites

Back to tab navigation

Supplementary files

Article information


Submitted
07 Feb 2017
Accepted
23 Mar 2017
First published
23 Mar 2017

Energy Environ. Sci., 2017,10, 919-923
Article type
Communication

Direct observation of enhanced water and carbon dioxide reactivity on multivalent metal oxides and their composites

Y. Huang, C. Pellegrinelli, A. Geller, S. Liou, A. Jarry, L. Wang, Y. Yu, H. Bluhm, E. J. Crumlin, K. J. Gaskell, B. W. Eichhorn and E. D. Wachsman, Energy Environ. Sci., 2017, 10, 919
DOI: 10.1039/C7EE00363C

Social activity

Search articles by author

Spotlight

Advertisements