Diamond Publications - Search Results

Search Again...

These results include publications that have not yet been reviewed and processed by Diamond Light Source. To view only processed publications click here.

You can use the folder icon under Actions to collate papers as required. You can then click on View Folder in the left-hand navigation to review and/or download your folder.

One item found (0 items not approved).

Instruments / Technical Area	Publication Details	Published	Actions
B18-Core EXAFS	Phosphate Ion Functionalization of Perovskites Surfaces for Enhanced Oxygen Evolution Reaction Chunzhen Yang , Christel Laberty-robert , Dmitry Batuk , Giannantonio Cibin , Alan Chadwick , Vanessa Pereira Pimenta , Wei Yin , Leiting Zhang , Jean-marie Tarascon , Alexis Grimaud The Journal Of Physical Chemistry Letters DOI: 10.1021/acs.jpclett.7b01504 Diamond Proposal Number(s): [12559] Show Abstract ▼ Abstract: Recent findings revealed that surface oxygen can participate in the oxygen evolution reaction (OER) for the most active catalysts, which eventually triggers a new mechanism for which the deprotonation of surface intermediates limits the OER activity. We propose in this work a “dual strategy”, for which tuning the electronic properties of the oxide such as La1-xSrxCoO3–δ can be dissociated from the use of surface functionalization with phosphate ion groups (Pi) that enhances the interfacial proton transfer. Results show that the Pi functionalized La0.5Sr0.5CoO3–δ gives rise to a significant enhancement of the OER activity when compared to La0.5Sr0.5CoO3–δ and LaCoO3. We further demonstrate that the Pi surface functionalization selectivity enhances the activity when the OER kinetics is limited by the proton transfer. Finally, this work suggests that tuning the catalytic activity by such a “dual approach” may be a new and largely unexplored avenue for the design of novel high-performance catalysts.	Jul 2017

Instruments / Technical Area

Publication Details

Published

Actions

B18-Core EXAFS

Phosphate Ion Functionalization of Perovskites Surfaces for Enhanced Oxygen Evolution Reaction

Chunzhen Yang , Christel Laberty-robert , Dmitry Batuk , Giannantonio Cibin , Alan Chadwick , Vanessa Pereira Pimenta , Wei Yin , Leiting Zhang , Jean-marie Tarascon , Alexis Grimaud

The Journal Of Physical Chemistry Letters

DOI: 10.1021/acs.jpclett.7b01504

Diamond Proposal Number(s): [12559]

Show Abstract ▼

Jul 2017