Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/78446
Title: Barrier-free interface electron transfer on PtFe-Fe2C janus-like nanoparticles boosts oxygen catalysis
Authors: Lai, JP
Huang, BL 
Tang, YH
Lin, F
Zhou, P
Chen, X
Sun, YJ
Lv, F
Guo, SJ
Issue Date: 2018
Publisher: Cell Press
Source: Chem, 10 May 2018, v. 4, no. 5, p. 1153-1166 How to cite?
Journal: Chem 
Abstract: Designing highly efficient interface catalysts with new interface-enhancing mechanisms for the oxygen reduction reaction (ORR) in acid solution still remains a significant challenge. Here, we report a class of stable PtFe-Fe2C Janus-like nanoparticle (NP) interface catalysts with an unrevealed barrier-free interface electron-transfer property that greatly boosts ORR catalytic activity and stability. The PtFe-Fe2C Janus-like NPs showed much higher catalytic activity for ORR than either PtFe or Fe2C NPs in both acidic and alkaline electrolytes. Density functional theory simulations revealed that a barrier-free interface electron transfer on the interface of PtFe-Fe2C Janus-like NPs is the main factor in enhancing ORR activity. This interface electron-transfer property makes them the most active for ORR among all reported PtFe-based nanocatalysts. We further demonstrate that this barrier-free interface electron-transfer property can be readily generalized to other systems, such as the hydrogen evolution reaction and H2O2 reduction electrocatalysis, to achieve better electrocatalytic enhancement.
URI: http://hdl.handle.net/10397/78446
ISSN: 2451-9294
DOI: 10.1016/j.chempr.2018.02.010
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