In this section
@article{zalitis:2017:10.1039/C7TA05543A,
author = {zalitis, C and Kucernak, ARJ and sharman, J and wright, E},
doi = {10.1039/C7TA05543A},
journal = {Journal of Materials Chemistry A},
pages = {23328--23338},
title = {Design principles for platinum nanoparticles catalysing electrochemical hydrogen evolution and oxidation reactions: edges are much more active than facets},
url = {http://dx.doi.org/10.1039/C7TA05543A},
volume = {5},
year = {2017}
}
TY - JOUR
AB - Improving the performance of hydrogen evolution and oxidation reactions using precious metal catalysts is key in reducing the cost of electrolysers and fuel cells. By considering the performance of these reactions as a function of platinum particle size (2.1–15 nm) under high mass transport conditions in acids, we find that the activity is composed of two components which vary in a defined way with the particle size. Geometrical considerations and electrokinetic modelling suggest that these two components correspond to the response of edges/vertices and the response of facets (Pt(100) and Pt(111)). Edges and vertices are much more active towards the hydrogen reaction. This assignment also rationalises the poor performance of platinum in alkaline environments. We predict that “ideal” particles made up of only edges/vertices would allow fuel cells and electrolysers to operate with only 1 μgPt cm−2 – about two to three orders of magnitude lower than what is currently used.
AU - zalitis,C
AU - Kucernak,ARJ
AU - sharman,J
AU - wright,E
DO - 10.1039/C7TA05543A
EP - 23338
PY - 2017///
SN - 2050-7496
SP - 23328
TI - Design principles for platinum nanoparticles catalysing electrochemical hydrogen evolution and oxidation reactions: edges are much more active than facets
T2 - Journal of Materials Chemistry A
UR - http://dx.doi.org/10.1039/C7TA05543A
UR - http://hdl.handle.net/10044/1/50585
VL - 5
ER -
Prof. Anthony Kucernak
G22B
Molecular Sciences Research Hub (MSRH)
Imperial College London
White City Campus
London
W12 0BZ
United Kingdom
Phone: +44 (0)20 7594 5831
Fax: +44 (0)20 7594 5804
Email: anthony@imperial.ac.uk