Abstract
Platinum acetylacetonate (Pt(acac)2) and copper acetylacetonate (Cu(acac)2) were co-reduced to prepare PtCu2 octahedron alloy catalyst in N,N-dimethylformamiade by solvothermal method. The PtCu2 showed lattice compression, and high ratio of non-oxidized Pt with high electronic binding energy. All those structural features contributed to weak adsorption strength of oxygen species on Pt and lower d-band centre position. The influence of structure-directing agent on morphology of PtCu alloy was systematically studied. In the half cell test, as a result of the uniform morphology and regular octahedron of PtCu2 formed, the mass activity and area specific activity of PtCu2/C reached 6.2 and 27.2 times, respectively, relative to those of Pt/C at 0.9 V vs. RHE. Furthermore, after the accelarated degradation test, the mass activity of PtCu2/C still reached 4.5 times compared to that of Pt/C.
Graphical Abstract
Keywords
fuel cells, oxygen reduction, PtCu, octahedron
Publication Date
2018-12-28
Online Available Date
2018-11-30
Revised Date
2018-10-08
Received Date
2018-09-17
Recommended Citation
Long-sheng CAO, Lei WAN, Zhi-gang SHAO, Hong-mei YU, Ming HOU, Bao-lian YI.
Morphological Control of PtCu2 Octahedron and Oxygen Reduction Electrocatalytic Performance of PtCu for Fuel Cell[J]. Journal of Electrochemistry,
2018
,
24(6): 697-706.
DOI: 10.13208/j.electrochem.180848
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol24/iss6/11
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