Journal
NANOSCALE
Volume 9, Issue 21, Pages 7207-7216Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr01224a
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Funding
- National Tsing Hua University, Taiwan [N103K30211, 103N1200K3]
- Ministry of Science and Technology, Taiwan [MOST 103-2112-M-007-022-MY3, MOST 105-3113-E-006-019-CC2]
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A ternary metallic CuPdPt nanocatalyst (NC) is synthesized using a wet chemical reduction method, which is sequentially designed, in the presence of acid treated carbon nanotubes. This NC is a nanocrystal with a configuration of a Cu@Pd core and atomic Pt clusters (similar to 9 wt%) on the top (Cu@Pd/Pt). A residual current of 92.6%, 5.2 times higher than that of commercial Pt catalysts (at 0.85 V vs. RHE), is retained after 40 000 cycles of an accelerated degradation test (ADT). Atomic and electronic structure analyses show that such exclusive stability mainly results from electron localization at Pt clusters in heterogeneous interfaces of the Cu-Pd core. Most importantly, we develop a robust ternary NC, which shows outstanding MA, superior chemical durability, and similar to 90 wt% lower Pt loading than commercial Pt NCs in the oxygen reduction reaction.
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