Journal
ACS NANO
Volume 6, Issue 6, Pages 5122-5129Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn300782m
Keywords
nanoparticles; manganese; platinum; electroless deposition; electrocatalysis
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Funding
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2011-0017377, 2010-0004126]
- National Research Foundation of Korea [2010-0004126, 2011-0017377] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A novel electroless Pt deposition method was exploited by employing the galvanic replacement process occurring between the Mn3O4 surface and PtCl4(2-) complexes. The newly discovered process provides a simple protocol to produce the catalytic nanocomposite, in which a high density of ultrafine Pt nanocrystals is stably immobilized in a homogeneously dispersive state on the surface of Mn3O4 nanoparticles. When the eletrocatalytic activity was tested for the oxygen reduction reaction, which limits the rate of the overall process in proton-exchange membrane fuel cells, the resulting Pt/Mn3O4 nanocomposite showed highly enhanced specific activity and durability, compared with those of the commercial Pt/C catalyst.
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