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A novel electroless Pt deposition method was exploited by employing the galvanic replacement process occurring between the Mn3O4 surface and PtCl42– 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.
| Authors: | Ki Woong Kim; Soo Min Kim; Suhee Choi; Jongwon Kim; In Su Lee | |
| Journal: | ACS Nano | |
| Year: | 2012 | |
| DOI: | 10.1021/nn300782m | |
| Publication date: | 11-05-2012 |
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