Electroless Pt Deposition on Mn3O4 Nanoparticles Via the Galvanic Replacement Process: Electrocatalytic Nanocomposite with Enhanced Performance for Oxygen Reduction Reaction

Overview

Journal ACS Nano

Publisher American Chemical Society

Specialty Biotechnology

Date 2012 May 15

PMID 22578142

Citations 7

Authors

Ki Woong Kim

Soo Min Kim

Suhee Choi

Jongwon Kim

In Su Lee

Affiliations

Soon will be listed here.

Abstract

A novel electroless Pt deposition method was exploited by employing the galvanic replacement process occurring between the Mn(3)O(4) surface and PtCl(4)(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 Mn(3)O(4) 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/Mn(3)O(4) nanocomposite showed highly enhanced specific activity and durability, compared with those of the commercial Pt/C catalyst.

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