Title :
Enhancement of catalytic efficiency by partial replacement of ruthenium with platinum nanoparticles for direct methanol fuel cell
Author :
Chuan Chang ; Liang-You Lin ; Yi-Shiuan Wu ; Fan-Gang Tseng
Author_Institution :
Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
In this paper, an open-loop reduction system (OLRS) [1] is employed to produce the core-shell Pt (platinum)/Ru (ruthenium) catalysts on the carbon nanotube/carbon fiber supports (CNT/CF) for direct methanol fuel cell (DMFC) application. By adjusting pH value of the ionized reduction environment, Pt4+ can be first converted into Pt2+ to allow partial Ru replacement with Pt by redox transmetalation and produce Pt/Ru core-shell nano structures [2,3]. Methanol oxidation efficiency and carbon monoxide (CO) poisoning tolerance of the prepared core-shell nano catalysts can be greatly enhanced by our developed OLRS compared to conventional reflux system [4].
Keywords :
carbon compounds; carbon fibres; carbon nanotubes; catalysts; direct methanol fuel cells; nanoparticles; organic compounds; oxidation; platinum; reduction (chemical); ruthenium; CF; CNT; CO; DMFC application; OLRS; Pt-Ru; carbon fiber; carbon monoxide poisoning tolerance; carbon nanotube; catalytic efficiency; core-shell catalysts; core-shell nanocatalysts; core-shell nanostructures; direct methanol fuel cell; ionized reduction environment; methanol oxidation efficiency; open-loop reduction system; platinum nanoparticles; redox transmetalation; reflux system; ruthenium; Carbon; Carbon nanotubes; Electrodes; Methanol; Nanoparticles; Oxidation; Surface treatment;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2014 9th IEEE International Conference on
Conference_Location :
Waikiki Beach, HI
DOI :
10.1109/NEMS.2014.6908804
