Durable Pt Catalyst Using Novel Composite Support of Ordered Mesoporous Carbon and Silicon Carbide for Polymer Electrolyte Fuel Cell

2014 ◽  
Keyword(s):  
Silicon Carbide ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Polymer Electrolyte Fuel Cell ◽  
Pt Catalyst ◽  
Composite Support ◽  
Ordered Mesoporous

Development of stable electrochemical catalysts using ordered mesoporous carbon/silicon carbide nanocomposites

2015 ◽  
Vol 40 (36) ◽  
pp. 12352-12361 ◽  
Author(s):  
Dae Jong You ◽  
Xing Jin ◽  
Jin Hoe Kim ◽  
Seon-Ah Jin ◽  
Sungchul Lee ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous ◽  
Electrochemical Catalysts

scholarly journals Ordered mesoporous carbon supported bifunctional PtM (M = Ru, Fe, Mo) electrocatalysts for a fuel cell anode

2016 ◽  
Vol 37 (1) ◽  
pp. 43-53 ◽  
Author(s):  
Chin-Te Hung ◽  
Zih-Hao Liou ◽  
Pitchaimani Veerakumar ◽  
Pei-Hao Wu ◽  
Tuan-Chi Liu ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous ◽  
Cell Anode ◽  
Fuel Cell Anode

Synthesis, Characterization and Physiochemical Properties of Platinum Supported on Mesoporous Carbon

2011 ◽  
Author(s):  
Salam J. J. Titinchi ◽  
Waheed Saban ◽  
Leslie Petrik ◽  
Hanna S. Abbo
Keyword(s):  
Surface Area ◽  
Pore Volume ◽  
Mesoporous Carbon ◽  
Chemical Vapour ◽  
Nitrogen Adsorption ◽  
Ordered Mesoporous Carbon ◽  
Pt Catalyst ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ordered Mesoporous

Ordered mesoporous carbon (OMC) has been prepared by impregnating the pores of the silica template (SBA-15) with liquid petroleum gas (LPG) or sucrose. The desired support (OMC) was obtained after dissolution with NaOH. Platinum nanoparticles were dispersed on ordered mesoporous carbons using Chemical Vapour Deposition (CVD) method and Pt(acac)2 as metal source. The resulting ordered mesoporous carbon possess a large surface area with high microporosity, and a controlled pore size distribution, High-quality carbon replicas of SBA-15 show an X-ray diffraction peak at low angle, which indicates that the structural periodicity of the (111) planes has been maintained. Their pore volume and specific surface area are high and the pore volume is almost entirely microporous. The synthesized Pt/OMC was characterized by powder X-Ray diffraction, HR-TEM, HR-SEM, EDS, thermogravimetric analysis, and nitrogen adsorption. The performance of Pt catalyst supported OMC was evaluated by electrochemical studies, which shows almost similar activity to the commercial catalyst.

Preparation of Electrocatalysts for Polymer Electrolyte Fuel Cell Cathodes From Au-Pt Core-Shell Nanoparticles Synthesized by Simultaneous Aqueous-Phase Reduction

2013 ◽  
Vol 10 (4) ◽  
Author(s):  
Wataru Yamaguchi ◽  
Yutaka Tai
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Aqueous Phase ◽  
Polymer Electrolyte Fuel Cell ◽  
Pt Catalyst ◽  
Core Shell ◽  
Support Material ◽  
Shell Nanoparticles ◽  
Phase Reduction ◽  
Core Shell Nanoparticles

Electrocatalysts for polymer electrolyte fuel cell (PEFC) cathodes were prepared using Au-Pt core-shell nanoparticles. Polyvinylpyrrolidone (PVP)-protected core-shell nanoparticles were synthesized by simultaneous aqueous-phase reduction of Au and Pt, and they were deposited on carbon black support material. The catalyst powder was thermally processed in air to remove PVP, since the protecting polymers prevent nanoparticles from directly contacting the support material as well as reactant molecules. To avoid sintering during the thermal treatment, the effects of temperature and processing time on sintering were carefully examined. It was found that PVP was selectively oxidized and removed at 170 °C in air without notable damages to the other components of the catalyst. Stability of the core-shell catalyst in water was improved after the removal of PVP. The oxidation state of the Pt shell was found to be very close to zero. The thus-prepared Au-Pt core-shell catalyst for a PEFC cathode exhibited mass activity that was 20% higher than that of pure Pt catalyst.

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