A polymer-coated carbon black-based fuel cell electrocatalyst with high CO-tolerance and durability in direct methanol oxidation

2014 ◽  
Vol 2 (44) ◽  
pp. 18875-18880 ◽  
Author(s):  
Zehui Yang ◽  
Mohamed R. Berber ◽  
Naotoshi Nakashima
ChemCatChem ◽  
2015 ◽  
Vol 7 (5) ◽  
pp. 808-813 ◽  
Author(s):  
Zehui Yang ◽  
Inas H. Hafez ◽  
Mohamed R. Berber ◽  
Naotoshi Nakashima

2016 ◽  
Vol 199 ◽  
pp. 210-217 ◽  
Author(s):  
Pasha Majidi ◽  
Rakan M. Altarawneh ◽  
Nicholas D.W. Ryan ◽  
Peter G. Pickup

2011 ◽  
Vol 65 (21-22) ◽  
pp. 3281-3284 ◽  
Author(s):  
Seok Hee Lee ◽  
Nitul Kakati ◽  
Seung Hyun Jee ◽  
Jatindranath Maiti ◽  
Young-Soo Yoon

2011 ◽  
Vol 287-290 ◽  
pp. 1369-1374 ◽  
Author(s):  
Jian Feng Ju ◽  
Dong Hui Wu ◽  
Yu Jun Shi

The PtRu-SiO2-TiO2/C anode electrocatalyst ( loading 10wt% PtRu ) of direct methanol fuel cell is prepared by the surface reductive deposition method, using Vulcan XC-72 carbon black coated with nanometer SiO2-TiO2 (SiO2-TiO2/C) as the isotopic carrier. The surface characteristics of nanometer SiO2-TiO2 is studied through nitrogen adsorption, which shows that it is of porous structure together with large surface area, that is benefit to enhance the activity of SiO2-TiO2 and the dispersion of PtRu nanoparticle on the carrier of SiO2-TiO2/C. X-ray diffraction( XRD ) and transmission electron microscopy( TEM ) are used to characterize the catalyst. The PtRu nanoparticle homodisperse in SiO2-TiO2/C carrier with diameter around 2.4 nm. Cyclic voltammograms and chronoamperograms are conducted to compare the electrochemical methanol oxidation activity of the PtRu-SiO2-TiO2/C catalyst with the commercial PuRu/C catalyst ( 20 wt% of PtRu ). The results show that PtRu-SiO2-TiO2/C has higher catalytic activity and anti-poisoning ability for methanol oxidation, the addition of porous SiO2-TiO2 can replace the PtRu to some extent, comparing with the commercial PuRu/C catalyst, not only the loading of PtRu has been cut down 50%, but also the electro-oxidizing activity of methanol improved. The electro-oxidizing mechanism is basically analyzed.


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