Three-dimensional crumpled graphene-based platinum–gold alloy nanoparticle composites as superior electrocatalysts for direct methanol fuel cells

Carbon ◽  
2015 ◽  
Vol 93 ◽  
pp. 869-877 ◽  
Author(s):  
Hee Dong Jang ◽  
Sun Kyung Kim ◽  
Hankwon Chang ◽  
Ji-Hyuk Choi ◽  
Bong-Gyoo Cho ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Gold Alloy ◽  
Three Dimensional ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Nanoparticle Composites ◽  
Crumpled Graphene

A Three-Dimensional Transient Model of Two-Phase Mass Transfer in Anode Side of Passive Direct Methanol Fuel Cells

2011 ◽  
Vol 233-235 ◽  
pp. 2615-2618 ◽  
Author(s):  
Yue Ping Chen ◽  
Hang Guo ◽  
Fang Ye ◽  
Chong Fang Ma
Keyword(s):  
Mass Transfer ◽  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Three Dimensional ◽  
Anode Side ◽  
Two Phase ◽  
Mass Transfer Limitation ◽  
Drift Flux Model ◽  
Direct Methanol ◽  
Methanol Fuel Cells

A three-dimensional, two-phase, multiple-component, unsteady model for the anode side of passive direct methanol fuel cells is presented in this work. The model is formed by a drift-flux model and can capture in-plane distributions of species along different directions in the cell. After grid independency test, this model is used to investigate numerically transport behaviors in the anode of liquid feed direct methanol fuel cells. The results illustrate the feasibility of the passively delivering methanol to the electrochemical reaction site, and characterize the relevant transport phenomena. Moreover, the evolution of species concentration, velocities along different directions in the cell and the mass transfer limitation were also presented. The three-dimensional model is valuable for understanding and predicting mass transfer in passive direct methanol fuel cells.

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