Effect of Graphite Dopant on the Performance of Tubular Cathode for Direct Ethanol Fuel Cell

2011 ◽  
Vol 311-313 ◽  
pp. 2358-2361
Author(s):  
Dong Tang ◽  
Hui Min Lv ◽  
Quan Hui Hou ◽  
Huan Chen ◽  
Hong Jun Ni
Keyword(s):  
Fuel Cell ◽  
Electrical Property ◽  
Catalyst Layer ◽  
Strength Test ◽  
Raw Material ◽  
Sintering Process ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell ◽  
Advantages And Disadvantages ◽  
Cathode Tube

By using the mesocarbon microbead (MCMB) and graphite as raw material, the tubular cathode green bodies of a direct ethanol fuel cell（DEFC）are shaped by the gelcasting technology and the tubular cathode is prepared by spraying the diffusion layer and the Pt/C catalyst layer after the sintering process. Through the tubular cathode physical performance and electrical property test, the advantages and disadvantages of cathode tube performance are studied at different graphite proportion. The results showed that with the increase of graphite, the ratio porosity of cathode tube support body increases at first and then decreases. However, the density has a converse trend. While the maximum porosity of the cathode tube is more than 0.5 and the corresponding density is 0.95g/cm3. Strength test showed that the cathode tube strength is better with the graphite ratio from 0 to 40 percent and can meet the actual needs. Electrical property tests showed that the cathode tube has higher current density with the graphite ratio of 40 and 50 percent.

Investigation on Electrical Performance of Tubular Cathode for Direct Ethanol Fuel Cell

2012 ◽  
Vol 557-559 ◽  
pp. 1210-1213 ◽  
Author(s):  
Dong Tang ◽  
Hui Min Lv ◽  
Chang Yuan Li
Keyword(s):  
Fuel Cell ◽  
Raw Materials ◽  
Electrical Performance ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell ◽  
Advantages And Disadvantages ◽  
Cathode Tube ◽  
Gelcasting Process ◽  
Doping Ratio ◽  
Transmission Ability

A new tubular cathode support for Direct Ethanol Fuel Cell (DEFC) was prepared by the gelcasting process using mesocarbon microbead(MCMB) and graphite as the main raw materials. Through the tubular cathode electrical property test, the advantages and disadvantages of cathode tube performance are studied at different graphite proportion. The results showed that when the graphite is more than 30 percent, the charge transmission ability has become extremely close. When the graphite ratio is 40 and 50 percent, the electrical performance is the best. With the graphite doping ratio of 40 percent, the electrode electrochemical reaction will have been reinforced when the temperature is high. When the air flow is 100 ml/min, the electricity capacity is better.

High performance direct ethanol fuel cell with double-layered anode catalyst layer

2008 ◽  
Vol 177 (1) ◽  
pp. 142-147 ◽  
Author(s):  
Q. Wang ◽  
G.Q. Sun ◽  
L. Cao ◽  
L.H. Jiang ◽  
G.X. Wang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
High Performance ◽  
Catalyst Layer ◽  
Anode Catalyst ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell

Two-Dimensional Numerical Simulations of Tubular Cathode in a Direct Ethanol Fuel Cell

2011 ◽  
Vol 311-313 ◽  
pp. 2362-2366
Author(s):  
Dong Tang ◽  
Huan Chen ◽  
Quan Hui Hou ◽  
Hui Min Lv ◽  
Hong Jun Ni
Keyword(s):  
Fuel Cell ◽  
Diffusion Layer ◽  
Performance Optimization ◽  
Catalyst Layer ◽  
Operating Conditions ◽  
Electrochemical Kinetics ◽  
Two Dimensional ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell ◽  
Transfer Resistance

Analytical model is a valuable tool for the design process and performance optimization of fuel cell systems. In this paper, two-dimensional mathematical models of the tubular cathode in a direct ethanol fuel cell (DEFC), which include models of catalyst layer，support body, diffusion layer and gas flow, are developed to describe not only the electrochemical kinetics on the tubular cathode, but also multi-component transfer process in the tubular cathode. The model of spherical agglomerate is used in the catalyst layer, and the effect of ethanol penetration on oxygen reaction of the tubular cathode is also considered. Based on the model, Comsol Miphysics is used to simulate the concentration distribution of components and the current density distribution. Additional, the influence of diffusion layer and catalyst layer in the tubular cathode and the cell operating conditions on the performance of DEFC are analyzed. The results show that the mass transfer resistance exists in the diffusion layer, and the gas concentration decreases inside the battery. It is further showed that electrochemical reactions mainly happen in the catalyst layer, and oxygen concentration decrease rapidly at this time, while the water concentration can be increased.

The Effect of Alloying in Pt-Sn/C Electrocatalysts in the Performance of a Direct Ethanol Fuel Cell

2014 ◽  
Vol 64 (3) ◽  
pp. 1139-1145
Author(s):  
F. Colmati ◽  
R. Sousa ◽  
E. G. Ciapina ◽  
E. R. Gonzalez
Keyword(s):  
Fuel Cell ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell ◽  
Effect Of Alloying

scholarly journals Preparation and Electrocatalytic Characteristics Research of Pd/C Catalyst for Direct Ethanol Fuel Cell

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Qiao Xia Li ◽  
Ming Shuang Liu ◽  
Qun Jie Xu ◽  
Hong Min Mao
Keyword(s):  
Fuel Cell ◽  
Average Particle Size ◽  
Active Surface ◽  
Carbon Support ◽  
Catalytic Performance ◽  
Active Surface Area ◽  
Average Particle ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell ◽  
Electrochemical Active Surface Area

Two kinds of carbon-support 20% Pd/C catalysts for use in direct ethanol fuel cell (DEFC) have been prepared by an impregnation reduction method using NaBH4and NaH2PO2as reductants, respectively, in this study. The catalysts were characterized by XRD and TEM. The results show that the catalysts had been completely reduced, and the catalysts are spherical and homogeneously dispersed on carbon. The electrocatalytic activity of the catalysts was investigated by electrochemical measurements. The results indicate that the catalysts had an average particle size of 3.3 nm and showed the better catalytic performance, when NaBH4was used as the reducing agent. The electrochemical active surface area of Pd/C (NaBH4) was 56.4 m2·g−1. The electrochemical activity of the Pd/C (NaBH4) was much higher than that of Pd/C (NaH2PO2).

scholarly journals Application of a non-noble Fe-N-C catalyst for oxygen reduction reaction in an alkaline direct ethanol fuel cell

2018 ◽  
Vol 115 ◽  
pp. 226-237 ◽  
Author(s):  
Luigi Osmieri ◽  
Ricardo Escudero-Cid ◽  
Alessandro H.A. Monteverde Videla ◽  
Pilar Ocón ◽  
Stefania Specchia
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell
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