scholarly journals A High-Performance Direct Methanol Fuel Cell Technology Enabled by Mediating High-Concentration Methanol through a Graphene Aerogel

Small Methods ◽  
2018 ◽  
Vol 2 (10) ◽  
pp. 1800138 ◽  
Author(s):  
Xiaoteng Liu ◽  
Jiabin Xi ◽  
Ben Bin Xu ◽  
Bo Fang ◽  
Yucheng Wang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
High Performance ◽  
High Concentration ◽  
Graphene Aerogel ◽  
Cell Technology ◽  
Fuel Cell Technology ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Current Status of Direct Methanol Fuel-Cell Technology

2016 ◽  
pp. 155-190
Author(s):  
Drew C. Dunwoody ◽  
Hachull Chung ◽  
Luke Haverhals ◽  
Johna Leddy
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Current Status ◽  
Cell Technology ◽  
Fuel Cell Technology ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Study on a Vapor-Feed Air-Breathing Direct Methanol Fuel Cell Assisted by a Catalytic Combustor

2015 ◽  
Vol 12 (1) ◽  
Author(s):  
Wei Yuan ◽  
Hong-Rong Xia ◽  
Jin-Yi Hu ◽  
Zhao-Chun Zhang ◽  
Yong Tang
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Cell Performance ◽  
Catalyst Loading ◽  
High Concentration ◽  
Methanol Vapor ◽  
Air Breathing ◽  
Direct Methanol ◽  
Catalytic Combustor ◽  
Methanol Fuel Cell

Feeding vaporized methanol to the direct methanol fuel cell (DMFC) helps reduce the effects of methanol crossover (MCO) and facilitates the use of high-concentration or neat methanol so as to enhance the energy density of the fuel cell system. This paper reports a novel system design coupling a catalytic combustor with a vapor-feed air-breathing DMFC. The combustor functions as an assistant heat provider to help transform the liquid methanol into vapor phase. The feasibility of this method is experimentally validated. Compared with the traditional electric heating mode, the operation based on this catalytic combustor results in a higher cell performance. Results indicate that the values of methanol concentration and methanol vapor chamber (MVC) temperature both have direct effects on the cell performance, which should be well optimized. As for the operation of the catalytic combustor, it is necessary to optimize the number of capillary wicks and also catalyst loading. In order to fast trigger the combustion reaction, an optimal oxygen feed rate (OFR) must be used. The required amount of oxygen to sustain the reaction can be far lower than that for methanol ignition in the starting stage.

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