Effect of operation parameters on performance of micro direct methanol fuel cell fabricated on printed circuit board

Lim, Sangwoo; Kim, Seung Wan; Kim, Hyun Jong; Ahn, Ji Eun; Han, Hye Sung; Shul, Yong Gun

doi:10.1016/j.jpowsour.2006.03.091

Cited by 33 publications

(12 citation statements)

References 12 publications

(12 reference statements)

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“…A research group at Yonsei University, Korea, developed a DMFC on printed circuit board (PCB) substrates by means of a photolithography process [195]. The effects of the channel pattern, channel width and methanol flow rate on the performance of the fabricated DMFC were evaluated over a range of flow-channel widths from 200 to 400 mm and flow rates of methanol from 2 to 80 ml min À1 .…”

Section: Portable Power Sourcesmentioning

confidence: 99%

Direct Methanol Fuel Cells: History, Status and Perspectives

Aricò

Baglio

Antonucci

2009

Electrocatalysis of Direct Methanol Fuel Cells

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Section: Portable Power Sourcesmentioning

confidence: 99%

Direct Methanol Fuel Cells: History, Status and Perspectives

Aricò

Baglio

Antonucci

2009

Electrocatalysis of Direct Methanol Fuel Cells

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“…Significant efforts are presently devoted to develop new concepts of DMFC stacks [17,18,[21][22][23][24] in order to miniaturise the device; yet, less attention is focused on the optimisation of electrode structures for a suitable mass transport of reactants and to favour methanol tolerance at the cathode in a passive mode stack [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

AC‐Impedance Investigation of Different MEA Configurations for Passive‐Mode DMFC Mini‐Stack Applications

Baglio¹,

Stassi²,

Matera³

et al. 2010

Fuel Cells

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Membrane‐electrode assemblies (MEAs) characterised by different hydrophobic–hydrophilic properties were investigated in a passive Direct methanol fuel cell (DMFC) monopolar mini‐stack at room temperature. These properties were modulated by varying the amount of Nafion or replacing the ionomer in the catalytic layer with polytetrafluoroethylene (PTFE). Impedance spectroscopy provided valuable information with respect to the limiting processes occurring during fuel cell operation. Methanol crossover, especially in the presence of high methanol concentration, played a major role in determining the overall performance. The development of a methanol impermeable membrane appears crucial for increasing the performance of DMFC devices for portable applications.

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“…However, it is more difficult for high throughput screening of catalyst samples in practical fuel cells than that in a half cell, because it is not easy to generate a large member fuel cell array. There are a few reports of generating small fuel cell arrays [76][77][78][79][80][81] for high throughput screening of fuel cell catalysts.…”

Section: Combinatorial Methods For Dmfc Evaluation and Data Analysismentioning

confidence: 99%

Combinatorial and High Throughput Screening of DMFC Electrocatalysts

Jiang

Chu

2009

Electrocatalysis of Direct Methanol Fuel Cells

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Portable power sources play an important role in our daily life due to the increasing needs of using various power consuming electronics such as notebook computers, cell phones and digital cameras. Currently, the most widely used portable power sources are batteries. The high cost and low energy density of batteries are far behind our demands for power requirement. Even for the state-of-the-art battery, such as lithium ion battery, the energy density is less than 180 Wh/Kg. Innovative power sources are urgently needed to be an alternative to batteries. In recent years, fuel cells have attracted much attention, as they can directly convert the chemical energy of fuel to electric energy through electrochemical reactions. A fuel cell consists of an anode, a cathode, and an electrolyte membrane between the anode and the cathode. The most common type of fuel cell is polymer electrolyte membrane (PEM) fuel cell, which uses hydrogen or alcohol as fuel. Direct methanol fuel cells (DMFCs) directly uses methanol as fuel. Because of the high theoretical fuel energy density (6081 Wh/kg), and the ease of storage and transport of the liquid fuel, DMFC has become one of the more promising energy conversion sources for portable applications. People began to study direct use of methanol to generate electricity by a fuel cell early in 1960s [1][2][3][4]. However, the research on DMFC was relatively slow during the first 30 years [5-10] due to two main technical barriers: slow catalytic kinetic rates for methanol oxidation at the anode and oxygen reduction at the cathode; as well as methanol crossover from the anode to the cathode through the electrolyte membrane. Methanol crossover causes not only fuel waste, but also cathode electrode depolarization. The application of Nafion perfluorosulfonic acid as a solid polymeric electrolyte membrane has largely blocked the methanol crossover in comparison to using liquid electrolyte [11][12][13][14][15].Much effort has been made in seeking electrode catalysts. Various non-platinum catalysts, such as metallo-porphyrins and metallo-phthalocyanines [16][17][18][19] were investigated for catalytic reduction of oxygen. For example, Anson and Collman et al. [20,21] have synthesized and studied dimeric cofacial cobalt porphyrins, which

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Effect of operation parameters on performance of micro direct methanol fuel cell fabricated on printed circuit board

Cited by 33 publications

References 12 publications

Direct Methanol Fuel Cells: History, Status and Perspectives

Direct Methanol Fuel Cells: History, Status and Perspectives

AC‐Impedance Investigation of Different MEA Configurations for Passive‐Mode DMFC Mini‐Stack Applications

Combinatorial and High Throughput Screening of DMFC Electrocatalysts

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