Fabrication of a micro DMFCs array made of photosensitive glass

Ito, Takeshi; Kunimatsu, Masayuki

doi:10.1016/j.elecom.2005.10.032

Cited by 27 publications

(15 citation statements)

References 7 publications

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“…Kuhnke et al, and Ito and Kunimatsu studied how to fabricate an alternative form of electrode using glassy carbon, a material which exhibits a high electrical conductivity and chemical inertness [31,32]. Ito and Kunimatsu utilized micro-machining technologies to come up with a novel design for their passive-type fuel cell [32]. To achieve a high voltage, the micro-DMFCs are integrated on a single photosensitive glass substrate containing a micro-holes array.…”

Section: Micro-dmfc Design Using Mems Technologymentioning

confidence: 99%

Overview on the challenges and developments of micro-direct methanol fuel cells (DMFC)

Kamarudin

Daud

et al. 2007

Journal of Power Sources

361

164

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Section: Micro-dmfc Design Using Mems Technologymentioning

confidence: 99%

Overview on the challenges and developments of micro-direct methanol fuel cells (DMFC)

Kamarudin

Daud

et al. 2007

Journal of Power Sources

361

164

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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%

“…The small fuel cell array can be used for very precise screening of libraries of DMFC catalysts. Ito et al [78,79] fabricated a micro DMFC array containing 10 single cells, which were arranged in the micro holes (0.5 mm in diameter) on a flexible polymer substrate. The DMFC array, in which the cells are linked in series, has open circuit voltage 5.6 V; and the average cell power density is 3 mWcm À2 .…”

Section: Micro Fuel Cell Arraymentioning

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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“…In recent years microfluidic fuel cells devices have been considered by the scientific community as particularly important in the context of the next generation for on-chip power sources applications [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%