Micro direct methanol fuel cells and their stacks using a polymer electrolyte sandwiched by multi-window microcolumn electrodes

Seo, Young Ho; Cho, Young-Ho

doi:10.1016/j.sna.2008.12.009

Cited by 15 publications

(7 citation statements)

References 13 publications

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“…A similar concept for μ-DMFCs was also presented by Y.H. Seo et al [8], and a maximum power density of 0.07 mW/cm 2 was reported in their research.…”

Section: Introductionsupporting

confidence: 73%

High efficient μ-PEMFCs by integrating micro/nano scaled performance improving components

Peng

Wang

et al. 2012

2012 IEEE 25th International Conference on Micro Electro Mechanical Systems (MEMS)

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A silicon-based and fully integrated micro-proton exchange membrane fuel cell (μ-PEMFC) which carries out high efficient catalyst utilization and outstanding cell performance is introduced in this paper. The novel design involves the integration of micro-and nano-structures that leads to higher reaction rate due to larger surface areas, reduced impedance of fuel diffusion due to micro-patterned reaction chamber that creates extra three-phase zones, and improved interfacial strength and reduced ohmic impedance due to micro-interlocks of a single cell. The best performance in the current study is 26 mW/cm 2 with only 0.69 mg/cm 2 of Pt catalyst, and it is superior to the present micro-fuel cells after normalizing Pt loading.

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“…A similar concept for μ-DMFCs was also presented by Y.H. Seo et al [8], and a maximum power density of 0.07 mW/cm 2 was reported in their research.…”

Section: Introductionsupporting

confidence: 73%

High efficient μ-PEMFCs by integrating micro/nano scaled performance improving components

Peng

Wang

et al. 2012

2012 IEEE 25th International Conference on Micro Electro Mechanical Systems (MEMS)

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“…, Jankowski et al . , or more recently Zhu et al , Seo and Cho and Lee et al mixed alkaline etching and consecutive DRIE to perform through holes on a silicon surface (on a silicon on insulator substrate for Zhu et al ).…”

Section: Comparison With Other Technologiesmentioning

confidence: 99%

Integration of porous silicon in microfuel cells: a review

Gautier

Kouassi

2014

Int. J. Energy Res.

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SUMMARY In this review, a particular emphasis is put on the integration of porous silicon in microfuel cells. After a general description of porous silicon morphologies and etching principles, we describe microfuel cell working and requirements. Then, among silicon‐based miniaturized fuel cells, we will show how porous silicon has arisen as a promising material to perform simultaneously many functions necessary to the core fuel cell such as bipolar plate, gas diffusion layer, catalyst support, or membrane. The performances of several devices reported in the literature are also discussed. Thereafter, a state of the art of other materials used in fuel cell miniaturization to perform bipolar plates or gas diffusion layers is given in order to make a comparison with porous silicon‐based technologies. Copyright © 2014 John Wiley & Sons, Ltd.

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“…When an Au-Zn electrode pair is filled with a mixture of sulfuric acid (H 2 SO 4 ) and hydrogen peroxide (H 2 O 2 ), the anodic potential at the Zn electrode is estimated as -0.76 V from equation (1) and the cathodic potential at the Au electrode is 1.76 V from equation (2). Thus, the voltage of the unit cells becomes 2.52 V from equation (3).…”

Section: Layout and Working Principlementioning

confidence: 99%

“…Since the maximum voltage generated by a unit cell of lithium-ion batteries [2] is 3.6 V, it is necessary to stack unit cells in a serial format for high-voltage generation. However, the previous stacked power sources [3,4] in microscales have the problem of long electrolyte charging time.…”

Section: Introductionmentioning

confidence: 99%

High-voltage liquid-electrolyte microbatteries composed of serial unit cells defined by the surface-tension effect

Kim¹,

Cho

2008

J. Micromech. Microeng.

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We present high-voltage liquid-electrolyte microbatteries, inspired by the high-voltage generation mechanism of electric eels using serially connected unit cells. Compared to the previous stacked micropower sources, the present microbatteries achieve easy liquid-electrolyte filling with reduced charging time. In order to isolate each cell, we purge air into the liquid electrolyte filled in a channel layer, with three types of surface-tension valves (cell-front, outlet and cell-end valves). We design and characterize four different prototypes of microbatteries: C1, C10, C20 and C40, composed of the serial interconnection of 1, 10, 20 and 40 unit cells, respectively. In the experimental study, we measure threshold pressures of the three surface tension valves of cell-front, outlet and cell-end valves as 460 ± 47, 1000 ± 53 and 2800 ± 170 Pa, respectively. The average charging time of C40 has been measured as 26.8 ± 4.9 s where the electrolyte and air flow rates are 100 and 200 μl min −1 , respectively. The prototypes of the microbattery C40 show a maximum voltage of 12 V, a maximum power density of 110 μW cm −2 and a maximum power capacity of 2.1 μAh cm −2 . The present microbatteries have the potential for application in high-voltage portable power sources.

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Micro direct methanol fuel cells and their stacks using a polymer electrolyte sandwiched by multi-window microcolumn electrodes

Cited by 15 publications

References 13 publications

High efficient μ-PEMFCs by integrating micro/nano scaled performance improving components

High efficient μ-PEMFCs by integrating micro/nano scaled performance improving components

Integration of porous silicon in microfuel cells: a review

High-voltage liquid-electrolyte microbatteries composed of serial unit cells defined by the surface-tension effect

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Micro direct methanol fuel cells and their stacks using a polymer electrolyte sandwiched by multi-window microcolumn electrodes

Cited by 15 publications

References 13 publications

High efficient &#x03BC;-PEMFCs by integrating micro/nano scaled performance improving components

High efficient &#x03BC;-PEMFCs by integrating micro/nano scaled performance improving components

Integration of porous silicon in microfuel cells: a review

High-voltage liquid-electrolyte microbatteries composed of serial unit cells defined by the surface-tension effect

Contact Info

Product

Resources

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High efficient μ-PEMFCs by integrating micro/nano scaled performance improving components

High efficient μ-PEMFCs by integrating micro/nano scaled performance improving components