A silicon-based fuel cell micro power system using a microfabrication technique

Xiao, Zhiyong; Yan, Guizhen; Feng, Chunhua; Chan, P.C.H.; Hsing, I‐Ming

doi:10.1088/0960-1317/16/10/014

Cited by 23 publications

(13 citation statements)

References 36 publications

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“…Impressively, MEMs scale PEM fuel cells have been fabricated and tested for this purpose [18]. These systems integrate several components of a fuel cell power supply into a chip sized wafer, including the fuel and oxygen source.…”

Section: Pem Fuel Cell Applicationsmentioning

confidence: 99%

Degradation in PEM Fuel Cells and Mitigation Strategies Using System Design and Control

Thangavelautham¹

2018

Proton Exchange Membrane Fuel Cell

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The rapid miniaturization of electronics, sensors, and actuators has reduced the cost of field sensor networks and enabled more functionality in ever smaller packages. Networks of field sensors have emerging applications in environmental monitoring, in disaster monitoring, security, and agriculture. Batteries limit potential applications due to their low specific energy. A promising alternative is photovoltaics. Photovoltaics require large, bulky panels and are impacted by daily and seasonal variation in solar insolation that requires coupling to a backup power source. Polymer electrolyte membrane (PEM) fuel cells are a promising alternative, because they are clean, quiet, and operate at high efficiencies. However, challenges remain in achieving long lives due to catalyst degradation and hydrogen storage. In this chapter, we present a design framework for high-energy fuel cell power supplies applied to field sensor networks. The aim is to achieve long operational lives by controlling degradation and utilizing high-energy density fuels such as lithium hydride to produce hydrogen. Lithium hydride in combination with fuel-cell wastewater or ambient humidity can achieve fuel specific energy of 5000 Wh/kg. The results of the study show that the PEM hybrid system fueled using lithium hydride offers a three-to fivefold reduction in mass compared to state-of-the-art batteries.

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Section: Pem Fuel Cell Applicationsmentioning

confidence: 99%

Degradation in PEM Fuel Cells and Mitigation Strategies Using System Design and Control

Thangavelautham¹

2018

Proton Exchange Membrane Fuel Cell

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“…Using silicon for the microfabrication of MFCs has two advantages: readily available mature microfabrication techniques, and the integration of the device with the rest of the microelectronic circuitry [2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…To achieve this result, numerous deposition steps of various thin films, in addition to the MWCNT growth, were required. Xiao et al [4] use lithographically defined 20 μm tall pillars etched in silicon, as a GDL, while Aravamudhan et al [5] and Lee et al [7] produced an array of holes in a silicon wafer, functioning as a macroporous diffusion layer. A similar kind of macroporous layer was implemented by Zhang, Advani et al [10] as an array of holes in a copper layer.…”

Section: Introductionmentioning

confidence: 99%

Integration of carbon felt gas diffusion layers in silicon micro fuel cells

Scotti¹,

Kanninen²,

Kallio³

et al. 2012

J. Micromech. Microeng.

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Abstract:We have integrated carbon felt, a traditional fuel cell gas diffusion layer, with silicon micro fuel cells. To this end we used two silicon microfabrication procedures using reactive ion etching: formation of black silicon and sinking of flowfield. The former decreases electrical contact resistance to the diffusion layer, the latter serves to contain the reactant gases. The micro fuel cells, where the flowfield was covered by black silicon nano-needles, showed better performance (127 mW cm -2 ) compared to the same cells without black silicon (114 mW cm -2 ). The black silicon fuel cells were also more stable during an overnight chronoamperometric measurement.

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“…As a leading candidate power source for portable devices, direct methanol fuel cell (DMFC), especially micro-DMFC (DMFC), has drawn increasing attention recently due to its high energy density, easy recharging, low pollution and room temperature operation [1][2][3][4]. Most of the previous researches have focused on design and fabrication of DMFC to improve the performance.…”

Section: Introductionmentioning

confidence: 99%