Planar array stack design aided by rapid prototyping in development of air-breathing PEMFC

Chen, Chen-Yu; Lai, Wen‐Hsiang; Weng, Biing-Jyh; Chuang, Huey Jan; Hsieh, Ching Yuan; Kung, Chien Chih

doi:10.1016/j.jpowsour.2007.12.080

Cited by 29 publications

(13 citation statements)

References 12 publications

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“…Prior experimental studies have investigated a number of design issues like dead-end hydrogen mode [6]; micro-flow channels [7]; plastic flow plates [8], anode current collector [9], and cathode open area [10][11][12] in order to ameliorate the performance and minimise the manufacturing cost of AB-PEMFC. Several numerical models were also developed to identify the optimum cell configurations and operating conditions [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The formation of water droplets in an air-breathing PEMFC

Ous

Arcoumanis

2009

International Journal of Hydrogen Energy

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This is the accepted version of the paper.This version of the publication may differ from the final published version. To be submitted to the Permanent repository link International Journal of Hydrogen 2009Abstract Air-Breathing Proton Exchange Membrane Fuel Cells (AB-PEMFC) have the potential to supersede lithium ion batteries in portable electronics. However, their water management issue has yet to be resolved to ensure optimum cell performance and safe system operation. In this paper, the formation of water droplets and their aggregation in the cathode flow channels of an operating AB-PEMFC is investigated by direct visualisation under various operating conditions. The developed optical set-up enables observation of droplet formation on the surface of the membrane from the top and side view of the channels simultaneously. The two orthogonal views reveal that during formation the receding and advancing droplet contact angles are almost identical with values that increase, in a similar trend to the droplet height, with increasing droplet diameter. Water films were able to develop and maintain direct contact with the side-wall of the channels even under the effect of gravitational force. The aggregation of water droplets in the channels was strongly influenced by the change in the air and hydrogen stiochiometry conditions. However, these operating parameters appear to have no significant effect on the water extraction from the channels contrary to load and temperature, where temperature has proved to be the most effective water removal mechanism with minimum reduction in the current density of AB-PEMFC.

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Section: Introductionmentioning

confidence: 99%

The formation of water droplets in an air-breathing PEMFC

Ous

Arcoumanis

2009

International Journal of Hydrogen Energy

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“…Besides, Table also shows that certain fuel cell components can be fabricated using more than one AM technology. For example, flow field plates can be fabricated by both fused deposition modeling (FDM) from material extrusion and selected laser sintering (SLS) from powder bed fusion (PBF) , .…”

Section: Additive Manufacturing Technologies For Fuel Cell Applicationmentioning

confidence: 99%

“…Additionally, AM is able to reduce the lead time in adopting a “fail fast, fail often” strategy and reduce cost and waste production as it fabricates necessary parts only. AM has already shown great potential in manufacturing the unique bespoke design of energy conversion devices, which is limited in the traditional method , .…”

Section: Introductionmentioning

confidence: 99%

Accelerating Fuel Cell Development with Additive Manufacturing Technologies: State of the Art, Opportunities and Challenges

et al. 2019

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In recent years, the use of additive manufacturing (AM) has been demonstrated in the fabrication of components in polymer electrolyte membrane fuel cell, solid oxide fuel cell (SOFC), microbial fuel cell (MFC) and laminar flow-based fuel cell (LFFC). Various AM technologies have been successfully demonstrated in fuel cell manufacturing include material extrusion, powder bed fusion, vat photopolymerization and binder jetting. One of the unique advantages of AM is the ability to handle sophisticated design with features ranging from macro to micro scales, which are inaccessible by conventional manufacturing technologies. Well-designed complex 3D structures were reported to have the potential for increasing the performance of fuel cells. Therefore, AM presents itself as a promising fabrication method to promote the development of fuel cells. Besides, AM also showed its specialty in time-saving, flexibility, and on-demand manufacturability in the fabrication of fuel cell components. In spite of the prospects of AM in fuel cells, more studies and researches are required to overcome challenges, such as availability of material, manufacturing quality, and the costs. This review focuses on the advantages and applications of additive manufacturing that enable improvement in fuel cell performance. The critical challenges and directions for future development are also highlighted.

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“…Uma metodologia computacional foi empregada para caracterizar uma PaCOS planar típica (Figura 9a), utilizando um modelo bidimensional (Figura 9b) de elementos finitos para análise termomecânica em processos iterativos e bidimensional (Figura 9c) para adaptação a processos de RP. CHEN et al [32] afirmaram em artigo recente serem os primeiros tanto na área acadêmica quanto industrial a fabricar uma pilha a combustível de configuração planar (neste caso, uma pilha de membrana polimérica) utilizando uma técnica de prototipagem rápida. Os autores argumentaram que o tempo de manufatura empregado foi de aproximadamente 1 h, enquanto que em técnicas convencionais o tempo estimado de fabricação seria de 12 a 36 h. No entanto, detalhes do método de RP empregado não foram revelados.…”

Section: Fabricação De Pilhas a Combustível Por Rpunclassified

Prototipagem rápida de pilhas a combustível de óxido sólido

Hotza

2009

Matéria (Rio J.)

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Tecnologias de Prototipagem Rápida (Rapid Prototyping, RP) permitem a fabricação automática de peças com geometria complicada a partir de dados de Projeto Auxiliado por Computador (Computer Aided Design, CAD). A peça tridimensional é construída por consolidação de pó em camadas (processo "aditivo" ou "generativo"). Por isso, estas técnicas estão freqüentemente chamadas de fabricação de forma livre sólida ou fabricação em camadas. Em geral, uma abordagem de 5 etapas do desenvolvimento de produto é comumente aplicada: criação de um modelo de CAD, conversão do modelo de CAD em formato STL, fatiamento do arquivo STL em camadas de seção transversal, fabricação do produto, e finalmente acabamento superficial do produto. Técnicas de RP têm muitos benefícios sobre métodos tradicionais para geração de modelos, ferramentaria e construção de peças de produção de qualidade. Por exemplo, em contraste com processos "subtrativos" (furação, moagem, desbaste) os métodos "aditivos" de RP permitem a fabricação de produtos com estrutura complexa de poros internos que não podem ser fabricados por outros métodos. Técnicas de RP podem diminuir significativamente o tempo de fabricação de pilhas a combustível de óxido sólido (PaCOS) com pequena despesa de operação e reduzido custo de produto quando aplicadas corretamente. Tecnologias como Sinterização Seletiva a Laser (Selective Laser Sintering, SLS), Manufatura de Objetos Laminados (Laminated Object Manufacturing, LOM) e Impressão 3D (3D Printing, 3DP) podem ser usadas para fabricação de protótipos de pilhas a combustível, em particular na configuração planar.

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Planar array stack design aided by rapid prototyping in development of air-breathing PEMFC

Cited by 29 publications

References 12 publications

The formation of water droplets in an air-breathing PEMFC

The formation of water droplets in an air-breathing PEMFC

Accelerating Fuel Cell Development with Additive Manufacturing Technologies: State of the Art, Opportunities and Challenges

Prototipagem rápida de pilhas a combustível de óxido sólido

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