Innovative gasketless carbon composite bipolar plates for PEM fuel cells

Lim, Jun Woo; Kim, Minkook; Kim, Ki‐Hyun; Lee, Dai Gil

doi:10.1016/j.ijhydene.2012.10.024

Cited by 25 publications

(9 citation statements)

References 17 publications

(11 reference statements)

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“…Bu nedenle literatürde gerçekleştirilen çalışmalar, daha çok elektriksel özelliklerin iyileştirilmesine yönelik olmuştur. Lim ve arkadaşları [41,43] ve Yu vd. [42], karbon fiber/epoksi tabanlı kompozit malzemelerden ürettikleri BP'leri karakterize etmişler ve elektriksel özelliklerini iyileştirmeyi amaçlamışlardır.…”

Section: Kompozit Malzemelerden Bp üRetimiunclassified

PEM Yakıt Pili Bipolar Plakalarının Geleneksel ve Yenilikçi Üretim Teknikler

Topcu¹,

Topcu²,

Aydın³

et al. 2019

acperpro

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ÖzetYakın gelecekte petrol rezervlerinin tükeneceği öngörülmemektedir, fakat hidrokarbon kökenli yakıtların kullanılması canlılar için sağlığa olumsuz etki eden emisyonlar oluşturmaktadır. Bu nedenle dünya genelinde yenilenebilir, alternatif ve temiz enerji kaynaklarına yönelim söz konusu olmaktadır. Yakıt pilleri, sessiz ve verimli çalışabilen, aynı zamanda zararlı emisyonları olmayan bir elektrik üretecidir. Ticari uygulamaları da bulunan yakıt pilleri, havacılık, otomotiv, askeri, denizaltı yerel ve mobil uygulamalarda kullanılabilmektedir. Bu da kapsamlı bir uygulama alanı olduğunun göstergesidir. Bu çalışmada yakıt pili tiplerinden PEM yakıt pilleri araştırma konusu olarak seçilmiş ve PEM yakıt pili bileşenlerinden bipolar plakaların üretim teknikleri ele alınmıştır. Geleneksel ve yenilikçi üretim tekniklerinin araştırıldığı bu çalışmada, üretim trendinin ne aşamada olduğu tartışılmış ve konunun gelecek perspektifi göz önünde bulundurularak yapılan araştırmalar değerlendirilmiştir.Anahtar Kelimeler: PEM yakıt pili, bipolar plaka, üretim teknikleri, geleneksel, toz metalürjisi, eklemeli imalat. AbstractOil reserves are not predicted to be wasted in the near future, but usage of hydrocarbon based fuels generates harmful emissions which affects the human health negatively. Therefore, there is a tendency towards renewable, alternative and clean energy sources worldwide. Fuel cells are electricity generators that can operate quietly and efficiently, and also without harmful emissions. Fuel cells can be used in aviation, automotive, military, submarine local and mobile applications which are also used in commercial applications. This situation show that comprehensive application fields of PEMFC. In this study, PEM fuel cell was selected as research area which is a type of fuel cell, and manufacturing techniques of bipolar plates investigated, which is a component of PEMFC. Traditional and innovator production techniques were researched and studies were evaluated in the literature considering the future perspective of the subject.

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Section: Kompozit Malzemelerden Bp üRetimiunclassified

PEM Yakıt Pili Bipolar Plakalarının Geleneksel ve Yenilikçi Üretim Teknikler

Topcu¹,

Topcu²,

Aydın³

et al. 2019

acperpro

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“…The metal insertion technique was addressed in this work for improving the volume conductivity of BPs, since it can be developed to be an over-molding process that is suitable for realistic mass production in industries. The possible types of metals with great potential selected for the over-molding technique may be a graphite sheet, carbon fabric layer, metal sheet and metal grid [13][14][15][16][17][18]. Regardless of that, the technique and material options heavily depend on the requirement of the volume resistance for a fuel cell application which should be lower than 30.0 mΩ cm 2 (a requirement set by the US department of energy) [13].…”

Section: Introductionmentioning

confidence: 99%

“…The metal insertion was also subjected to experimentation where several types of metals were used to study the prospect of using this method to increase electrical conductivity. Copper [16], thin aluminum foil [17] Figure 1: Schematic of electron transport through DMFC stack (A); electron transport on a BP surface (B). and metal mesh [18] are interesting metals that were studied for this technique.…”

Section: Introductionmentioning

confidence: 99%

Metal-insert technique for polypropylene composite bipolar plate manufacturing

Yeetsorn

Maiket

2020

Journal of Polymer Engineering

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A single cell of direct methanol fuel cell (DMFC) typically delivers an electrical potential between 0.5 and 1 V; thus DMFCs are assembled in parallel to meet power demands (1–5 kW). Bipolar plates (BPs) are the primary components connecting a single cell to the adjacent cells so that they provide optimum electrical conductivity. The objective of this research is to reduce the volume resistance of BPs made from a polypropylene/carbon composite by utilizing a metal insert technique. A major obstacle when it comes to molding composite plates inserted by a thin metal sheet is the delamination of material layers after the cooling process. The delamination issue is due to different surface polarities between metal and polypropylene-composite surfaces. One of the strategies to solve this issue is to modify the surface of one layer for creating similarity of the surface polarity. A metal sheet surface was coated with graphene using a cold spraying technique to enhance adhesion ability. The suitable spraying conditions were determined by experimenting with varying temperature, pressure, graphene quantity and graphene types. The effectiveness of surface modification by the graphene spraying technique was assessed by a surface morphology observation, an electrical conductivity measurement and DMFC performance tests. Results were interesting, they indicated that when DMFC was assembled with silver sheet, inserted BPs provided 25.13 mW/cm2 of power density, 3,350.7 mWh of generated energy and 67% of efficiency. This highlights that the performance of a BP prototype is superior to the performance of a commercial composite bipolar plate.

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“…There are two common pH sensors on the market, which are the potential pH sensor and conductance pH sensor [ 2 ]. The potential pH sensor deduces pH value by referring to the potential difference between electrodes; it is applicable to multiple fluids, but the process is complex and its volume is relatively large [ 3 ]. The conductance pH sensor uses an interdigital electrode coated with a dielectric substance to measure conductance; the sensor has a small area and high accuracy and performs better in measuring specific fluids [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Flexible Four-In-One Microsensor to Internal Real-Time Monitoring of Proton Exchange Membrane Fuel Cell

Lee

Chen²,

Chiu

et al. 2018

Sensors

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In recent years, the development of green energy sources, such as fuel cell, biomass energy, solar energy, and tidal energy, has become a popular research subject. This study aims at a flexible four-in-one microsensor, which can be embedded in the proton exchange membrane fuel cell (PEMFC) for real-time microscopic diagnosis so as to assist in developing and improving the technology of the fuel cell. Therefore, this study uses micro-electro-mechanical systems (MEMS) technology to integrate a micro humidity sensor, micro pH sensor, micro temperature sensor, and micro voltage sensor into a flexible four-in-one microsensor. This flexible four-in-one microsensor has four functions and is favorably characterized by small size, good acid resistance and temperature resistance, quick response, and real-time measurement. The goal was to be able to put the four-in-one microsensor in any place for measurement without affecting the performance of the fuel cell.

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Innovative gasketless carbon composite bipolar plates for PEM fuel cells

Cited by 25 publications

References 17 publications

PEM Yakıt Pili Bipolar Plakalarının Geleneksel ve Yenilikçi Üretim Teknikler

PEM Yakıt Pili Bipolar Plakalarının Geleneksel ve Yenilikçi Üretim Teknikler

Metal-insert technique for polypropylene composite bipolar plate manufacturing

Application of Flexible Four-In-One Microsensor to Internal Real-Time Monitoring of Proton Exchange Membrane Fuel Cell

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