Abstract
This paper reports on the fabrication and characterization of a passive silicon microfabricated direct methanol fuel cell (μDMFC). The main characteristics of the device are its capability to work without complex pumping systems, only by capillary pressure, and the fact that its performance is not affected by the device orientation. A simple fabrication process based in deep reactive ion etching (DRIE), allows obtaining a reliable and low-cost final device. The device consists of two silicon microfabricated plates mounted together with a commercial membrane electrode assembly (MEA). The impact of current collector design on microfuel cell performance is explored and current–voltage (I–V) and current–power (I–P) curves of the device at different methanol concentration and orientation are presented. Optimal performance was obtained for methanol concentrations between 3 and 5 M, achieving a maximum power density of 12 mW/cm2. The results obtained in this work demonstrate the feasibility of the device and give a guideline for design and conditions optimization.
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References
Aravamudhan S, Rahman ARA, Bhansali S (2005) Porous silicon based orientation independent, self-priming micro direct ethanol fuel cell. Sens Actuators A 123–124:497–504
Bae B, Kho BK, Lim TH, Oh IH, Hong SA, Ha HY (2006) Performance evaluation of passive DMFC single cells. J Power Sources 158:1256–1261
Chen CY, Yang P (2003) Performance of an air-breathing direct methanol fuel cell. J Power Sources 123:37–42
Chen R, Zhao TS (2007) Porous current collectors for passive direct methanol fuel cells. Electrochimica Acta 52:4317–4324
Jacobson SA, Epstein AH (2003) An informal survey of power MEMS. In: The international symposium on micro-mechanical engineering, December 1–3, 2003 ISMME2003-K18
Kamarudin SK, Daud WRW, Ho SL, Hasran UA (2007) Overview on the challenges and developments of micro-direct methanol fuel cells (DMFC). J Power Sources 163:743–754
Kho BK, Oh IH, Hong SA, Ha HY (2004) The effect of pretreatment methods on the performance f passive DMFCs. Electrochimica Acta 50:781–785
Kho BK, Bae B, Scibioh MA, Lee J, Ha HY (2005) On the consequences of methanol crossover in passive air-breathing direct methanol fuel cells. J Power Sources 142:50–55
Kim YJ, Bae B, Scibioh MA, Cho EA, Ha HY (2006) Behavioral pattern of a monopolar passive direct methanol fuel cell stack. J Power Sources 157:253–259
Larminie J, Dicks A (2003) Fuel cell explained, 2nd edn. Wiley, England
Liu JG, Zhao TS, Chen R, Wong CW (2005) Effect of membrane thickness on the performance and efficiency of passive direct methanol fuel cells. Electrochem Commun 7:288–294
Liu JG, Zhao TS, Liang ZX, Chen R (2006) Effect of membrane thickness on the performance and efficiency of passive direct methanol fuel cells. J Power Sources 153:61–67
Liu J, Sun G, Zhao F, Wang G, Zhao G, Chen L, Yi B, Xin Q (2004) Study of sintered stainless steel fiber felt as gas diffusion backing in air-breathing DMFC. J Power Sources 133:175–180
Meninger S, Mur-Miranda J-O, Amirtharajah R, Chandrakasan AP, Lang J (2001) Vibration-to-electric conversion. IEEE Trans VLSI Syst 9:64–76
Santander J, Sabaté N, Esquivel JP, Torres N, Del Campo FJ, Cané C (2006) Fabrication and characterization of a passive and orientation independent micro-DMFC. In: Proceeding of PowerMEMS 2006, San Francisco, USA, pp 77–80
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The work presented in this paper was supported by EU Integrated Project SENSATION (FP6-IST-507231) and Spanish CICYT Project CROMINA (TEC2004-06854-C03-02).
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Esquivel, J.P., Sabaté, N., Santander, J. et al. Fabrication and characterization of a passive silicon-based direct methanol fuel cell. Microsyst Technol 14, 535–541 (2008). https://doi.org/10.1007/s00542-007-0451-9
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DOI: https://doi.org/10.1007/s00542-007-0451-9