Analysis of a novel MEMS-based design of micro-direct methanol fuel cell
Resource
Journal of Power Sources 178 (1): 125-131
Journal
Journal of Power Sources
Journal Volume
178
Journal Issue
1
Pages
125-131
Date Issued
2008
Date
2008
Author(s)
Abstract
A theoretical analysis is performed in this study for a novel MEMS-based design of micro-direct methanol fuel cell which was proposed by Motokawa et al. [S. Motokawa, M. Mohamedi, T. Momma, J. Electrochem. Commun. 6 (2004) 562-565]. The system comprises two parallel microchannels and is fabricated by a series of steps of MEMS techniques. The methanol stream occupies one channel as fuel and the saturated oxygen liquid stream flows in the other channel as oxidant. Both reactants are dissolved in dilute sulfuric acid solution. The top of the system is covered by a layer of Nafion membrane as the electrolyte layer. Such a novel design eliminates the complicated water management problem and could potentially enhance the volume power density. The cell performance is investigated in detail by examining the effects of several system parameters. The present results provide significant physical insights for the system and benefit the further optimal design of this novel MEMS-based design of microfuel cell for the fulfillment of practice application in portable power sources. © 2008 Elsevier B.V. All rights reserved.
Subjects
MEMS-based design; Micro-direct methanol fuel cell; Microchannel
Other Subjects
Channel flow; Electrolytes; MEMS; Microchannels; Oxidants; Sulfuric acid; MEMS-based design; Micro-direct methanol fuel cell; Nafion membranes; Volume power density; Direct methanol fuel cells (DMFC)
Type
journal article
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