Effect of operating conditions on water management of membrane electrode assembly for direct methanol fuel cell

doi:10.3969/j.issn.2095-4239.2013.06.008

Abstract

Abstract: This paper concerns the effects of water balance in a membrane electrode assembly (MEA) of direct methanol fuel cells (DMFCs) on DMFC performance. The effects of operating conditions including cell temperature, air rate and current density on the water balance are investigated. It is shown that the net water transport coefficient provides the water balance state and can be regulated by the operating conditions. For a single cell stable operation for 200 h can be achieved under optimized operating conditions of 100 mA/cm² at 60℃ and ambient dry air at 80 mL/min.

Key words: direct methanol fuel cells (DMFCs), membrane electrode assembly, water balance, net water transport coefficient, stability

CLC Number:

TQ028.8

GAO Yan, WANG Suli, HOU Hongying, ZHAO Lliang, ZHENG Kaiyuan. Effect of operating conditions on water management of membrane electrode assembly for direct methanol fuel cell[J]. Energy Storage Science and Technology, 2013, 2(6): 610-614.

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