A critical assessment on functional attributes and degradation mechanism of membrane electrode assembly components in direct methanol fuel cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number13938
Journal / PublicationSustainability (Switzerland)
Volume13
Issue number24
Online published16 Dec 2021
Publication statusPublished - Dec 2021

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Abstract

Direct methanol fuel cells (DMFC) are typically a subset of polymer electrolyte membrane fuel cells (PEMFC) that possess benefits such as fuel flexibility, reduction in plant balance, and benign operation. Due to their benefits, DMFCs could play a substantial role in the future, specifically in replacing Li-ion batteries for portable and military applications. However, the critical concern with DMFCs is the degradation and inadequate reliability that affect the overall value chain and can potentially impede the commercialization of DMFCs. As a consequence, a reliability assessment can provide more insight into a DMFC component’s attributes. The membrane electrode assembly (MEA) is the integral component of the DMFC stack. A comprehensive understanding of its functional attributes and degradation mechanism plays a significant role in its commercialization. The methanol crossover through the membrane, carbon monoxide poisoning, high anode polarization by methanol oxidation, and operating parameters such as temperature, humidity, and others are significant contributions to MEA degradation. In addition, inadequate reliability of the MEA impacts the failure mechanism of DMFC, resulting in poor efficiency. Consequently, this paper provides a comprehensive assessment of several factors leading to the MEA degradation mechanism in order to develop a holistic understanding.

Research Area(s)

  • Direct methanol fuel cells (DMFCs), Flooding, Membrane electrode assembly (MEA), Methanol crossover, Methanol oxidation, Nafion®, Platinum (Pt), Polarization, Polymer electrolyte membrane fuel cells (PEM-FCs), Ruthenium (Ru)

Citation Format(s)

A critical assessment on functional attributes and degradation mechanism of membrane electrode assembly components in direct methanol fuel cells. / Jayakumar, Arunkumar; Madheswaran, Dinesh Kumar; Kumar, Nallapaneni Manoj.

In: Sustainability (Switzerland), Vol. 13, No. 24, 13938, 12.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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