4.7 Review

Review on water management methods for proton exchange membrane fuel cells

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 46, Issue 22, Pages 12206-12229

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.06.211

Keywords

Proton exchange membrane fuel cell; Water transport simulation; Water management; Water fault diagnosis; Water visualization; Flooding

Funding

  1. Jiangsu Basic Research Project (Natural Science Fund) [BK20180982]

Ask authors/readers for more resources

Managing water content in PEMFCs is crucial, as both excess or lack of water can impact performance and lifespan. Monitoring water flow and accumulation is an effective way to determine the situation.
Control of water content of proton exchange membrane fuel cells (PEMFCs) within a reasonable rangeis a question worthy of study. This paper addresses questions of water transport, water fault, and water management methods in a PEMFC. Both an excess (overflow) or lack (dehydration) of water in a fuel cell may affect the performance and the service life. Herein, we describe in detail the effects of water content on the cathode, anode, gas diffusion layer (GDL), catalyst layer (CL) and flow channel. Monitoring the flow and accumulation of water directly in the PEMFC is the most effective approach to determine which of the two scenarios, overflow or dehydration, occurs. The water transport can be effectively investigated in a transparent fuel cell, using neutron scanning, nuclear magnetic resonance, and X-ray irradiation. Regarding the PEMFC water management, this paper reviews some current methods, such as improvement of the flow field structure, changing hydrophilic materials, and optimizing control systems. ? 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

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