Modeling two-phase flow in three-dimensional complex flow-fields of proton exchange membrane fuel cells

Jinyong Kim, Gang Luo, Chao Yang Wang

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

3D fine-mesh flow-fields recently developed by Toyota Mirai improved water management and mass transport in proton exchange membrane (PEM) fuel cell stacks, suggesting their potential value for robust and high-power PEM fuel cell stack performance. In such complex flow-fields, Forchheimer's inertial effect is dominant at high current density. In this work, a two-phase flow model of 3D complex flow-fields of PEMFCs is developed by accounting for Forchheimer's inertial effect, for the first time, to elucidate the underlying mechanism of liquid water behavior and mass transport inside 3D complex flow-fields and their adjacent gas diffusion layers (GDL). It is found that Forchheimer's inertial effect enhances liquid water removal from flow-fields and adds additional flow resistance around baffles, which improves interfacial liquid water and mass transport. As a result, substantial improvements in high current density cell performance and operational stability are expected in PEMFCs with 3D complex flow-fields, compared to PEMFCs with conventional flow-fields. Higher current density operation required to further reduce PEMFC stack cost per kW in the future will necessitate optimizing complex flow-field designs using the present model, in order to efficiently remove a large amount of product water and hence minimize the mass transport voltage loss.

Original languageEnglish (US)
Pages (from-to)419-429
Number of pages11
JournalJournal of Power Sources
Volume365
DOIs
StatePublished - Jan 1 2017

Fingerprint

Proton exchange membrane fuel cells (PEMFC)
two phase flow
Two phase flow
fuel cells
Flow fields
flow distribution
membranes
protons
Mass transfer
high current
Current density
Water
current density
water
Liquids
liquids
water management
flow resistance
baffles
gaseous diffusion

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

@article{65d4ae7f67e14b9093fb85f84b7742a3,
title = "Modeling two-phase flow in three-dimensional complex flow-fields of proton exchange membrane fuel cells",
abstract = "3D fine-mesh flow-fields recently developed by Toyota Mirai improved water management and mass transport in proton exchange membrane (PEM) fuel cell stacks, suggesting their potential value for robust and high-power PEM fuel cell stack performance. In such complex flow-fields, Forchheimer's inertial effect is dominant at high current density. In this work, a two-phase flow model of 3D complex flow-fields of PEMFCs is developed by accounting for Forchheimer's inertial effect, for the first time, to elucidate the underlying mechanism of liquid water behavior and mass transport inside 3D complex flow-fields and their adjacent gas diffusion layers (GDL). It is found that Forchheimer's inertial effect enhances liquid water removal from flow-fields and adds additional flow resistance around baffles, which improves interfacial liquid water and mass transport. As a result, substantial improvements in high current density cell performance and operational stability are expected in PEMFCs with 3D complex flow-fields, compared to PEMFCs with conventional flow-fields. Higher current density operation required to further reduce PEMFC stack cost per kW in the future will necessitate optimizing complex flow-field designs using the present model, in order to efficiently remove a large amount of product water and hence minimize the mass transport voltage loss.",
author = "Jinyong Kim and Gang Luo and Wang, {Chao Yang}",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.jpowsour.2017.09.003",
language = "English (US)",
volume = "365",
pages = "419--429",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

Modeling two-phase flow in three-dimensional complex flow-fields of proton exchange membrane fuel cells. / Kim, Jinyong; Luo, Gang; Wang, Chao Yang.

In: Journal of Power Sources, Vol. 365, 01.01.2017, p. 419-429.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Modeling two-phase flow in three-dimensional complex flow-fields of proton exchange membrane fuel cells

AU - Kim, Jinyong

AU - Luo, Gang

AU - Wang, Chao Yang

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 3D fine-mesh flow-fields recently developed by Toyota Mirai improved water management and mass transport in proton exchange membrane (PEM) fuel cell stacks, suggesting their potential value for robust and high-power PEM fuel cell stack performance. In such complex flow-fields, Forchheimer's inertial effect is dominant at high current density. In this work, a two-phase flow model of 3D complex flow-fields of PEMFCs is developed by accounting for Forchheimer's inertial effect, for the first time, to elucidate the underlying mechanism of liquid water behavior and mass transport inside 3D complex flow-fields and their adjacent gas diffusion layers (GDL). It is found that Forchheimer's inertial effect enhances liquid water removal from flow-fields and adds additional flow resistance around baffles, which improves interfacial liquid water and mass transport. As a result, substantial improvements in high current density cell performance and operational stability are expected in PEMFCs with 3D complex flow-fields, compared to PEMFCs with conventional flow-fields. Higher current density operation required to further reduce PEMFC stack cost per kW in the future will necessitate optimizing complex flow-field designs using the present model, in order to efficiently remove a large amount of product water and hence minimize the mass transport voltage loss.

AB - 3D fine-mesh flow-fields recently developed by Toyota Mirai improved water management and mass transport in proton exchange membrane (PEM) fuel cell stacks, suggesting their potential value for robust and high-power PEM fuel cell stack performance. In such complex flow-fields, Forchheimer's inertial effect is dominant at high current density. In this work, a two-phase flow model of 3D complex flow-fields of PEMFCs is developed by accounting for Forchheimer's inertial effect, for the first time, to elucidate the underlying mechanism of liquid water behavior and mass transport inside 3D complex flow-fields and their adjacent gas diffusion layers (GDL). It is found that Forchheimer's inertial effect enhances liquid water removal from flow-fields and adds additional flow resistance around baffles, which improves interfacial liquid water and mass transport. As a result, substantial improvements in high current density cell performance and operational stability are expected in PEMFCs with 3D complex flow-fields, compared to PEMFCs with conventional flow-fields. Higher current density operation required to further reduce PEMFC stack cost per kW in the future will necessitate optimizing complex flow-field designs using the present model, in order to efficiently remove a large amount of product water and hence minimize the mass transport voltage loss.

UR - http://www.scopus.com/inward/record.url?scp=85028980663&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85028980663&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2017.09.003

DO - 10.1016/j.jpowsour.2017.09.003

M3 - Article

AN - SCOPUS:85028980663

VL - 365

SP - 419

EP - 429

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -