Abstract
It is important to investigate the two-phase condition in PEFC gas diffusion layer (GDL) to improve mass transfer rate. The structure of simulated GDL made of layered carbon fibers was produced by the numerical analysis in this study, and the structural properties of various simulated GDL were investigated, for example pore distribution, permeability and tortuosity. With these structures, the two-phase analysis model in GDL was developed with a 3-dimensional network model converted from simulated GDL directly, and the two-phase condition in GDL was calculated on various conditions of GDL structure and hydrophilicity. And the influences of multi-layer GDL structure were evaluated. As a result, it was confirmed that the liquid water distribution was affected by multi-layer structure and that optimizing the connection of porepore and changing the contact angle along the direction of water flowing out lead to decrease the amount of water and increase O2 diffusivity.
| Original language | English |
|---|---|
| Title of host publication | ECS Transactions - Proton Exchange Membrane Fuel Cells 8 |
| Pages | 1661-1671 |
| Number of pages | 11 |
| Edition | 2 PART 2 |
| DOIs | |
| Publication status | Published - Dec 1 2008 |
| Event | Proton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting - Honolulu, HI, United States Duration: Oct 12 2008 → Oct 17 2008 |
Publication series
| Name | ECS Transactions |
|---|---|
| Number | 2 PART 2 |
| Volume | 16 |
| ISSN (Print) | 1938-5862 |
| ISSN (Electronic) | 1938-6737 |
Other
| Other | Proton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting |
|---|---|
| Country | United States |
| City | Honolulu, HI |
| Period | 10/12/08 → 10/17/08 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Evaluation of liquid and mass transfer in GDL by direct network simulation. / Inoue, G.; Mutsukuma, Y.; Minemoto, M.
ECS Transactions - Proton Exchange Membrane Fuel Cells 8. 2 PART 2. ed. 2008. p. 1661-1671 (ECS Transactions; Vol. 16, No. 2 PART 2).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Evaluation of liquid and mass transfer in GDL by direct network simulation
AU - Inoue, G.
AU - Mutsukuma, Y.
AU - Minemoto, M.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - It is important to investigate the two-phase condition in PEFC gas diffusion layer (GDL) to improve mass transfer rate. The structure of simulated GDL made of layered carbon fibers was produced by the numerical analysis in this study, and the structural properties of various simulated GDL were investigated, for example pore distribution, permeability and tortuosity. With these structures, the two-phase analysis model in GDL was developed with a 3-dimensional network model converted from simulated GDL directly, and the two-phase condition in GDL was calculated on various conditions of GDL structure and hydrophilicity. And the influences of multi-layer GDL structure were evaluated. As a result, it was confirmed that the liquid water distribution was affected by multi-layer structure and that optimizing the connection of porepore and changing the contact angle along the direction of water flowing out lead to decrease the amount of water and increase O2 diffusivity.
AB - It is important to investigate the two-phase condition in PEFC gas diffusion layer (GDL) to improve mass transfer rate. The structure of simulated GDL made of layered carbon fibers was produced by the numerical analysis in this study, and the structural properties of various simulated GDL were investigated, for example pore distribution, permeability and tortuosity. With these structures, the two-phase analysis model in GDL was developed with a 3-dimensional network model converted from simulated GDL directly, and the two-phase condition in GDL was calculated on various conditions of GDL structure and hydrophilicity. And the influences of multi-layer GDL structure were evaluated. As a result, it was confirmed that the liquid water distribution was affected by multi-layer structure and that optimizing the connection of porepore and changing the contact angle along the direction of water flowing out lead to decrease the amount of water and increase O2 diffusivity.
UR - http://www.scopus.com/inward/record.url?scp=63149105921&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63149105921&partnerID=8YFLogxK
U2 - 10.1149/1.2982007
DO - 10.1149/1.2982007
M3 - Conference contribution
AN - SCOPUS:63149105921
SN - 9781566776486
T3 - ECS Transactions
SP - 1661
EP - 1671
BT - ECS Transactions - Proton Exchange Membrane Fuel Cells 8
ER -