Development of high-performance roll-to-roll-coated gas-diffusion-electrode-based fuel cells

Mauger, Scott A.1; Wang, Min1,6; Cetinbas, Firat C.2; Dzara, Michael J.3; Park, Jaehyung4; Myers, Deborah J.4; Ahluwalia, Rajesh K.2; Pylypenko, Svitlana; Hu, Leiming5,7; Litster, Shawn3,5; Neyerlin, K. C.1; Ulsh, Michael1

2021-09-15

10.1016/j.jpowsour.2021.230039

JOURNAL OF POWER SOURCES   影响因子和分区

0378-7753

1873-2755

This study focuses on determining fabrication conditions to create high-performance roll-to-roll-coated (R2Rcoated) gas-diffusion electrodes (GDEs) for proton-exchange-membrane fuel cells (PEMFCs). Here, we examine how process conditions influence the distribution of ionomer in the electrode, which is shown to be critical for high performance. Using a combination of Kelvin probe, X-ray photoelectron spectroscopy, and nano-scale X-ray computed tomography we show that formation of an ionomer-rich surface is promoted by using a higher drying rate. We show that R2R-coated GDEs have higher surface ionomer concentration than spray-coated GDEs, which enables these R2R-coated GDEs to not need an additional ionomer overlayer, as is typically the case for spraycoated GDEs. This will reduce the number of processing steps and lower material costs in a manufacturing setting. This work shows that with the appropriate selection of materials, ink formulation, and processing conditions, direct-coated GDEs are a viable pathway for fuel cell manufacturing.

PEM fuel Cells Roll-to-roll coating Gas diffusion electrodes Slot die coating

SCI ; EI

英语

其他

U.S. Department of Energy (DOE)[DE-AC3608GO28308] ; U.S. Department of Energy Office of Science laboratory[DE-AC02-06CH11357] ; DOE Office of Science[DE-AC02 06CH11357] ; NSF PFI-RP[1919280] ; National Science Foundation[1626619]

Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000704467300004

ELSEVIER

MATERIALS SCIENCE

Web of Science

1.Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO 80401 USA
2.Argonne Natl Lab, Div Energy Syst, Lemont, IL 60439 USA
3.Colorado Sch Mines, Dept Chem, Golden, CO 80401 USA
4.Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA
5.Carnegie Mellon Univ, Dept Mech Engn, Pittsburgh, PA 15213 USA
6.Southern Univ Sci & Technol, Shenzhen 518055, Guangdong, Peoples R China
7.Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO 80401 USA

Mauger, Scott A.,Wang, Min,Cetinbas, Firat C.,et al. Development of high-performance roll-to-roll-coated gas-diffusion-electrode-based fuel cells[J]. JOURNAL OF POWER SOURCES,2021,506.

Mauger, Scott A..,Wang, Min.,Cetinbas, Firat C..,Dzara, Michael J..,Park, Jaehyung.,...&Ulsh, Michael.(2021).Development of high-performance roll-to-roll-coated gas-diffusion-electrode-based fuel cells.JOURNAL OF POWER SOURCES,506.

Mauger, Scott A.,et al."Development of high-performance roll-to-roll-coated gas-diffusion-electrode-based fuel cells".JOURNAL OF POWER SOURCES 506(2021).