Journal
MICROMACHINES
Volume 12, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/mi12040381
Keywords
micro-direct methanol fuel cell; trilaminar-catalytic; water management; methanol crossover
Categories
Funding
- National Natural Science Foundation of China [51975023]
Ask authors/readers for more resources
The novel trilaminar-catalytic layer structure enhances oxygen transport while preventing methanol crossover in the mu-DMFC, resulting in increased power density and longer discharging time.
A membrane electrode assembly (MEA) with a novel trilaminar-catalytic layered structure was designed and fabricated for a micro-direct methanol fuel cell (mu-DMFC). The trilaminar-catalytic layer comprises three porous layers. The medial layer has a lower porosity than the inner and outer layers. The simulation results predicted a lower water content and a higher oxygen concentration in the trilaminar-catalytic layer. The novel trilaminar-catalytic layer enhanced the back diffusion of water from the cathode to the anode, which reduces methanol crossover and improves oxygen mass transportation. The electrochemical results of the half-cell test indicate that the novel MEA has a greatly increased cathode polarization and a slightly increased anode polarization. Thus, this novel mu-DMFC structure has a higher power density and a longer discharging time, and hence may be used in portable systems.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available