Water Management in Micro Direct Methanol Fuel Cells: Using Integrated Passive Micromixer

In a DMFC (direct methanol fuel cell), water management is a critical issue for enhancing DMFC power performance and lifetime. However, the methanol-water mixing tank for water management is difficult to be miniaturized and integrated into a micro-DMFC. This paper proposes an in-fuel cell micromixer, the self-vortical micromixer, which belongs to a passive micromixer, to perform methanol and water mixing inside a micro-DMFC.