Investigation of the effects of compression pressure on direct methanol fuel cell

MnO/reduced graphene oxide sheet hybrid as an anode for Li-ion batteries with enhanced lithium storage performance

“…GITT measurement has been widely used to study the thermodynamic and kinetic properties of the electrode materials [7,48,49]. Fig.…”

Effect of diffusion layer compression on passive DMFC performance

“…The effects of diffusion layer compression on the DMFC performance has also been stressed in few works [21][22][23][24] but they are mainly concerned with active feed DMFC. Lim et al [21] found broken fibers and cleavage like defects on the carbon paper diffusion layer at high compression which leads to remarkable decrease in the limiting current density of the active feed DMFC.…”

“…Lim et al [21] found broken fibers and cleavage like defects on the carbon paper diffusion layer at high compression which leads to remarkable decrease in the limiting current density of the active feed DMFC. Zhu et al [22] studied the effect of compression pressure, reloading and air feeding mode on the performance of a DMFC and found that the optimum pressure decreases when the cell is compressed again because of the residual strain of the GDL. Throughout the study they used forced convection air feed mode and provided some glimpse of the results with the air-breathing mode.…”

“…The teflonized carbon cloth (Avcarb 1071) with micro-porous layer is used as diffusion layer on both anode and cathode side. The diffusion layer compression is controlled by setting the thickness of gasket and the torque applied on the bolts [16,22]. This study will be useful for performance improvement of the passive DMFC.…”

Nonlinear orthotropic model of the inhomogeneous assembly compression of PEM fuel cell gas diffusion layers

“…GDL compression occurs during the assembly/disassembly process of the stack [16,17], but also during fuel cell operation due to membrane swelling (an effect that is not considered in this paper) [18e24]. Additionally, the repetitive channel rib pattern of the bipolar plates results in a highly inhomoge neous compressive load, so that while large strains are produced under the rib, typically between 10 and 40% of the initial thickness [28e30], the region under the channels remains approximately at its initial uncompressed state.…”