講演情報
[16p-PB1-8]Ceria-incorporated sulfonated PVDF composite membranes for fuel cell applications
〇(DC)Gagan Kumar Bhatt1, Kanishka De Silva1, Masanori Hara1, Masamichi Yoshimura1 (1.Toyota Tech. Inst.)
キーワード：
Fuel cells、Proton Exchange Membrane
Polymer electrolyte membranes (PEMs) with high proton conductivity (PC) and good mechanical strength are highly desirable for developing cost-effective fuel cells. Sulfonated polyvinylidene fluoride (SPVDF) is a strong contender for PEM applications, primarily due to its exceptional mechanical strength and thermal resistance. The incorporation of ceria nanoparticles can enhance the PC of SPVDF membranes by improving water retention and facilitating the formation of well-connected proton-transport channels (Figure 1 (a)).
Membranes were prepared by incorporating ceria in the SPVDF matrix. Briefly, ceria and SPVDF are mixed in dimethylformamide (DMF), followed by the solution casting and drying in a vacuum oven.
Figure 1(b) shows the PC measured at 90 °C for the fabricated membranes having a size of 1.5 x 1.5 cm and a thickness of around 90-130 μm. The membrane with 2 wt.% ceria incorporated into SPVDF demonstrated a nearly 4-fold increase in PC (3.7 mS/cm at 90 °C) compared to bare SPVDF. We analysed the mechanical strength of the membranes and observed that the ceria-incorporated membrane exhibits good mechanical strength (~329.5 MPa), as shown in Figure 1(b). The enhanced proton conductivity, combined with good mechanical strength, makes them a competitive alternative for use as a PEM in fuel cells.
Membranes were prepared by incorporating ceria in the SPVDF matrix. Briefly, ceria and SPVDF are mixed in dimethylformamide (DMF), followed by the solution casting and drying in a vacuum oven.
Figure 1(b) shows the PC measured at 90 °C for the fabricated membranes having a size of 1.5 x 1.5 cm and a thickness of around 90-130 μm. The membrane with 2 wt.% ceria incorporated into SPVDF demonstrated a nearly 4-fold increase in PC (3.7 mS/cm at 90 °C) compared to bare SPVDF. We analysed the mechanical strength of the membranes and observed that the ceria-incorporated membrane exhibits good mechanical strength (~329.5 MPa), as shown in Figure 1(b). The enhanced proton conductivity, combined with good mechanical strength, makes them a competitive alternative for use as a PEM in fuel cells.