Utilization of mesoporous phosphotungstic acid in nanocellulose membranes for direct methanol fuel cells
RSC ADVANCES(2022)
摘要
Nanocellulose (NC) composite membranes containing novel ternary materials including NC, imidazole (Im), and mesoporous phosphotungstic acid (m-PTA) were successfully fabricated by a phase inversion method. The single-particle size of NC was 88.79 nm with a spherical form. A m-PTA filler with a mesopore size of 4.89 nm was also successfully synthesized by a self-assembly method. Moreover, the fabricated membrane NC/Im/m-PTA-5 exhibited the best performances towards its proton conductivity and methanol permeability at 31.88 mS cm(-1) and 1.74 x 10(-6) cm(2) s(-1), respectively. The membrane selectivity was 1.83 x 10(4) S cm(-3).
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