Construction of Successive Proton Conduction Channels to Accelerate the Proton Conduction Process in Flexible Proton Exchange Membranes

• DOI: 10.1021/acsami.4c00192
• Publication Date: 2024-02-29T20:56:50Z
• Authors: Qingquan Li; Di Song; Weimin Gao; Dan Wu; Niuniu Zhang; Xinna Gao; Quantong Che
• Keywords: Polystyrene; Proton Transport

Successive proton conduction channels are constructed with the spin coating method in flexible exchange membranes (PEMs). In this research, phosphoric acid (PA) molecules immobilized multilayered microstructure of Kevlar nanofibers and polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SEBS) polymer molecular chains. As a result, successive can accelerate process prepared membrane microstructure. Additionally, fractures composite from external force folding stretching operations modified by inner PA molecules. Notably, numerous further combined through formed intermolecular hydrogen bonding. The stretched absorbs more owing to arrangement molecules, nanofibers, SEBS thus exhibits enhanced ability, such as through-plane conductivity 1.81 × 10–1 S cm–1 at 160 °C that 4.53 10–2 120 lasting for 600 h. Furthermore, tensile stress PA-doped reaches (3.91 ± 0.40)–(6.15 0.43) MPa. A single fuel cell peak power density 483.3 mW cm–2 °C.