Poly(p-phenylene)-based membranes with cerium for chemically durable polymer electrolyte fuel cell membranes.

ABSTRACT: A poly(p-phenylene)-based multiblock polymer is developed with an oligomeric chain extender and cerium (CE-sPP-PPES + Ce³⁺) to realize better performance and durability in proton exchange membrane fuel cells. The membrane performance is evaluated in single cells at 80 °C and at 100% and 50% relative humidity (RH). The accelerated stability test is conducted 90 °C and 30% RH, during which linear sweep voltammetry and hydrogen permeation detection are monitored periodically. Results demonstrate that the proton conductivity of the pristine hydrocarbon membranes is superior to that of PFSA membranes, and the hydrogen crossover is significantly lower. In addition, a composite membrane containing cerium performs similarly to a pristine membrane, particularly at low RH levels. Adding c

SUBMITTER: Kodir A 

PROVIDER: S-EPMC10906415 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature