While GPEs offer numerous advantages, they also face several challenges: - Compatibility with Electrodes: Ensuring good interfacial contact between the GPE and the electrodes is crucial for efficient ionic transport and catalytic activity. - Electrochemical Stability: The GPE must be stable under the operating conditions of the device to prevent degradation and ensure long-term performance. - Mechanical Properties: Balancing ionic conductivity with mechanical strength and flexibility can be challenging, as enhancing one property might compromise another.
