PES (polyethersulfon) membrane is an insulator and does not conduct electricity. PES must be a porous material to serve as a membrane. There are numerous conductive composites based on PES. Search the literature which one fits your requirements.

Please look at the following below links which may help you in your analysis:

https://pdfs.semanticscholar.org/5d88/0fdf651ece722332338d304ebcd692cf0f01.pdf

https://www.researchgate.net/publication/332551565_DEVELOPMENT_OF_A_NEW_COMPOSITE_CONDUCTIVE_POROUS_MEMBRANE_PESPANIrGO_FOR_ELECTROCHEMICAL_FOULING_MITIGATION

https://www.sbir.gov/sbirsearch/detail/372081

Thanks