Nature CommunicationsIon diffusion overestimates figures of merit in polymeric mixed conductorsMaryam ShahiVianna N. LePaula Alarcon EspejoBowen DingJoel H. BombileChad RiskoMartin HeeneyAlexandra F. Paterson2026-01-27Full textDOI https://doi.org/10.1038/s41467-025-67546-2