Dirk Henkensmeier 2024-01-12T03:45:01Z 2024-01-12T03:45:01Z 2021-12-14 2021-09-30 - https://pubs.kist.re.kr/handle/201004/77347 Polybenzimidazole (PBI) is a versatile polymer. In contact with acids or bases, it becomes ion conductive. Therefore, it can be used at different pH conditions, opening a broad range of opportunities.[1] We will show the use of PBI in several applications: High Temperature Polymer Electrolyte Fuel Cells (HT PEMFC):[2] A blend of PBI with a tetrazolecontaining polymer showed a conductivity of 195mS/cm at 160°C (PBI: 147mS/cm) after doping in phosphoric acid. In the HT PEMFC, the membrane was tested successfully for over 2400h. 2000h of that were at 800mA/cm2 . The performance was not only high, but also very stable, with a voltage loss of just 27.7？V/h. Vanadium Redox Flow Batteries (VRFB): PBI doped with sulfuric acid has a low conductivity of English Max Planck Institute for Solid State Research water electrolysis Polybenzimidazole PBI electrospinning pore filling HT PEMFC fuel cell VRFB flow battery Polybenzimidazole and its use in HT PEMFC, flow batteries, alkaline and AEM water electrolyzers Conference 1 Solid State Proton Conductors (SSPC-20) Solid State Proton Conductors (SSPC-20) GE Online 2021-09-27