Highly Conducting Anion-Exchange Membranes Based on Cross-Linked Poly(norbornene): Ring Opening Metathesis Polymerization
Citations Over TimeTop 10% of 2019 papers
Abstract
A series of cross-linked (XL) anion-exchange membranes (AEMs) were synthesized on the basis of the ring opening metathesis polymerization (ROMP) of norbornene monomers (rPNB). Poly(bromopropyl norbornene)-block-poly(butyl norbornene) diblock copolymers and poly(bromopropyl norbornene) homopolymers have an all-hydrocarbon backbone and a high ion-exchange capacity (IEC), up to 4.73 mequiv/g. N,N,N′,N′-Tetramethyl-1,6-hexanediamine (TMHDA) was used as a cross-linking agent to control the water uptake and mechanical instability. The cross-linked (20 mol % concentration) membrane made from high molecular weight poly(bromopropyl norbornene) (XL20-rPNB-LY100) had the highest conductivity of 99 mS/cm at 25 °C and 195 mS/cm at 80 °C. The alkaline stability of the best membrane was excellent with no detectable degradation in conductivity after 792 h in 1 M NaOH at 80 °C. Membranes were successfully tested as the polymer electrolyte in an AEM fuel cell.
Related Papers
- → (Arylimido)vanadium(V)–Alkylidene Complexes Containing Fluorinated Aryloxo and Alkoxo Ligands for Fast Living Ring-Opening Metathesis Polymerization (ROMP) and Highly Cis-Specific ROMP(2015)82 cited
- → Synthesis of (Imido)niobium(V)–Alkylidene Complexes That Exhibit High Catalytic Activities for Metathesis Polymerization of Cyclic Olefins and Internal Alkynes(2016)34 cited
- → A Vanadium(V) Alkylidene Complex Exhibiting Remarkable Catalytic Activity for Ring-Opening Metathesis Polymerization (ROMP)(2005)114 cited
- → Cis-Specific Chain Transfer Ring-Opening Metathesis Polymerization Using a Vanadium(V) Alkylidene Catalyst for Efficient Synthesis of End-Functionalized Polymers(2017)43 cited
- → Reactivity of niobium(V) pentaalkoxide complexes: Ring-opening metathesis polymerization of norbornene(2023)1 cited