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Highly alkali-stable polyolefin-based anion exchange membrane enabled by N-cyclic quaternary ammoniums for alkaline fuel cells by Lei Liu; Yunkang Deng; Wanli Zhang; Jingjing Zhang; Wanzhen Ma; Lelong Li; Xiaojuan Zhang; Nanwen Li is a Engineering article available to read on EtoBox.
What is Highly alkali-stable polyolefin-based anion exchange membrane enabled by N-cyclic quaternary ammoniums for alkaline fuel cells about?
Polyolefin-based anion exchange membranes (AEMs) have shown great promise in AEM fuel cells thanks to the excellent membrane-forming ability and chemical inertness of all-carbon backbones. Here, we attached alkalistable N-cyclic cations, dimethyl piperidinium (DMP), or 6-azonia-spiro [5.5] undecane (ASU), onto soluble polyolefin backbones to produce highly alkali-stable AEMs. The synthetic procedure included Ziegler-Natta polymerization, azidation, and Cu(I)-mediated azide-alkyne cycloaddition reaction. The as-prepared PBFB-DMP or PBFB-ASU copolymers were blended with poly (2,2 ′ -(1,4-naphthalene)-5,5 ′ -bibenzimidazole) (NPBI) polymer to achieve mechanical robust and flexible membranes. Polyolefin-based AEMs and their blend AEMs containing DMP or ASU cations showed superior alkali-resistance with over 91.9% of initial conductivities remaining and no obvious chemical degradation after 95 days (2280 h) of immersion in 1 M NaOH alkaline solution at 80 • C as proved by NMR spectroscopy. The blend AEM bearing DMP cations (B-PBFB-DMP) with an ion exchange capacity of 1.54 mmol g -1 displayed a higher hydroxide conductivity of 65.1 mS cm -1 at 80 • C than the analogue with ASU cations.
Who reads Highly alkali-stable polyolefin-based anion exchange membrane enabled by N-cyclic quaternary ammoniums for alkaline fuel cells?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Lei Liu; Yunkang Deng; Wanli Zhang; Jingjing Zhang; Wanzhen Ma; Lelong Li; Xiaojuan Zhang; Nanwen Li
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Engineering (Physical Sciences)