Enhanced Fuel Cell Performance with Robust Pyridinium-Derivative-Functionalized SBS Triblock Copolymer Anion-Exchange Membranes
以堅固之吡啶衍生物功能化 SBS 三嵌段共聚物陰離子交換膜提升燃料電池性能
📄 英文摘要
A series of polystyrene-block-polybutadiene-block-polystyrene (SBS) membranes functionalized with pyridinium derivatives (SBS-QA+py) were synthesized through free-radical chlorination of the polybutadiene segments. The resulting SBS-QA+py anion-exchange membranes (AEMs) exhibited controlled ion-exchange capacities (IECs), water uptake (WU), and optimized interionic separation, achieving a balance between hydration, dimensional stability, and mechanical integrity. Notably, the SBS-Qdpy2 AEM achieved a peak ionic conductivity of 101.23 mS cm⁻¹ at 80 °C and a peak power density of 398.14 mW cm⁻² in a H₂/O₂ flow single cell at 80 °C, surpassing previously reported SBS-based AEMs. The membranes also demonstrated excellent chemical durability in 1 M NaOH solutions over 30 days.
📄 中文摘要
本研究透過自由基氯化法(以 AIBN 為引發劑)對聚丁二烯段進行功能化,成功合成了一系列含吡啶衍生物之 SBS 陰離子交換膜( SBS-QA+py AEMs)。此類膜展現了受控的離子交換容量(IEC)、吸水率(WU)與優化的離子間距,在水合度、尺寸穩定性與機械完整性之間達到良好平衡。SBS-Qdpy2 AEM 在 80 °C 下達到 101.23 mS cm⁻¹ 的峰值離子傳導率,並在 80 °C 的 H₂/O₂ 流動單電池中達到 398.14 mW cm⁻² 的峰值功率密度,超越所有已報導的 SBS 基 AEMs。此外,膜在 1 M NaOH 溶液中浸泡 30 天仍展現出色的化學耐久性。
🔬 五項核心重要發現
📊 關鍵圖表