A series of nanocomposites based on quaternized polyvinyl alcohol (PVA) and nanocellulose (NC) from oil palm empty fruit bunch have been used as anion exchange membranes (AEM) for direct alcohol-hydrogen peroxide fuel cell (DAHPFC) applications. The PVA and NC are individually quaternized with hexadecyltrimethyl ammonium bromide (HDT) and glycidyltrimethyl ammonium chloride (GAC), cross-linked, and cast to form quaternized polyvinyl alcohol/quaternized nanocellulose (QPVA/QNC) membranes following thermal treatment. We observe that an increase of QNC quaternization degree increases quaternary ammonium content and the dimensional stability of the QPVA/QNC membranes while inhibiting PVA matrix crystallinity, decreasing both HDT dispersal and membrane thermal stability. We determine that QPVA/QNC_GAC30% membranes exhibit a maximum ion conductivity of 9.85 ± 0.07 mS/cm at room temperature and 29.07 ± 1.76 mS/cm at 80 °C with an ion exchange capacity of approximately 1.14 meq/g. Addition of QNC also enhances the alkaline stability of the optimized QPVA/QNC membrane with less ion conductivity loss. Optimized QPVA/QNC membranes have been demonstrated as an AEM in DAHPFCs without the use of platinum based catalysts. Compared with other membranes, we believe this nanocomposite membrane with comparable performances can promise AEM application in DAHPFCs.

一系列基于季铵化聚乙烯醇（PVA）和来自油棕空果串的纳米纤维素（NC）的纳米复合材料已被用作直接醇-过氧化氢燃料电池（DAHPFC）应用的阴离子交换膜（AEM）。PVA 和 NC 分别用十六烷基三甲基溴化铵 (HDT) 和缩水甘油基三甲基氯化铵 (GAC) 季铵化、交联，并在热处理后浇铸形成季铵化聚乙烯醇/季铵化纳米纤维素 (QPVA/QNC) 膜。我们观察到，QNC 季铵化程度的增加会增加季铵含量和 QPVA/QNC 膜的尺寸稳定性，同时抑制 PVA 基质结晶度，降低 HDT 分散性和膜热稳定性。我们确定 QPVA/QNC _GAC30%膜在室温下的最大离子电导率为 9.85 ± 0.07 mS/cm，在 80 °C 时为 29.07 ± 1.76 mS/cm，离子交换容量约为 1.14 meq/g。添加 QNC 还可以增强优化的 QPVA/QNC 膜的碱性稳定性，同时减少离子电导率损失。优化的 QPVA/QNC 膜已被证明可以作为 DAHPFC 中的 AEM，无需使用铂基催化剂。与其他膜相比，我们相信这种性能相当的纳米复合膜有望在 DAHPFC 中实现 AEM 应用。